Frederick Police Brks Weather Records (USC00183348)
Record envelope, standing records and threshold days for Frederick Police Brks (USC00183348), Maryland, United States, with 109 years of record.
Key Facts for Frederick Police Brks
- Frederick Police Brks (USC00183348) is a weather station in Maryland, United States at 39.42 latitude and -77.44 longitude, 116 m (380 ft) above sea level.
- The station reports from 1894 to 2002, 109 years of record.
- 1,464 records set at Frederick Police Brks still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Frederick Police Brks set a daily record precipitation of 39.4 mm (1.6 in) on 14 June 2002.
About the Station
- Location: Maryland, United States, 39.42 latitude, -77.44 longitude.
- Elevation: 116 m (380 ft).
- Period of record: 1894 to 2002, 109 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 24.4 C (75.9 F) | -29.4 C (-20.9 F) | n/a | n/a |
| Feb | 26.7 C (80.1 F) | -24.4 C (-11.9 F) | n/a | n/a |
| Mar | 32.2 C (90.0 F) | -17.8 C (0.0 F) | n/a | n/a |
| Apr | 36.7 C (98.1 F) | -10.6 C (12.9 F) | n/a | n/a |
| May | 37.8 C (100.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Jun | 40.0 C (104.0 F) | 3.3 C (37.9 F) | n/a | n/a |
| Jul | 42.8 C (109.0 F) | 5.6 C (42.1 F) | n/a | n/a |
| Aug | 41.7 C (107.1 F) | 3.9 C (39.0 F) | n/a | n/a |
| Sep | 38.9 C (102.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Oct | 37.2 C (99.0 F) | -5.6 C (21.9 F) | n/a | n/a |
| Nov | 28.9 C (84.0 F) | -15.6 C (3.9 F) | n/a | n/a |
| Dec | 25.0 C (77.0 F) | -28.3 C (-18.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1894 | 6 |
| 1895 | 31 |
| 1896 | 31 |
| 1897 | 13 |
| 1898 | 14 |
| 1899 | 17 |
| 1900 | 35 |
| 1901 | 13 |
| 1902 | 10 |
| 1903 | 14 |
| 1904 | 20 |
| 1905 | 13 |
| 1906 | 10 |
| 1907 | 18 |
| 1908 | 10 |
| 1909 | 13 |
| 1910 | 13 |
| 1911 | 9 |
| 1912 | 20 |
| 1913 | 20 |
| 1914 | 31 |
| 1915 | 11 |
| 1916 | 8 |
| 1917 | 23 |
| 1918 | 25 |
| 1919 | 16 |
| 1920 | 8 |
| 1921 | 14 |
| 1922 | 10 |
| 1923 | 11 |
| 1924 | 5 |
| 1925 | 22 |
| 1926 | 20 |
| 1927 | 14 |
| 1928 | 18 |
| 1929 | 23 |
| 1930 | 55 |
| 1931 | 20 |
| 1932 | 24 |
| 1933 | 14 |
| 1934 | 18 |
| 1935 | 12 |
| 1936 | 21 |
| 1937 | 4 |
| 1938 | 19 |
| 1939 | 15 |
| 1940 | 23 |
| 1941 | 17 |
| 1942 | 15 |
| 1943 | 24 |
| 1944 | 17 |
| 1945 | 18 |
| 1946 | 20 |
| 1947 | 25 |
| 1948 | 19 |
| 1949 | 11 |
| 1950 | 12 |
| 1951 | 13 |
| 1952 | 10 |
| 1953 | 12 |
| 1954 | 13 |
| 1955 | 7 |
| 1956 | 14 |
| 1957 | 8 |
| 1958 | 7 |
| 1959 | 10 |
| 1960 | 14 |
| 1961 | 13 |
| 1962 | 2 |
| 1973 | 9 |
| 1974 | 16 |
| 1975 | 13 |
| 1976 | 10 |
| 1977 | 11 |
| 1978 | 11 |
| 1979 | 10 |
| 1980 | 8 |
| 1981 | 8 |
| 1982 | 11 |
| 1983 | 13 |
| 1984 | 15 |
| 1985 | 10 |
| 1986 | 14 |
| 1987 | 9 |
| 1988 | 15 |
| 1989 | 12 |
| 1990 | 19 |
| 1991 | 27 |
| 1992 | 9 |
| 1993 | 11 |
| 1994 | 5 |
| 1995 | 10 |
| 1996 | 12 |
| 1997 | 15 |
| 1998 | 21 |
| 1999 | 2 |
| 2000 | 5 |
| 2001 | 11 |
| 2002 | 7 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1926-07-21 | Record high maximum temperature | Record high maximum temperature 41.7 C (107.1 F) |
| 1930-07-21 | Record high maximum temperature | Record high maximum temperature 42.2 C (108.0 F) |
| 1936-07-10 | Record high maximum temperature | Record high maximum temperature 42.8 C (109.0 F) |
| 1983-02-11 | Record daily snowfall | Record daily snowfall 58.4 cm (23.0 in) |
| 1996-01-12 | Record snow depth | Record snow depth 94.0 cm (37.0 in) |
Wettest Day of Each Month
Sep: 108.2 mm (4.3 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 64.5 mm (2.5 in) | 12 January 1915 |
| Feb | 63.5 mm (2.5 in) | 6 February 1896 |
| Mar | 50.8 mm (2.0 in) | 15 March 1993 |
| Apr | 69.9 mm (2.8 in) | 15 April 1906 |
| May | 88.9 mm (3.5 in) | 20 May 1908 |
| Jun | 107.2 mm (4.2 in) | 15 June 1916 |
| Jul | 81.3 mm (3.2 in) | 8 July 1955 |
| Aug | 106.4 mm (4.2 in) | 16 August 1903 |
| Sep | 108.2 mm (4.3 in) | 6 September 1895 |
| Oct | 103.4 mm (4.1 in) | 9 October 1976 |
| Nov | 91.7 mm (3.6 in) | 16 November 1926 |
| Dec | 63.0 mm (2.5 in) | 26 December 1973 |
Period of Record Coverage
1894 to 2002| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1894 | 176 | 48% | No |
| 1895 | 349 | 96% | Yes |
| 1896 | 352 | 96% | Yes |
| 1897 | 343 | 94% | Yes |
| 1898 | 357 | 98% | Yes |
| 1899 | 360 | 99% | Yes |
| 1900 | 358 | 98% | Yes |
| 1901 | 354 | 97% | Yes |
| 1902 | 365 | 100% | Yes |
| 1903 | 365 | 100% | Yes |
| 1904 | 365 | 100% | Yes |
| 1905 | 363 | 99% | Yes |
| 1906 | 362 | 99% | Yes |
| 1907 | 358 | 98% | Yes |
| 1908 | 365 | 100% | Yes |
| 1909 | 363 | 99% | Yes |
| 1910 | 362 | 99% | Yes |
| 1911 | 361 | 99% | Yes |
| 1912 | 365 | 100% | Yes |
| 1913 | 365 | 100% | Yes |
| 1914 | 364 | 100% | Yes |
| 1915 | 365 | 100% | Yes |
| 1916 | 365 | 100% | Yes |
| 1917 | 364 | 100% | Yes |
| 1918 | 365 | 100% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 362 | 99% | Yes |
| 1923 | 363 | 99% | Yes |
| 1924 | 363 | 99% | Yes |
| 1925 | 360 | 99% | Yes |
| 1926 | 364 | 100% | Yes |
| 1927 | 351 | 96% | Yes |
| 1928 | 360 | 98% | Yes |
| 1929 | 363 | 99% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 363 | 99% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 363 | 99% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 365 | 100% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 363 | 99% | Yes |
| 1943 | 362 | 99% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 363 | 99% | Yes |
| 1946 | 363 | 99% | Yes |
| 1947 | 363 | 99% | Yes |
| 1948 | 363 | 99% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 356 | 98% | Yes |
| 1951 | 363 | 99% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 364 | 100% | Yes |
| 1954 | 324 | 89% | No |
| 1955 | 356 | 98% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 363 | 99% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 365 | 100% | Yes |
| 1961 | 363 | 99% | Yes |
| 1962 | 59 | 16% | No |
| 1973 | 275 | 75% | No |
| 1974 | 362 | 99% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 362 | 99% | Yes |
| 1980 | 363 | 99% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 303 | 83% | No |
| 1983 | 352 | 96% | Yes |
| 1984 | 362 | 99% | Yes |
| 1985 | 362 | 99% | Yes |
| 1986 | 329 | 90% | Yes |
| 1987 | 358 | 98% | Yes |
| 1988 | 336 | 92% | Yes |
| 1989 | 357 | 98% | Yes |
| 1990 | 360 | 99% | Yes |
| 1991 | 334 | 92% | Yes |
| 1992 | 356 | 97% | Yes |
| 1993 | 355 | 97% | Yes |
| 1994 | 360 | 99% | Yes |
| 1995 | 354 | 97% | Yes |
| 1996 | 325 | 89% | No |
| 1997 | 352 | 96% | Yes |
| 1998 | 360 | 99% | Yes |
| 1999 | 355 | 97% | Yes |
| 2000 | 354 | 97% | Yes |
| 2001 | 359 | 98% | Yes |
| 2002 | 177 | 48% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 14 June 2002 | Frederick Police Brks, US | daily rain | 39.4 mm (1.6 in) | 7.9 mm (0.31 in) | 75 years | 38 of 100 (Notable) |
| 21 April 2002 | Frederick Police Brks, US | daily high max | 32.2 C (90.0 F) | 0.5 C (0.9 F) | 25 years | 17 of 100 (Routine) |
| 20 April 2002 | Frederick Police Brks, US | daily high min | 20.0 C (68.0 F) | 3.3 C (5.9 F) | 105 years | 46 of 100 (Notable) |
| 18 April 2002 | Frederick Police Brks, US | monthly high min | 21.7 C (71.1 F) | 1.1 C (2.0 F) | 45 years | 35 of 100 (Notable) |
| 18 April 2002 | Frederick Police Brks, US | daily high max (Tie) | 33.9 C (93.0 F) | tie | 25 years | 4 of 100 (Routine) |
| 17 April 2002 | Frederick Police Brks, US | daily high max (Tie) | 33.3 C (91.9 F) | tie | 105 years | 10 of 100 (Routine) |
| 17 April 2002 | Frederick Police Brks, US | daily high min (Tie) | 15.6 C (60.1 F) | tie | 80 years | 8 of 100 (Routine) |
| 16 April 2002 | Frederick Police Brks, US | daily high min (Tie) | 16.1 C (61.0 F) | tie | 60 years | 7 of 100 (Routine) |
| 16 April 2002 | Frederick Police Brks, US | daily high max (Tie) | 31.7 C (89.1 F) | tie | 25 years | 4 of 100 (Routine) |
| 15 April 2002 | Frederick Police Brks, US | daily high min | 16.1 C (61.0 F) | 0.5 C (0.9 F) | 80 years | 35 of 100 (Notable) |
| 21 February 2002 | Frederick Police Brks, US | daily high min | 10.6 C (51.1 F) | 1.2 C (2.2 F) | 48 years | 26 of 100 (Routine) |
| 30 January 2002 | Frederick Police Brks, US | daily high min | 13.3 C (55.9 F) | 6.6 C (11.9 F) | 12 years | 24 of 100 (Routine) |
| 30 January 2002 | Frederick Police Brks, US | daily high max (Tie) | 21.7 C (71.1 F) | tie | 55 years | 6 of 100 (Routine) |
| 29 January 2002 | Frederick Police Brks, US | daily high max | 21.7 C (71.1 F) | 4.5 C (8.1 F) | 27 years | 25 of 100 (Routine) |
| 14 December 2001 | Frederick Police Brks, US | daily high min | 9.4 C (48.9 F) | 0.5 C (0.9 F) | 10 years | 13 of 100 (Routine) |
| 5 December 2001 | Frederick Police Brks, US | daily high max | 23.9 C (75.0 F) | 0.6 C (1.1 F) | 19 years | 16 of 100 (Routine) |
| 2 December 2001 | Frederick Police Brks, US | daily high max | 20.6 C (69.1 F) | 2.3 C (4.1 F) | 3 years | 14 of 100 (Routine) |
| 1 December 2001 | Frederick Police Brks, US | daily high max | 20.6 C (69.1 F) | 1.2 C (2.2 F) | 20 years | 18 of 100 (Routine) |
| 3 November 2001 | Frederick Police Brks, US | daily high min | 16.7 C (62.1 F) | 0.6 C (1.1 F) | 72 years | 32 of 100 (Routine) |
| 26 October 2001 | Frederick Police Brks, US | daily high max | 27.8 C (82.0 F) | 1.7 C (3.1 F) | 80 years | 37 of 100 (Notable) |
Climate Trend
88 complete years, 1895 to 2001| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1895 | 11.4 C | -1.36 C |
| 1896 | 12.4 C | -0.32 C |
| 1897 | 12.1 C | -0.71 C |
| 1898 | 12.9 C | +0.17 C |
| 1899 | 12.1 C | -0.68 C |
| 1900 | 13.4 C | +0.68 C |
| 1901 | 12.4 C | -0.36 C |
| 1902 | 12.7 C | -0.04 C |
| 1903 | 12.3 C | -0.49 C |
| 1904 | 10.9 C | -1.82 C |
| 1905 | 12.1 C | -0.64 C |
| 1906 | 12.8 C | +0.01 C |
| 1907 | 11.2 C | -1.56 C |
| 1908 | 12.4 C | -0.37 C |
| 1909 | 12.3 C | -0.51 C |
| 1910 | 12.3 C | -0.44 C |
| 1911 | 12.8 C | +0.03 C |
| 1912 | 11.8 C | -0.99 C |
| 1913 | 13.4 C | +0.67 C |
| 1914 | 11.9 C | -0.83 C |
| 1915 | 12.2 C | -0.53 C |
| 1916 | 11.9 C | -0.91 C |
| 1917 | 11.2 C | -1.59 C |
| 1918 | 12.6 C | -0.21 C |
| 1919 | 13.0 C | +0.20 C |
| 1920 | 12.0 C | -0.75 C |
| 1921 | 14.2 C | +1.40 C |
| 1922 | 13.2 C | +0.43 C |
| 1923 | 12.9 C | +0.09 C |
| 1924 | 11.9 C | -0.85 C |
| 1925 | 12.9 C | +0.15 C |
| 1926 | 12.2 C | -0.59 C |
| 1927 | 12.9 C | +0.16 C |
| 1928 | 12.7 C | -0.08 C |
| 1929 | 12.8 C | +0.08 C |
| 1930 | 13.5 C | +0.78 C |
| 1931 | 14.1 C | +1.35 C |
| 1932 | 13.5 C | +0.78 C |
| 1933 | 13.5 C | +0.69 C |
| 1934 | 12.8 C | +0.06 C |
| 1935 | 12.5 C | -0.30 C |
| 1936 | 12.5 C | -0.31 C |
| 1937 | 12.6 C | -0.14 C |
| 1938 | 13.2 C | +0.44 C |
| 1939 | 13.2 C | +0.45 C |
| 1940 | 11.5 C | -1.23 C |
| 1941 | 12.7 C | -0.03 C |
| 1942 | 12.2 C | -0.61 C |
| 1943 | 12.0 C | -0.80 C |
| 1944 | 11.9 C | -0.86 C |
| 1945 | 12.0 C | -0.74 C |
| 1946 | 12.6 C | -0.21 C |
| 1947 | 12.0 C | -0.79 C |
| 1948 | 12.2 C | -0.58 C |
| 1949 | 13.3 C | +0.57 C |
| 1950 | 12.5 C | -0.22 C |
| 1952 | 12.7 C | -0.04 C |
| 1953 | 13.6 C | +0.81 C |
| 1955 | 12.9 C | +0.14 C |
| 1956 | 12.6 C | -0.16 C |
| 1957 | 13.0 C | +0.26 C |
| 1958 | 11.7 C | -1.09 C |
| 1959 | 13.4 C | +0.67 C |
| 1960 | 12.0 C | -0.77 C |
| 1961 | 12.4 C | -0.35 C |
| 1974 | 13.4 C | +0.66 C |
| 1975 | 13.5 C | +0.69 C |
| 1976 | 12.7 C | -0.11 C |
| 1977 | 13.3 C | +0.56 C |
| 1978 | 12.4 C | -0.39 C |
| 1979 | 12.7 C | -0.03 C |
| 1980 | 13.1 C | +0.34 C |
| 1981 | 12.9 C | +0.14 C |
| 1983 | 13.2 C | +0.44 C |
| 1984 | 13.3 C | +0.51 C |
| 1985 | 13.6 C | +0.87 C |
| 1987 | 13.8 C | +1.06 C |
| 1988 | 13.6 C | +0.81 C |
| 1989 | 13.1 C | +0.38 C |
| 1990 | 14.9 C | +2.11 C |
| 1992 | 13.0 C | +0.20 C |
| 1994 | 13.5 C | +0.71 C |
| 1995 | 13.3 C | +0.54 C |
| 1997 | 13.6 C | +0.82 C |
| 1998 | 14.8 C | +1.99 C |
| 1999 | 13.9 C | +1.11 C |
| 2000 | 13.1 C | +0.29 C |
| 2001 | 13.7 C | +0.90 C |
The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1895 to 2001. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 88 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.1 C (0.1 to 0.2) per decade | 0.2 F (0.1 to 0.3) per decade | 1895 to 2001 | 88 | Rise |
| Mean daily maximum | 0.1 C (0.1 to 0.2) per decade | 0.2 F (0.1 to 0.3) per decade | 1895 to 2001 | 88 | Rise |
| Mean daily minimum | 0.1 C (0.1 to 0.2) per decade | 0.2 F (0.1 to 0.3) per decade | 1895 to 2001 | 88 | Rise |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1894 to 2002| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.8 C (109.0 F) | 1936 | 37.2 C (99.0 F) | 99 |
| Coldest night (TNn) | -29.4 C (-20.9 F) | 1912 | -16.1 C (3.0 F) | 99 |
| Wettest day (Rx1day) | 108.2 mm (4.3 in) | 1895 | 54.1 mm (2.1 in) | 99 |
| Wettest five days (Rx5day) | 179.4 mm (7.1 in) | 1933 | 86.3 mm (3.4 in) | 99 |
| Longest dry spell (CDD) | 38 days | 2001 | 18 days | 99 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1894 | 36.7 C (98.1 F) |
| 1895 | 36.1 C (97.0 F) |
| 1896 | 37.2 C (99.0 F) |
| 1897 | 35.0 C (95.0 F) |
| 1898 | 40.0 C (104.0 F) |
| 1899 | 36.1 C (97.0 F) |
| 1900 | 38.3 C (100.9 F) |
| 1901 | 38.3 C (100.9 F) |
| 1902 | 38.9 C (102.0 F) |
| 1903 | 36.7 C (98.1 F) |
| 1904 | 34.4 C (93.9 F) |
| 1905 | 35.0 C (95.0 F) |
| 1906 | 35.6 C (96.1 F) |
| 1907 | 33.3 C (91.9 F) |
| 1908 | 37.8 C (100.0 F) |
| 1909 | 36.1 C (97.0 F) |
| 1910 | 36.1 C (97.0 F) |
| 1911 | 37.8 C (100.0 F) |
| 1912 | 36.7 C (98.1 F) |
| 1913 | 38.9 C (102.0 F) |
| 1914 | 37.8 C (100.0 F) |
| 1915 | 36.7 C (98.1 F) |
| 1916 | 37.2 C (99.0 F) |
| 1917 | 38.3 C (100.9 F) |
| 1918 | 40.0 C (104.0 F) |
| 1919 | 38.9 C (102.0 F) |
| 1920 | 36.7 C (98.1 F) |
| 1921 | 38.3 C (100.9 F) |
| 1922 | 36.7 C (98.1 F) |
| 1923 | 37.8 C (100.0 F) |
| 1924 | 38.3 C (100.9 F) |
| 1925 | 40.0 C (104.0 F) |
| 1926 | 41.7 C (107.1 F) |
| 1927 | 37.8 C (100.0 F) |
| 1928 | 36.1 C (97.0 F) |
| 1929 | 37.8 C (100.0 F) |
| 1930 | 42.2 C (108.0 F) |
| 1931 | 38.9 C (102.0 F) |
| 1932 | 39.4 C (102.9 F) |
| 1933 | 38.3 C (100.9 F) |
| 1934 | 40.0 C (104.0 F) |
| 1935 | 38.3 C (100.9 F) |
| 1936 | 42.8 C (109.0 F) |
| 1937 | 36.7 C (98.1 F) |
| 1938 | 36.7 C (98.1 F) |
| 1939 | 37.2 C (99.0 F) |
| 1940 | 38.3 C (100.9 F) |
| 1941 | 37.8 C (100.0 F) |
| 1942 | 36.1 C (97.0 F) |
| 1943 | 37.8 C (100.0 F) |
| 1944 | 37.8 C (100.0 F) |
| 1945 | 36.7 C (98.1 F) |
| 1946 | 36.7 C (98.1 F) |
| 1947 | 36.1 C (97.0 F) |
| 1948 | 39.4 C (102.9 F) |
| 1949 | 37.8 C (100.0 F) |
| 1950 | 35.0 C (95.0 F) |
| 1951 | 35.6 C (96.1 F) |
| 1952 | 38.3 C (100.9 F) |
| 1953 | 38.3 C (100.9 F) |
| 1954 | 38.9 C (102.0 F) |
| 1955 | 37.8 C (100.0 F) |
| 1956 | 35.6 C (96.1 F) |
| 1957 | 40.6 C (105.1 F) |
| 1958 | 34.4 C (93.9 F) |
| 1959 | 37.8 C (100.0 F) |
| 1960 | 33.9 C (93.0 F) |
| 1961 | 35.0 C (95.0 F) |
| 1962 | 16.7 C (62.1 F) |
| 1973 | 35.6 C (96.1 F) |
| 1974 | 34.4 C (93.9 F) |
| 1975 | 35.6 C (96.1 F) |
| 1976 | 33.9 C (93.0 F) |
| 1977 | 37.8 C (100.0 F) |
| 1978 | 35.6 C (96.1 F) |
| 1979 | 34.4 C (93.9 F) |
| 1980 | 38.3 C (100.9 F) |
| 1981 | 35.0 C (95.0 F) |
| 1982 | 32.8 C (91.0 F) |
| 1983 | 40.0 C (104.0 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 35.0 C (95.0 F) |
| 1986 | 37.2 C (99.0 F) |
| 1987 | 37.2 C (99.0 F) |
| 1988 | 40.0 C (104.0 F) |
| 1989 | 36.1 C (97.0 F) |
| 1990 | 38.9 C (102.0 F) |
| 1991 | 38.9 C (102.0 F) |
| 1992 | 37.2 C (99.0 F) |
| 1993 | 37.8 C (100.0 F) |
| 1994 | 37.2 C (99.0 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 36.1 C (97.0 F) |
| 1997 | 41.1 C (106.0 F) |
| 1998 | 35.6 C (96.1 F) |
| 1999 | 37.2 C (99.0 F) |
| 2000 | 33.9 C (93.0 F) |
| 2001 | 36.1 C (97.0 F) |
| 2002 | 34.4 C (93.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1894 | -15.0 C (5.0 F) |
| 1895 | -20.0 C (-4.0 F) |
| 1896 | -20.6 C (-5.1 F) |
| 1897 | -15.0 C (5.0 F) |
| 1898 | -16.1 C (3.0 F) |
| 1899 | -23.3 C (-9.9 F) |
| 1900 | -16.1 C (3.0 F) |
| 1901 | -15.6 C (3.9 F) |
| 1902 | -17.8 C (0.0 F) |
| 1903 | -24.4 C (-11.9 F) |
| 1904 | -24.4 C (-11.9 F) |
| 1905 | -22.8 C (-9.0 F) |
| 1906 | -14.4 C (6.1 F) |
| 1907 | -22.2 C (-8.0 F) |
| 1908 | -18.9 C (-2.0 F) |
| 1909 | -14.4 C (6.1 F) |
| 1910 | -18.3 C (-0.9 F) |
| 1911 | -13.3 C (8.1 F) |
| 1912 | -29.4 C (-20.9 F) |
| 1913 | -12.2 C (10.0 F) |
| 1914 | -22.2 C (-8.0 F) |
| 1915 | -10.0 C (14.0 F) |
| 1916 | -19.4 C (-2.9 F) |
| 1917 | -24.4 C (-11.9 F) |
| 1918 | -21.1 C (-6.0 F) |
| 1919 | -15.6 C (3.9 F) |
| 1920 | -13.9 C (7.0 F) |
| 1921 | -13.9 C (7.0 F) |
| 1922 | -16.1 C (3.0 F) |
| 1923 | -12.8 C (9.0 F) |
| 1924 | -14.4 C (6.1 F) |
| 1925 | -21.7 C (-7.1 F) |
| 1926 | -15.0 C (5.0 F) |
| 1927 | -13.9 C (7.0 F) |
| 1928 | -14.4 C (6.1 F) |
| 1929 | -13.9 C (7.0 F) |
| 1930 | -21.1 C (-6.0 F) |
| 1931 | -8.9 C (16.0 F) |
| 1932 | -16.7 C (1.9 F) |
| 1933 | -16.7 C (1.9 F) |
| 1934 | -24.4 C (-11.9 F) |
| 1935 | -27.8 C (-18.0 F) |
| 1936 | -22.8 C (-9.0 F) |
| 1937 | -11.1 C (12.0 F) |
| 1938 | -15.6 C (3.9 F) |
| 1939 | -17.8 C (0.0 F) |
| 1940 | -17.8 C (0.0 F) |
| 1941 | -11.7 C (10.9 F) |
| 1942 | -28.3 C (-18.9 F) |
| 1943 | -17.2 C (1.0 F) |
| 1944 | -18.9 C (-2.0 F) |
| 1945 | -19.4 C (-2.9 F) |
| 1946 | -15.6 C (3.9 F) |
| 1947 | -15.0 C (5.0 F) |
| 1948 | -22.2 C (-8.0 F) |
| 1949 | -12.8 C (9.0 F) |
| 1950 | -15.6 C (3.9 F) |
| 1951 | -15.0 C (5.0 F) |
| 1952 | -12.2 C (10.0 F) |
| 1953 | -10.0 C (14.0 F) |
| 1954 | -15.6 C (3.9 F) |
| 1955 | -16.7 C (1.9 F) |
| 1956 | -13.3 C (8.1 F) |
| 1957 | -22.2 C (-8.0 F) |
| 1958 | -17.8 C (0.0 F) |
| 1959 | -16.7 C (1.9 F) |
| 1960 | -20.6 C (-5.1 F) |
| 1961 | -20.0 C (-4.0 F) |
| 1962 | -18.9 C (-2.0 F) |
| 1973 | -11.1 C (12.0 F) |
| 1974 | -11.7 C (10.9 F) |
| 1975 | -15.0 C (5.0 F) |
| 1976 | -13.3 C (8.1 F) |
| 1977 | -20.6 C (-5.1 F) |
| 1978 | -15.6 C (3.9 F) |
| 1979 | -17.8 C (0.0 F) |
| 1980 | -16.1 C (3.0 F) |
| 1981 | -15.6 C (3.9 F) |
| 1982 | -22.2 C (-8.0 F) |
| 1983 | -22.2 C (-8.0 F) |
| 1984 | -23.3 C (-9.9 F) |
| 1985 | -22.8 C (-9.0 F) |
| 1986 | -13.9 C (7.0 F) |
| 1987 | -18.9 C (-2.0 F) |
| 1988 | -14.4 C (6.1 F) |
| 1989 | -16.7 C (1.9 F) |
| 1990 | -12.2 C (10.0 F) |
| 1991 | -11.7 C (10.9 F) |
| 1992 | -12.2 C (10.0 F) |
| 1993 | -13.3 C (8.1 F) |
| 1994 | -22.2 C (-8.0 F) |
| 1995 | -15.6 C (3.9 F) |
| 1996 | -16.7 C (1.9 F) |
| 1997 | -15.6 C (3.9 F) |
| 1998 | -10.0 C (14.0 F) |
| 1999 | -13.3 C (8.1 F) |
| 2000 | -12.8 C (9.0 F) |
| 2001 | -12.2 C (10.0 F) |
| 2002 | -10.0 C (14.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1894 | 61.0 mm (2.4 in) |
| 1895 | 108.2 mm (4.3 in) |
| 1896 | 63.5 mm (2.5 in) |
| 1897 | 64.0 mm (2.5 in) |
| 1898 | 52.3 mm (2.1 in) |
| 1899 | 41.4 mm (1.6 in) |
| 1900 | 41.7 mm (1.6 in) |
| 1901 | 73.7 mm (2.9 in) |
| 1902 | 51.8 mm (2.0 in) |
| 1903 | 106.4 mm (4.2 in) |
| 1904 | 59.7 mm (2.4 in) |
| 1905 | 44.2 mm (1.7 in) |
| 1906 | 69.9 mm (2.8 in) |
| 1907 | 54.1 mm (2.1 in) |
| 1908 | 88.9 mm (3.5 in) |
| 1909 | 59.9 mm (2.4 in) |
| 1910 | 53.3 mm (2.1 in) |
| 1911 | 71.6 mm (2.8 in) |
| 1912 | 95.5 mm (3.8 in) |
| 1913 | 41.9 mm (1.6 in) |
| 1914 | 42.7 mm (1.7 in) |
| 1915 | 106.9 mm (4.2 in) |
| 1916 | 107.2 mm (4.2 in) |
| 1917 | 49.8 mm (2.0 in) |
| 1918 | 50.5 mm (2.0 in) |
| 1919 | 49.0 mm (1.9 in) |
| 1920 | 53.3 mm (2.1 in) |
| 1921 | 68.1 mm (2.7 in) |
| 1922 | 62.5 mm (2.5 in) |
| 1923 | 35.1 mm (1.4 in) |
| 1924 | 85.1 mm (3.4 in) |
| 1925 | 34.0 mm (1.3 in) |
| 1926 | 91.7 mm (3.6 in) |
| 1927 | 51.8 mm (2.0 in) |
| 1928 | 87.6 mm (3.4 in) |
| 1929 | 89.7 mm (3.5 in) |
| 1930 | 51.1 mm (2.0 in) |
| 1931 | 51.3 mm (2.0 in) |
| 1932 | 67.6 mm (2.7 in) |
| 1933 | 81.3 mm (3.2 in) |
| 1934 | 101.9 mm (4.0 in) |
| 1935 | 45.2 mm (1.8 in) |
| 1936 | 48.8 mm (1.9 in) |
| 1937 | 77.0 mm (3.0 in) |
| 1938 | 41.9 mm (1.6 in) |
| 1939 | 59.9 mm (2.4 in) |
| 1940 | 67.6 mm (2.7 in) |
| 1941 | 43.2 mm (1.7 in) |
| 1942 | 72.9 mm (2.9 in) |
| 1943 | 51.6 mm (2.0 in) |
| 1944 | 47.2 mm (1.9 in) |
| 1945 | 57.7 mm (2.3 in) |
| 1946 | 70.4 mm (2.8 in) |
| 1947 | 57.2 mm (2.3 in) |
| 1948 | 57.7 mm (2.3 in) |
| 1949 | 45.7 mm (1.8 in) |
| 1950 | 53.3 mm (2.1 in) |
| 1951 | 68.6 mm (2.7 in) |
| 1952 | 69.3 mm (2.7 in) |
| 1953 | 71.6 mm (2.8 in) |
| 1954 | 36.1 mm (1.4 in) |
| 1955 | 81.3 mm (3.2 in) |
| 1956 | 54.4 mm (2.1 in) |
| 1957 | 40.6 mm (1.6 in) |
| 1958 | 45.7 mm (1.8 in) |
| 1959 | 52.1 mm (2.1 in) |
| 1960 | 35.1 mm (1.4 in) |
| 1961 | 55.4 mm (2.2 in) |
| 1962 | 27.9 mm (1.1 in) |
| 1973 | 73.2 mm (2.9 in) |
| 1974 | 57.2 mm (2.3 in) |
| 1975 | 51.6 mm (2.0 in) |
| 1976 | 103.4 mm (4.1 in) |
| 1977 | 41.7 mm (1.6 in) |
| 1978 | 53.3 mm (2.1 in) |
| 1979 | 85.1 mm (3.4 in) |
| 1980 | 48.3 mm (1.9 in) |
| 1981 | 33.5 mm (1.3 in) |
| 1982 | 51.1 mm (2.0 in) |
| 1983 | 51.1 mm (2.0 in) |
| 1984 | 58.4 mm (2.3 in) |
| 1985 | 52.3 mm (2.1 in) |
| 1986 | 31.8 mm (1.3 in) |
| 1987 | 53.3 mm (2.1 in) |
| 1988 | 69.3 mm (2.7 in) |
| 1989 | 54.4 mm (2.1 in) |
| 1990 | 50.8 mm (2.0 in) |
| 1991 | 50.8 mm (2.0 in) |
| 1992 | 59.7 mm (2.4 in) |
| 1993 | 50.8 mm (2.0 in) |
| 1994 | 35.8 mm (1.4 in) |
| 1995 | 50.8 mm (2.0 in) |
| 1996 | 62.5 mm (2.5 in) |
| 1997 | 53.3 mm (2.1 in) |
| 1998 | 52.1 mm (2.1 in) |
| 1999 | 54.6 mm (2.1 in) |
| 2000 | 67.8 mm (2.7 in) |
| 2001 | 69.9 mm (2.8 in) |
| 2002 | 39.4 mm (1.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1894 | 50.3 mm (2.0 in) |
| 1895 | 97.4 mm (3.8 in) |
| 1896 | 84.5 mm (3.3 in) |
| 1897 | 82.1 mm (3.2 in) |
| 1898 | 95.2 mm (3.7 in) |
| 1899 | 59.7 mm (2.4 in) |
| 1900 | 61.5 mm (2.4 in) |
| 1901 | 117.9 mm (4.6 in) |
| 1902 | 76.7 mm (3.0 in) |
| 1903 | 118.6 mm (4.7 in) |
| 1904 | 96.8 mm (3.8 in) |
| 1905 | 63.1 mm (2.5 in) |
| 1906 | 69.9 mm (2.8 in) |
| 1907 | 68.1 mm (2.7 in) |
| 1908 | 99.1 mm (3.9 in) |
| 1909 | 68.2 mm (2.7 in) |
| 1910 | 65.3 mm (2.6 in) |
| 1911 | 133.6 mm (5.3 in) |
| 1912 | 138.0 mm (5.4 in) |
| 1913 | 68.9 mm (2.7 in) |
| 1914 | 77.8 mm (3.1 in) |
| 1915 | 118.4 mm (4.7 in) |
| 1916 | 162.6 mm (6.4 in) |
| 1917 | 91.6 mm (3.6 in) |
| 1918 | 98.7 mm (3.9 in) |
| 1919 | 92.7 mm (3.6 in) |
| 1920 | 75.8 mm (3.0 in) |
| 1921 | 82.5 mm (3.2 in) |
| 1922 | 104.7 mm (4.1 in) |
| 1923 | 60.7 mm (2.4 in) |
| 1924 | 115.4 mm (4.5 in) |
| 1925 | 58.9 mm (2.3 in) |
| 1926 | 119.1 mm (4.7 in) |
| 1927 | 85.9 mm (3.4 in) |
| 1928 | 122.6 mm (4.8 in) |
| 1929 | 116.8 mm (4.6 in) |
| 1930 | 66.9 mm (2.6 in) |
| 1931 | 96.0 mm (3.8 in) |
| 1932 | 110.8 mm (4.4 in) |
| 1933 | 179.4 mm (7.1 in) |
| 1934 | 167.7 mm (6.6 in) |
| 1935 | 126.4 mm (5.0 in) |
| 1936 | 68.6 mm (2.7 in) |
| 1937 | 138.7 mm (5.5 in) |
| 1938 | 65.0 mm (2.6 in) |
| 1939 | 86.3 mm (3.4 in) |
| 1940 | 95.3 mm (3.8 in) |
| 1941 | 82.6 mm (3.3 in) |
| 1942 | 137.4 mm (5.4 in) |
| 1943 | 77.5 mm (3.1 in) |
| 1944 | 76.1 mm (3.0 in) |
| 1945 | 125.0 mm (4.9 in) |
| 1946 | 93.1 mm (3.7 in) |
| 1947 | 77.2 mm (3.0 in) |
| 1948 | 89.4 mm (3.5 in) |
| 1949 | 65.8 mm (2.6 in) |
| 1950 | 92.2 mm (3.6 in) |
| 1951 | 122.7 mm (4.8 in) |
| 1952 | 145.2 mm (5.7 in) |
| 1953 | 77.7 mm (3.1 in) |
| 1954 | 56.5 mm (2.2 in) |
| 1955 | 113.0 mm (4.4 in) |
| 1956 | 151.3 mm (6.0 in) |
| 1957 | 62.2 mm (2.4 in) |
| 1958 | 69.6 mm (2.7 in) |
| 1959 | 86.9 mm (3.4 in) |
| 1960 | 68.8 mm (2.7 in) |
| 1961 | 82.0 mm (3.2 in) |
| 1962 | 58.4 mm (2.3 in) |
| 1973 | 79.6 mm (3.1 in) |
| 1974 | 85.9 mm (3.4 in) |
| 1975 | 167.8 mm (6.6 in) |
| 1976 | 126.0 mm (5.0 in) |
| 1977 | 85.2 mm (3.4 in) |
| 1978 | 111.4 mm (4.4 in) |
| 1979 | 120.9 mm (4.8 in) |
| 1980 | 68.3 mm (2.7 in) |
| 1981 | 77.2 mm (3.0 in) |
| 1982 | 76.1 mm (3.0 in) |
| 1983 | 92.4 mm (3.6 in) |
| 1984 | 84.6 mm (3.3 in) |
| 1985 | 64.8 mm (2.6 in) |
| 1986 | 54.7 mm (2.2 in) |
| 1987 | 95.0 mm (3.7 in) |
| 1988 | 179.3 mm (7.1 in) |
| 1989 | 94.6 mm (3.7 in) |
| 1990 | 110.5 mm (4.4 in) |
| 1991 | 57.9 mm (2.3 in) |
| 1992 | 89.7 mm (3.5 in) |
| 1993 | 132.5 mm (5.2 in) |
| 1994 | 81.6 mm (3.2 in) |
| 1995 | 58.4 mm (2.3 in) |
| 1996 | 109.4 mm (4.3 in) |
| 1997 | 72.1 mm (2.8 in) |
| 1998 | 104.7 mm (4.1 in) |
| 1999 | 80.5 mm (3.2 in) |
| 2000 | 86.7 mm (3.4 in) |
| 2001 | 73.2 mm (2.9 in) |
| 2002 | 52.6 mm (2.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1894 | 11 days |
| 1895 | 14 days |
| 1896 | 9 days |
| 1897 | 21 days |
| 1898 | 13 days |
| 1899 | 15 days |
| 1900 | 19 days |
| 1901 | 29 days |
| 1902 | 18 days |
| 1903 | 20 days |
| 1904 | 20 days |
| 1905 | 14 days |
| 1906 | 17 days |
| 1907 | 18 days |
| 1908 | 22 days |
| 1909 | 17 days |
| 1910 | 30 days |
| 1911 | 12 days |
| 1912 | 12 days |
| 1913 | 17 days |
| 1914 | 18 days |
| 1915 | 23 days |
| 1916 | 13 days |
| 1917 | 21 days |
| 1918 | 16 days |
| 1919 | 14 days |
| 1920 | 26 days |
| 1921 | 15 days |
| 1922 | 24 days |
| 1923 | 25 days |
| 1924 | 26 days |
| 1925 | 15 days |
| 1926 | 15 days |
| 1927 | 14 days |
| 1928 | 14 days |
| 1929 | 17 days |
| 1930 | 37 days |
| 1931 | 19 days |
| 1932 | 19 days |
| 1933 | 12 days |
| 1934 | 17 days |
| 1935 | 17 days |
| 1936 | 14 days |
| 1937 | 16 days |
| 1938 | 14 days |
| 1939 | 18 days |
| 1940 | 14 days |
| 1941 | 28 days |
| 1942 | 18 days |
| 1943 | 18 days |
| 1944 | 19 days |
| 1945 | 21 days |
| 1946 | 16 days |
| 1947 | 20 days |
| 1948 | 9 days |
| 1949 | 18 days |
| 1950 | 16 days |
| 1951 | 21 days |
| 1952 | 29 days |
| 1953 | 35 days |
| 1954 | 17 days |
| 1955 | 27 days |
| 1956 | 15 days |
| 1957 | 27 days |
| 1958 | 24 days |
| 1959 | 17 days |
| 1960 | 20 days |
| 1961 | 17 days |
| 1962 | 6 days |
| 1973 | 26 days |
| 1974 | 19 days |
| 1975 | 14 days |
| 1976 | 23 days |
| 1977 | 25 days |
| 1978 | 16 days |
| 1979 | 16 days |
| 1980 | 12 days |
| 1981 | 17 days |
| 1982 | 15 days |
| 1983 | 15 days |
| 1984 | 14 days |
| 1985 | 23 days |
| 1986 | 24 days |
| 1987 | 14 days |
| 1988 | 21 days |
| 1989 | 16 days |
| 1990 | 20 days |
| 1991 | 22 days |
| 1992 | 17 days |
| 1993 | 13 days |
| 1994 | 19 days |
| 1995 | 35 days |
| 1996 | 11 days |
| 1997 | 15 days |
| 1998 | 29 days |
| 1999 | 22 days |
| 2000 | 21 days |
| 2001 | 38 days |
| 2002 | 19 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
88 years with a frostAcross 88 years with a frost, the median last spring frost at Frederick Police Brks falls on 15 April and the median first autumn frost on 20 October, which leaves a median of 187 days between them.
In 1955 to 2001 the median growing season was 199 days. That is 12 days more than in 1895 to 1924.
Fitted over all years, the growing season changes by +1.6 days per decade at this station.
| Measure | Median, all years | Earliest period (1895 to 1924) | Recent period (1955 to 2001) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 15 April | 13 April | 11 April | 2 days earlier | -0.7 days per decade |
| First autumn frost | 20 October | 22 October | 28 October | 6 days later | +0.9 days per decade |
| Growing days | 187 days | 187 days | 199 days | 12 days more | +1.6 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
90 years, 1898 to 2001A day with at least 56.2 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 123.3 mm (4.9 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 56.2 mm (2.2 in) | |
| 5 years | 72.1 mm (2.8 in) | |
| 10 years | 83.4 mm (3.3 in) | |
| 25 years | 98.7 mm (3.9 in) | |
| 50 years | 110.7 mm (4.4 in) | |
| 100 years | 123.3 mm (4.9 in) | Longer than the 90 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 90 years of values from 1898 to 2001.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 107.2 mm (4.2 in) in 1916; 106.9 mm (4.2 in) in 1915; 106.4 mm (4.2 in) in 1903.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).