Annapolis Police Brks Weather Records (USC00180193)
Record envelope, standing records and threshold days for Annapolis Police Brks (USC00180193), Maryland, United States, with 55 years of record.
Key Facts for Annapolis Police Brks
- Annapolis Police Brks (USC00180193) is a weather station in Maryland, United States at 38.99 latitude and -76.51 longitude, 8 m (25 ft) above sea level.
- The station reports from 1951 to 2005, 55 years of record.
- 1,464 records set at Annapolis Police Brks still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Annapolis Police Brks set a daily record high maximum temperature of 22.8 C (73.0 F) on 22 November 2005.
About the Station
- Location: Maryland, United States, 38.99 latitude, -76.51 longitude.
- Elevation: 8 m (25 ft).
- Period of record: 1951 to 2005, 55 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 | 23.9 C (75.0 F) | -22.2 C (-8.0 F) | n/a | n/a |
| Feb | 26.7 C (80.1 F) | -17.8 C (0.0 F) | n/a | n/a |
| Mar | 33.3 C (91.9 F) | -12.2 C (10.0 F) | n/a | n/a |
| Apr | 36.7 C (98.1 F) | -5.6 C (21.9 F) | n/a | n/a |
| May | 36.7 C (98.1 F) | 0.6 C (33.1 F) | n/a | n/a |
| Jun | 38.3 C (100.9 F) | 5.0 C (41.0 F) | n/a | n/a |
| Jul | 39.4 C (102.9 F) | 8.3 C (46.9 F) | n/a | n/a |
| Aug | 39.4 C (102.9 F) | 6.1 C (43.0 F) | n/a | n/a |
| Sep | 37.8 C (100.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Oct | 33.9 C (93.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Nov | 27.2 C (81.0 F) | -12.2 C (10.0 F) | n/a | n/a |
| Dec | 25.6 C (78.1 F) | -18.3 C (-0.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1951 | 33 |
| 1952 | 39 |
| 1953 | 31 |
| 1954 | 43 |
| 1955 | 20 |
| 1956 | 56 |
| 1957 | 24 |
| 1958 | 48 |
| 1959 | 40 |
| 1960 | 35 |
| 1961 | 32 |
| 1962 | 39 |
| 1963 | 10 |
| 1964 | 33 |
| 1965 | 28 |
| 1966 | 28 |
| 1967 | 45 |
| 1968 | 17 |
| 1969 | 10 |
| 1970 | 11 |
| 1976 | 12 |
| 1977 | 25 |
| 1978 | 19 |
| 1979 | 41 |
| 1980 | 19 |
| 1981 | 16 |
| 1982 | 21 |
| 1983 | 25 |
| 1984 | 32 |
| 1985 | 22 |
| 1986 | 33 |
| 1987 | 31 |
| 1988 | 33 |
| 1989 | 42 |
| 1990 | 18 |
| 1991 | 36 |
| 1992 | 20 |
| 1993 | 31 |
| 1994 | 30 |
| 1995 | 26 |
| 1996 | 27 |
| 1997 | 23 |
| 1998 | 36 |
| 1999 | 29 |
| 2000 | 34 |
| 2001 | 21 |
| 2002 | 54 |
| 2003 | 34 |
| 2004 | 27 |
| 2005 | 25 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 1994-07-07 | Record high minimum temperature | Record high minimum temperature 33.3 C (91.9 F) |
| 1999-09-16 | Record daily precipitation | Record daily precipitation 211.3 mm (8.3 in) |
| 2000-01-25 | Record daily snowfall | Record daily snowfall 33.0 cm (13.0 in) |
| 2000-01-26 | Record daily snowfall | Record daily snowfall 40.6 cm (16.0 in) |
Wettest Day of Each Month
Sep: 211.3 mm (8.3 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 63.5 mm (2.5 in) | 23 January 1998 |
| Feb | 63.8 mm (2.5 in) | 24 February 2003 |
| Mar | 95.3 mm (3.8 in) | 30 March 2001 |
| Apr | 62.7 mm (2.5 in) | 13 April 1961 |
| May | 119.4 mm (4.7 in) | 26 May 1997 |
| Jun | 68.6 mm (2.7 in) | 17 June 2004 |
| Jul | 105.4 mm (4.1 in) | 23 July 1969 |
| Aug | 132.6 mm (5.2 in) | 13 August 1955 |
| Sep | 211.3 mm (8.3 in) | 16 September 1999 |
| Oct | 82.8 mm (3.3 in) | 19 October 1966 |
| Nov | 77.2 mm (3.0 in) | 12 November 2002 |
| Dec | 61.5 mm (2.4 in) | 5 December 1993 |
Period of Record Coverage
1951 to 2005| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1951 | 259 | 71% | No |
| 1952 | 338 | 92% | Yes |
| 1953 | 328 | 90% | No |
| 1954 | 348 | 95% | Yes |
| 1955 | 318 | 87% | No |
| 1956 | 318 | 87% | No |
| 1957 | 236 | 65% | No |
| 1958 | 341 | 93% | Yes |
| 1959 | 363 | 99% | Yes |
| 1960 | 360 | 98% | Yes |
| 1961 | 357 | 98% | Yes |
| 1962 | 361 | 99% | Yes |
| 1963 | 90 | 25% | No |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 304 | 83% | No |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 364 | 100% | Yes |
| 1970 | 181 | 50% | No |
| 1976 | 182 | 50% | No |
| 1977 | 362 | 99% | Yes |
| 1978 | 362 | 99% | Yes |
| 1979 | 360 | 99% | Yes |
| 1980 | 361 | 99% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 324 | 89% | No |
| 1983 | 356 | 98% | Yes |
| 1984 | 362 | 99% | Yes |
| 1985 | 361 | 99% | Yes |
| 1986 | 358 | 98% | Yes |
| 1987 | 359 | 98% | Yes |
| 1988 | 354 | 97% | Yes |
| 1989 | 360 | 99% | Yes |
| 1990 | 176 | 48% | No |
| 1991 | 320 | 88% | No |
| 1992 | 356 | 97% | Yes |
| 1993 | 317 | 87% | No |
| 1994 | 289 | 79% | No |
| 1995 | 324 | 89% | No |
| 1996 | 329 | 90% | No |
| 1997 | 345 | 95% | Yes |
| 1998 | 350 | 96% | Yes |
| 1999 | 338 | 93% | Yes |
| 2000 | 345 | 94% | Yes |
| 2001 | 346 | 95% | Yes |
| 2002 | 300 | 82% | No |
| 2003 | 314 | 86% | No |
| 2004 | 334 | 91% | Yes |
| 2005 | 243 | 67% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 22 November 2005 | Annapolis Police Brks, US | daily high max | 22.8 C (73.0 F) | 1.1 C (2.0 F) | 22 years | 13 of 100 (Routine) |
| 15 November 2005 | Annapolis Police Brks, US | daily high min | 16.7 C (62.1 F) | 0.6 C (1.1 F) | 12 years | 9 of 100 (Routine) |
| 15 October 2005 | Annapolis Police Brks, US | daily high min | 20.0 C (68.0 F) | 1.1 C (2.0 F) | 20 years | 13 of 100 (Routine) |
| 14 October 2005 | Annapolis Police Brks, US | daily high max (Tie) | 27.8 C (82.0 F) | tie | 16 years | 2 of 100 (Routine) |
| 14 October 2005 | Annapolis Police Brks, US | daily high min (Tie) | 18.9 C (66.0 F) | tie | 10 years | 2 of 100 (Routine) |
| 30 September 2005 | Annapolis Police Brks, US | daily high min (Tie) | 21.1 C (70.0 F) | tie | 51 years | 5 of 100 (Routine) |
| 20 September 2005 | Annapolis Police Brks, US | monthly high min (Tie) | 26.1 C (79.0 F) | tie | 3 years | 3 of 100 (Routine) |
| 19 September 2005 | Annapolis Police Brks, US | monthly high min (Tie) | 26.1 C (79.0 F) | tie | 3 years | 3 of 100 (Routine) |
| 16 September 2005 | Annapolis Police Brks, US | daily high min (Tie) | 24.4 C (75.9 F) | tie | 7 years | 1 of 100 (Routine) |
| 1 September 2005 | Annapolis Police Brks, US | daily high min | 25.6 C (78.1 F) | 1.2 C (2.2 F) | 10 years | 10 of 100 (Routine) |
| 31 August 2005 | Annapolis Police Brks, US | daily high min | 26.7 C (80.1 F) | 2.8 C (5.0 F) | 40 years | 25 of 100 (Routine) |
| 30 August 2005 | Annapolis Police Brks, US | daily high min (Tie) | 22.8 C (73.0 F) | tie | 27 years | 3 of 100 (Routine) |
| 21 August 2005 | Annapolis Police Brks, US | daily high min | 27.2 C (81.0 F) | 2.2 C (4.0 F) | 0 years | 11 of 100 (Routine) |
| 17 August 2005 | Annapolis Police Brks, US | daily high min | 26.7 C (80.1 F) | 1.1 C (2.0 F) | 10 years | 11 of 100 (Routine) |
| 24 July 2005 | Annapolis Police Brks, US | daily high min | 31.7 C (89.1 F) | 5.0 C (9.0 F) | 2 years | 20 of 100 (Routine) |
| 14 July 2005 | Annapolis Police Brks, US | daily high min | 26.1 C (79.0 F) | 0.5 C (0.9 F) | 11 years | 9 of 100 (Routine) |
| 14 July 2005 | Annapolis Police Brks, US | daily low max (Tie) | 27.2 C (81.0 F) | tie | 28 years | 3 of 100 (Routine) |
| 13 July 2005 | Annapolis Police Brks, US | daily high min | 26.7 C (80.1 F) | 2.3 C (4.1 F) | 12 years | 15 of 100 (Routine) |
| 8 July 2005 | Annapolis Police Brks, US | daily rain | 48.3 mm (1.9 in) | 12.2 mm (0.5 in) | 40 years | 25 of 100 (Routine) |
| 10 June 2005 | Annapolis Police Brks, US | daily high min | 24.4 C (75.9 F) | 0.5 C (0.9 F) | 20 years | 12 of 100 (Routine) |
Climate Trend
34 complete years, 1952 to 2004| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1952 | 13.0 C | -0.60 C |
| 1954 | 13.3 C | -0.33 C |
| 1958 | 11.9 C | -1.66 C |
| 1959 | 13.6 C | -0.03 C |
| 1960 | 12.4 C | -1.24 C |
| 1961 | 12.9 C | -0.72 C |
| 1962 | 12.5 C | -1.09 C |
| 1964 | 13.4 C | -0.16 C |
| 1965 | 13.2 C | -0.40 C |
| 1967 | 12.7 C | -0.92 C |
| 1968 | 13.3 C | -0.33 C |
| 1969 | 13.1 C | -0.54 C |
| 1977 | 13.7 C | +0.15 C |
| 1978 | 13.1 C | -0.50 C |
| 1979 | 13.3 C | -0.30 C |
| 1980 | 13.9 C | +0.28 C |
| 1981 | 13.7 C | +0.09 C |
| 1983 | 14.1 C | +0.52 C |
| 1984 | 14.1 C | +0.46 C |
| 1985 | 14.6 C | +1.05 C |
| 1986 | 14.2 C | +0.57 C |
| 1987 | 13.3 C | -0.27 C |
| 1988 | 13.2 C | -0.38 C |
| 1989 | 12.7 C | -0.93 C |
| 1992 | 13.2 C | -0.42 C |
| 1995 | 14.2 C | +0.64 C |
| 1996 | 13.6 C | +0.02 C |
| 1997 | 14.1 C | +0.54 C |
| 1998 | 15.8 C | +2.21 C |
| 1999 | 14.9 C | +1.31 C |
| 2000 | 13.6 C | -0.03 C |
| 2001 | 14.5 C | +0.92 C |
| 2003 | 14.4 C | +0.82 C |
| 2004 | 14.7 C | +1.13 C |
The annual mean temperature here has risen by 0.4 C (0.2 to 0.5) per decade over 1952 to 2004. In Fahrenheit: 0.6 F (0.4 to 0.9) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.4 C (0.2 to 0.5) per decade | 0.6 F (0.4 to 0.9) per decade | 1952 to 2004 | 34 | Rise |
| Mean daily maximum | 0.3 C (0.1 to 0.5) per decade | 0.6 F (0.3 to 0.9) per decade | 1952 to 2004 | 34 | Rise |
| Mean daily minimum | 0.4 C (0.2 to 0.6) per decade | 0.7 F (0.4 to 1.1) per decade | 1952 to 2004 | 34 | 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
1951 to 2005| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 39.4 C (102.9 F) | 1983 | 36.7 C (98.1 F) | 50 |
| Coldest night (TNn) | -22.2 C (-8.0 F) | 1984 | -15.3 C (4.5 F) | 50 |
| Wettest day (Rx1day) | 211.3 mm (8.3 in) | 1999 | 62.1 mm (2.4 in) | 50 |
| Wettest five days (Rx5day) | 264.6 mm (10.4 in) | 1999 | 100.1 mm (3.9 in) | 50 |
| Longest dry spell (CDD) | 41 days | 1995 | 21 days | 50 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1951 | 35.6 C (96.1 F) |
| 1952 | 37.2 C (99.0 F) |
| 1953 | 38.3 C (100.9 F) |
| 1954 | 37.8 C (100.0 F) |
| 1955 | 36.7 C (98.1 F) |
| 1956 | 35.6 C (96.1 F) |
| 1957 | 38.9 C (102.0 F) |
| 1958 | 36.1 C (97.0 F) |
| 1959 | 37.8 C (100.0 F) |
| 1960 | 35.0 C (95.0 F) |
| 1961 | 35.0 C (95.0 F) |
| 1962 | 36.7 C (98.1 F) |
| 1963 | 26.7 C (80.1 F) |
| 1964 | 36.1 C (97.0 F) |
| 1965 | 35.0 C (95.0 F) |
| 1966 | 36.7 C (98.1 F) |
| 1967 | 33.3 C (91.9 F) |
| 1968 | 36.7 C (98.1 F) |
| 1969 | 36.1 C (97.0 F) |
| 1970 | 35.0 C (95.0 F) |
| 1976 | 33.9 C (93.0 F) |
| 1977 | 36.1 C (97.0 F) |
| 1978 | 36.7 C (98.1 F) |
| 1979 | 35.6 C (96.1 F) |
| 1980 | 37.8 C (100.0 F) |
| 1981 | 36.1 C (97.0 F) |
| 1982 | 35.6 C (96.1 F) |
| 1983 | 39.4 C (102.9 F) |
| 1984 | 35.0 C (95.0 F) |
| 1985 | 36.1 C (97.0 F) |
| 1986 | 37.8 C (100.0 F) |
| 1987 | 38.3 C (100.9 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 36.7 C (98.1 F) |
| 1990 | 35.0 C (95.0 F) |
| 1991 | 39.4 C (102.9 F) |
| 1992 | 37.2 C (99.0 F) |
| 1993 | 38.3 C (100.9 F) |
| 1994 | 36.7 C (98.1 F) |
| 1995 | 38.3 C (100.9 F) |
| 1996 | 35.0 C (95.0 F) |
| 1997 | 38.3 C (100.9 F) |
| 1998 | 37.8 C (100.0 F) |
| 1999 | 37.8 C (100.0 F) |
| 2000 | 36.7 C (98.1 F) |
| 2001 | 36.7 C (98.1 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 35.6 C (96.1 F) |
| 2004 | 34.4 C (93.9 F) |
| 2005 | 36.1 C (97.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1951 | -16.1 C (3.0 F) |
| 1952 | -14.4 C (6.1 F) |
| 1953 | -10.0 C (14.0 F) |
| 1954 | -15.0 C (5.0 F) |
| 1955 | -15.0 C (5.0 F) |
| 1956 | -11.7 C (10.9 F) |
| 1957 | -18.3 C (-0.9 F) |
| 1958 | -15.6 C (3.9 F) |
| 1959 | -17.2 C (1.0 F) |
| 1960 | -16.1 C (3.0 F) |
| 1961 | -17.8 C (0.0 F) |
| 1962 | -16.7 C (1.9 F) |
| 1963 | -16.7 C (1.9 F) |
| 1964 | -16.7 C (1.9 F) |
| 1965 | -16.1 C (3.0 F) |
| 1966 | -13.9 C (7.0 F) |
| 1967 | -12.8 C (9.0 F) |
| 1968 | -16.1 C (3.0 F) |
| 1969 | -11.1 C (12.0 F) |
| 1970 | -15.6 C (3.9 F) |
| 1976 | -12.2 C (10.0 F) |
| 1977 | -19.4 C (-2.9 F) |
| 1978 | -13.3 C (8.1 F) |
| 1979 | -17.8 C (0.0 F) |
| 1980 | -12.8 C (9.0 F) |
| 1981 | -16.1 C (3.0 F) |
| 1982 | -8.3 C (17.1 F) |
| 1983 | -17.2 C (1.0 F) |
| 1984 | -22.2 C (-8.0 F) |
| 1985 | -20.6 C (-5.1 F) |
| 1986 | -12.2 C (10.0 F) |
| 1987 | -18.3 C (-0.9 F) |
| 1988 | -15.6 C (3.9 F) |
| 1989 | -18.3 C (-0.9 F) |
| 1990 | -10.6 C (12.9 F) |
| 1991 | -15.6 C (3.9 F) |
| 1992 | -11.7 C (10.9 F) |
| 1993 | -12.2 C (10.0 F) |
| 1994 | -18.3 C (-0.9 F) |
| 1995 | -13.3 C (8.1 F) |
| 1996 | -16.7 C (1.9 F) |
| 1997 | -14.4 C (6.1 F) |
| 1998 | -7.8 C (18.0 F) |
| 1999 | -12.2 C (10.0 F) |
| 2000 | -15.6 C (3.9 F) |
| 2001 | -8.9 C (16.0 F) |
| 2002 | -8.9 C (16.0 F) |
| 2003 | -14.4 C (6.1 F) |
| 2004 | -12.2 C (10.0 F) |
| 2005 | -12.8 C (9.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1951 | 53.6 mm (2.1 in) |
| 1952 | 75.2 mm (3.0 in) |
| 1953 | 76.2 mm (3.0 in) |
| 1954 | 45.0 mm (1.8 in) |
| 1955 | 132.6 mm (5.2 in) |
| 1956 | 59.9 mm (2.4 in) |
| 1957 | 45.7 mm (1.8 in) |
| 1958 | 58.4 mm (2.3 in) |
| 1959 | 81.5 mm (3.2 in) |
| 1960 | 90.7 mm (3.6 in) |
| 1961 | 62.7 mm (2.5 in) |
| 1962 | 46.2 mm (1.8 in) |
| 1963 | 52.1 mm (2.1 in) |
| 1964 | 58.9 mm (2.3 in) |
| 1965 | 45.0 mm (1.8 in) |
| 1966 | 82.8 mm (3.3 in) |
| 1967 | 58.7 mm (2.3 in) |
| 1968 | 80.3 mm (3.2 in) |
| 1969 | 105.4 mm (4.1 in) |
| 1970 | 30.0 mm (1.2 in) |
| 1976 | 51.3 mm (2.0 in) |
| 1977 | 51.1 mm (2.0 in) |
| 1978 | 51.6 mm (2.0 in) |
| 1979 | 100.3 mm (3.9 in) |
| 1980 | 47.5 mm (1.9 in) |
| 1981 | 76.2 mm (3.0 in) |
| 1982 | 52.6 mm (2.1 in) |
| 1983 | 57.2 mm (2.3 in) |
| 1984 | 64.8 mm (2.6 in) |
| 1985 | 182.4 mm (7.2 in) |
| 1986 | 61.0 mm (2.4 in) |
| 1987 | 41.7 mm (1.6 in) |
| 1988 | 51.3 mm (2.0 in) |
| 1989 | 52.3 mm (2.1 in) |
| 1990 | 50.8 mm (2.0 in) |
| 1991 | 51.6 mm (2.0 in) |
| 1992 | 50.8 mm (2.0 in) |
| 1993 | 61.5 mm (2.4 in) |
| 1994 | 111.5 mm (4.4 in) |
| 1995 | 71.1 mm (2.8 in) |
| 1996 | 76.2 mm (3.0 in) |
| 1997 | 119.4 mm (4.7 in) |
| 1998 | 63.5 mm (2.5 in) |
| 1999 | 211.3 mm (8.3 in) |
| 2000 | 88.9 mm (3.5 in) |
| 2001 | 95.3 mm (3.8 in) |
| 2002 | 77.2 mm (3.0 in) |
| 2003 | 82.3 mm (3.2 in) |
| 2004 | 68.6 mm (2.7 in) |
| 2005 | 63.8 mm (2.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1951 | 106.7 mm (4.2 in) |
| 1952 | 133.6 mm (5.3 in) |
| 1953 | 84.4 mm (3.3 in) |
| 1954 | 53.8 mm (2.1 in) |
| 1955 | 245.1 mm (9.6 in) |
| 1956 | 100.5 mm (4.0 in) |
| 1957 | 60.5 mm (2.4 in) |
| 1958 | 92.9 mm (3.7 in) |
| 1959 | 177.7 mm (7.0 in) |
| 1960 | 121.9 mm (4.8 in) |
| 1961 | 96.2 mm (3.8 in) |
| 1962 | 62.7 mm (2.5 in) |
| 1963 | 52.1 mm (2.1 in) |
| 1964 | 96.0 mm (3.8 in) |
| 1965 | 54.8 mm (2.2 in) |
| 1966 | 88.1 mm (3.5 in) |
| 1967 | 129.1 mm (5.1 in) |
| 1968 | 104.2 mm (4.1 in) |
| 1969 | 134.1 mm (5.3 in) |
| 1970 | 68.6 mm (2.7 in) |
| 1976 | 65.8 mm (2.6 in) |
| 1977 | 96.8 mm (3.8 in) |
| 1978 | 85.9 mm (3.4 in) |
| 1979 | 117.5 mm (4.6 in) |
| 1980 | 62.3 mm (2.5 in) |
| 1981 | 87.4 mm (3.4 in) |
| 1982 | 74.3 mm (2.9 in) |
| 1983 | 111.8 mm (4.4 in) |
| 1984 | 127.0 mm (5.0 in) |
| 1985 | 188.5 mm (7.4 in) |
| 1986 | 101.0 mm (4.0 in) |
| 1987 | 71.2 mm (2.8 in) |
| 1988 | 77.0 mm (3.0 in) |
| 1989 | 93.8 mm (3.7 in) |
| 1990 | 100.9 mm (4.0 in) |
| 1991 | 60.2 mm (2.4 in) |
| 1992 | 99.7 mm (3.9 in) |
| 1993 | 68.6 mm (2.7 in) |
| 1994 | 131.3 mm (5.2 in) |
| 1995 | 74.9 mm (2.9 in) |
| 1996 | 114.4 mm (4.5 in) |
| 1997 | 119.9 mm (4.7 in) |
| 1998 | 103.1 mm (4.1 in) |
| 1999 | 264.6 mm (10.4 in) |
| 2000 | 106.9 mm (4.2 in) |
| 2001 | 112.3 mm (4.4 in) |
| 2002 | 164.7 mm (6.5 in) |
| 2003 | 122.7 mm (4.8 in) |
| 2004 | 130.5 mm (5.1 in) |
| 2005 | 68.4 mm (2.7 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1951 | 14 days |
| 1952 | 22 days |
| 1953 | 21 days |
| 1954 | 29 days |
| 1955 | 27 days |
| 1956 | 25 days |
| 1957 | 21 days |
| 1958 | 17 days |
| 1959 | 26 days |
| 1960 | 19 days |
| 1961 | 15 days |
| 1962 | 15 days |
| 1963 | 7 days |
| 1964 | 29 days |
| 1965 | 20 days |
| 1966 | 29 days |
| 1967 | 19 days |
| 1968 | 27 days |
| 1969 | 23 days |
| 1970 | 17 days |
| 1976 | 14 days |
| 1977 | 29 days |
| 1978 | 14 days |
| 1979 | 11 days |
| 1980 | 17 days |
| 1981 | 24 days |
| 1982 | 16 days |
| 1983 | 13 days |
| 1984 | 23 days |
| 1985 | 23 days |
| 1986 | 23 days |
| 1987 | 13 days |
| 1988 | 32 days |
| 1989 | 21 days |
| 1990 | 12 days |
| 1991 | 22 days |
| 1992 | 17 days |
| 1993 | 20 days |
| 1994 | 23 days |
| 1995 | 41 days |
| 1996 | 10 days |
| 1997 | 16 days |
| 1998 | 21 days |
| 1999 | 19 days |
| 2000 | 20 days |
| 2001 | 37 days |
| 2002 | 29 days |
| 2003 | 21 days |
| 2004 | 17 days |
| 2005 | 29 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
34 years with a frostAcross 34 years with a frost, the median last spring frost at Annapolis Police Brks falls on 9 April and the median first autumn frost on 29 October, which leaves a median of 201 days between them.
Fitted over all years, the growing season changes by +2.6 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1960 to 2004) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 9 April | n/a | 9 April | n/a | -0.3 days per decade |
| First autumn frost | 29 October | n/a | 29 October | n/a | +2.3 days per decade |
| Growing days | 201 days | n/a | 202 days | n/a | +2.6 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
42 years, 1952 to 2004A day with at least 65.7 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 228.9 mm (9.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 65.7 mm (2.6 in) | |
| 5 years | 90.8 mm (3.6 in) | |
| 10 years | 113.1 mm (4.5 in) | |
| 25 years | 149.9 mm (5.9 in) | |
| 50 years | 185.2 mm (7.3 in) | Longer than the 42 years of record |
| 100 years | 228.9 mm (9.0 in) | Longer than the 42 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, 42 years of values from 1952 to 2004.
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: 211.3 mm (8.3 in) in 1999; 182.4 mm (7.2 in) in 1985; 132.6 mm (5.2 in) in 1955.
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).