Danbury Weather Records (USC00061762)
Record envelope, standing records and threshold days for Danbury (USC00061762), Connecticut, United States, with 90 years of record.
Key Facts for Danbury
- Danbury (USC00061762) is a weather station in Connecticut, United States at 41.40 latitude and -73.42 longitude, 123 m (405 ft) above sea level.
- The station reports from 1937 to 2026, 90 years of record.
- 1,464 records set at Danbury still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Danbury set a daily record high minimum temperature of 17.8 C (64.0 F) on 2 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Connecticut, United States, 41.40 latitude, -73.42 longitude.
- Elevation: 123 m (405 ft).
- Period of record: 1937 to 2026, 90 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
4 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 21.7 C (71.1 F) | -27.8 C (-18.0 F) | 10.0 C (50.0 F) | -16.1 C (3.0 F) |
| Feb | 25.6 C (78.1 F) | -26.7 C (-16.1 F) | 12.2 C (54.0 F) | -18.9 C (-2.0 F) |
| Mar | 33.3 C (91.9 F) | -22.8 C (-9.0 F) | 26.1 C (79.0 F) | -10.6 C (12.9 F) |
| Apr | 35.0 C (95.0 F) | -10.0 C (14.0 F) | 31.1 C (88.0 F) | -3.3 C (26.1 F) |
| May | 36.1 C (97.0 F) | -3.9 C (25.0 F) | 34.4 C (93.9 F) | 2.8 C (37.0 F) |
| Jun | 37.2 C (99.0 F) | 1.7 C (35.1 F) | 32.8 C (91.0 F) | 5.6 C (42.1 F) |
| Jul | 41.1 C (106.0 F) | 3.3 C (37.9 F) | 37.2 C (99.0 F) | 11.7 C (53.1 F) |
| Aug | 40.0 C (104.0 F) | 2.8 C (37.0 F) | 33.9 C (93.0 F) | 13.3 C (55.9 F) |
| Sep | 37.8 C (100.0 F) | -5.0 C (23.0 F) | 28.3 C (82.9 F) | 8.3 C (46.9 F) |
| Oct | 32.8 C (91.0 F) | -8.9 C (16.0 F) | 29.4 C (84.9 F) | 1.1 C (34.0 F) |
| Nov | 27.8 C (82.0 F) | -17.8 C (0.0 F) | n/a | n/a |
| Dec | 24.4 C (75.9 F) | -23.9 C (-11.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1937 | 4 |
| 1938 | 40 |
| 1939 | 25 |
| 1940 | 13 |
| 1941 | 16 |
| 1942 | 21 |
| 1943 | 41 |
| 1944 | 23 |
| 1945 | 3 |
| 1946 | 25 |
| 1947 | 22 |
| 1948 | 33 |
| 1949 | 27 |
| 1950 | 26 |
| 1951 | 15 |
| 1952 | 9 |
| 1953 | 25 |
| 1954 | 16 |
| 1955 | 11 |
| 1956 | 32 |
| 1957 | 13 |
| 1958 | 11 |
| 1959 | 19 |
| 1960 | 11 |
| 1961 | 12 |
| 1962 | 17 |
| 1963 | 24 |
| 1964 | 20 |
| 1965 | 22 |
| 1966 | 16 |
| 1967 | 27 |
| 1968 | 17 |
| 1969 | 5 |
| 1970 | 9 |
| 1971 | 10 |
| 1972 | 13 |
| 1973 | 14 |
| 1974 | 17 |
| 1975 | 7 |
| 1976 | 29 |
| 1977 | 11 |
| 1978 | 9 |
| 1979 | 29 |
| 1980 | 12 |
| 1981 | 17 |
| 1982 | 15 |
| 1983 | 9 |
| 1984 | 14 |
| 1985 | 11 |
| 1986 | 41 |
| 1991 | 34 |
| 1992 | 15 |
| 1993 | 23 |
| 1994 | 22 |
| 1995 | 23 |
| 1996 | 33 |
| 1997 | 14 |
| 1998 | 16 |
| 1999 | 16 |
| 2000 | 21 |
| 2001 | 20 |
| 2002 | 24 |
| 2003 | 14 |
| 2004 | 6 |
| 2005 | 16 |
| 2006 | 9 |
| 2007 | 16 |
| 2008 | 11 |
| 2009 | 15 |
| 2010 | 7 |
| 2011 | 11 |
| 2012 | 5 |
| 2013 | 15 |
| 2014 | 3 |
| 2015 | 4 |
| 2016 | 16 |
| 2017 | 27 |
| 2018 | 23 |
| 2019 | 8 |
| 2020 | 17 |
| 2021 | 14 |
| 2022 | 18 |
| 2023 | 11 |
| 2024 | 6 |
| 2025 | 12 |
| 2026 | 11 |
All-Time Record Progression
9 new records| Date | Kind | Detail |
|---|---|---|
| 1980-07-21 | Record high minimum temperature | Record high minimum temperature 24.4 C (75.9 F) |
| 1983-02-12 | Record daily snowfall | Record daily snowfall 61.0 cm (24.0 in) |
| 1984-01-22 | Record low minimum temperature | Record low minimum temperature -27.2 C (-17.0 F) |
| 1986-05-29 | Record high minimum temperature | Record high minimum temperature 27.2 C (81.0 F) |
| 1986-07-06 | Record high minimum temperature | Record high minimum temperature 28.9 C (84.0 F) |
| 1994-01-27 | Record low minimum temperature | Record low minimum temperature -27.8 C (-18.0 F) |
| 1995-07-15 | Record high maximum temperature | Record high maximum temperature 41.1 C (106.0 F) |
| 1996-01-08 | Record snow depth | Record snow depth 91.4 cm (36.0 in) |
| 1999-09-16 | Record daily precipitation | Record daily precipitation 242.6 mm (9.6 in) |
Wettest Day of Each Month
Sep: 242.6 mm (9.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 104.1 mm (4.1 in) | 25 January 1938 |
| Feb | 82.8 mm (3.3 in) | 2 February 1973 |
| Mar | 93.0 mm (3.7 in) | 6 March 2011 |
| Apr | 87.9 mm (3.5 in) | 5 April 1984 |
| May | 91.9 mm (3.6 in) | 19 May 1999 |
| Jun | 112.8 mm (4.4 in) | 17 June 2001 |
| Jul | 147.6 mm (5.8 in) | 16 July 1992 |
| Aug | 196.6 mm (7.7 in) | 18 August 2024 |
| Sep | 242.6 mm (9.6 in) | 16 September 1999 |
| Oct | 154.9 mm (6.1 in) | 16 October 1955 |
| Nov | 101.6 mm (4.0 in) | 23 November 1992 |
| Dec | 104.6 mm (4.1 in) | 13 December 1983 |
Period of Record Coverage
1937 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1937 | 78 | 21% | No |
| 1938 | 352 | 96% | Yes |
| 1939 | 334 | 92% | Yes |
| 1940 | 79 | 22% | No |
| 1941 | 206 | 56% | No |
| 1942 | 294 | 81% | No |
| 1943 | 294 | 81% | No |
| 1944 | 256 | 70% | No |
| 1945 | 92 | 25% | No |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 365 | 100% | Yes |
| 1949 | 330 | 90% | Yes |
| 1950 | 346 | 95% | Yes |
| 1951 | 354 | 97% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 365 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 362 | 99% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 364 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 226 | 62% | No |
| 1991 | 334 | 92% | Yes |
| 1992 | 364 | 99% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 363 | 99% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 364 | 100% | Yes |
| 1998 | 355 | 97% | Yes |
| 1999 | 346 | 95% | Yes |
| 2000 | 364 | 99% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 337 | 92% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 304 | 83% | No |
| 2009 | 318 | 87% | No |
| 2010 | 274 | 75% | No |
| 2011 | 333 | 91% | Yes |
| 2012 | 92 | 25% | No |
| 2013 | 243 | 67% | No |
| 2014 | 185 | 51% | No |
| 2015 | 243 | 67% | No |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 335 | 92% | Yes |
| 2019 | 334 | 92% | Yes |
| 2020 | 275 | 75% | No |
| 2021 | 304 | 83% | No |
| 2022 | 364 | 100% | Yes |
| 2023 | 334 | 92% | Yes |
| 2024 | 298 | 81% | No |
| 2025 | 296 | 81% | No |
| 2026 | 247 | 68% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 2 October 2026 | Danbury, US | daily high min (Provisional) | 17.8 C (64.0 F) | 0.6 C (1.1 F) | 24 years | 17 of 100 (Routine) |
| 7 August 2026 | Danbury, US | daily rain | 75.4 mm (3.0 in) | 31.7 mm (1.2 in) | 51 years | 42 of 100 (Notable) |
| 29 July 2026 | Danbury, US | daily rain | 55.1 mm (2.2 in) | 6.3 mm (0.25 in) | 68 years | 33 of 100 (Routine) |
| 21 July 2026 | Danbury, US | daily rain | 41.1 mm (1.6 in) | 4.3 mm (0.17 in) | 88 years | 37 of 100 (Notable) |
| 7 July 2026 | Danbury, US | daily low max | 20.0 C (68.0 F) | 2.2 C (4.0 F) | 20 years | 21 of 100 (Routine) |
| 6 July 2026 | Danbury, US | daily rain | 140.0 mm (5.5 in) | 77.0 mm (3.0 in) | 52 years | 64 of 100 (Major) |
| 3 July 2026 | Danbury, US | daily high min | 23.9 C (75.0 F) | 0.6 C (1.1 F) | 24 years | 17 of 100 (Routine) |
| 2 July 2026 | Danbury, US | daily high max | 37.2 C (99.0 F) | 1.1 C (2.0 F) | 60 years | 30 of 100 (Routine) |
| 2 July 2026 | Danbury, US | daily high min | 23.9 C (75.0 F) | 1.1 C (2.0 F) | 24 years | 19 of 100 (Routine) |
| 26 June 2026 | Danbury, US | daily rain | 17.0 mm (0.7 in) | 1.8 mm (0.07 in) | 3 years | 10 of 100 (Routine) |
| 12 June 2026 | Danbury, US | daily high min (Tie) | 21.7 C (71.1 F) | tie | 52 years | 6 of 100 (Routine) |
| 11 June 2026 | Danbury, US | daily high min (Tie) | 21.7 C (71.1 F) | tie | 25 years | 4 of 100 (Routine) |
| 20 May 2026 | Danbury, US | daily high min (Tie) | 18.9 C (66.0 F) | tie | 29 years | 4 of 100 (Routine) |
| 19 May 2026 | Danbury, US | daily high min | 18.9 C (66.0 F) | 1.1 C (2.0 F) | 40 years | 23 of 100 (Routine) |
| 16 April 2026 | Danbury, US | daily high min | 17.2 C (63.0 F) | 3.9 C (7.0 F) | 24 years | 24 of 100 (Routine) |
| 15 April 2026 | Danbury, US | daily high max | 29.4 C (84.9 F) | 0.5 C (0.9 F) | 88 years | 35 of 100 (Notable) |
| 15 April 2026 | Danbury, US | daily high min | 15.0 C (59.0 F) | 0.6 C (1.1 F) | 24 years | 17 of 100 (Routine) |
| 14 April 2026 | Danbury, US | daily high min (Tie) | 13.3 C (55.9 F) | tie | 24 years | 4 of 100 (Routine) |
| 31 March 2026 | Danbury, US | daily high min | 13.3 C (55.9 F) | 2.2 C (4.0 F) | 65 years | 32 of 100 (Routine) |
| 16 March 2026 | Danbury, US | daily rain | 42.7 mm (1.7 in) | 0.8 mm (0.03 in) | 19 years | 14 of 100 (Routine) |
Climate Trend
59 complete years, 1938 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1938 | 10.4 C | +0.35 C |
| 1939 | 9.9 C | -0.14 C |
| 1946 | 10.1 C | +0.04 C |
| 1947 | 9.2 C | -0.78 C |
| 1948 | 9.1 C | -0.87 C |
| 1951 | 10.0 C | -0.02 C |
| 1952 | 10.3 C | +0.33 C |
| 1953 | 10.9 C | +0.90 C |
| 1954 | 10.1 C | +0.08 C |
| 1955 | 10.0 C | -0.04 C |
| 1956 | 9.4 C | -0.66 C |
| 1957 | 10.2 C | +0.22 C |
| 1958 | 8.9 C | -1.14 C |
| 1959 | 10.3 C | +0.30 C |
| 1960 | 9.6 C | -0.41 C |
| 1961 | 9.8 C | -0.19 C |
| 1962 | 9.0 C | -1.04 C |
| 1963 | 9.3 C | -0.68 C |
| 1964 | 9.9 C | -0.15 C |
| 1965 | 9.5 C | -0.49 C |
| 1966 | 9.7 C | -0.34 C |
| 1967 | 9.2 C | -0.84 C |
| 1968 | 9.6 C | -0.45 C |
| 1969 | 9.7 C | -0.32 C |
| 1970 | 9.6 C | -0.43 C |
| 1971 | 9.9 C | -0.13 C |
| 1972 | 9.4 C | -0.65 C |
| 1973 | 10.7 C | +0.69 C |
| 1974 | 9.8 C | -0.23 C |
| 1975 | 10.4 C | +0.34 C |
| 1976 | 9.4 C | -0.60 C |
| 1977 | 9.9 C | -0.10 C |
| 1978 | 9.0 C | -1.01 C |
| 1979 | 10.1 C | +0.04 C |
| 1980 | 9.6 C | -0.39 C |
| 1981 | 9.9 C | -0.15 C |
| 1982 | 9.6 C | -0.37 C |
| 1983 | 10.3 C | +0.31 C |
| 1984 | 9.9 C | -0.16 C |
| 1985 | 9.8 C | -0.19 C |
| 1992 | 9.7 C | -0.35 C |
| 1993 | 10.1 C | +0.10 C |
| 1994 | 10.0 C | 0.00 C |
| 1995 | 9.8 C | -0.25 C |
| 1996 | 8.5 C | -1.48 C |
| 1997 | 9.6 C | -0.40 C |
| 1998 | 11.5 C | +1.48 C |
| 1999 | 10.6 C | +0.60 C |
| 2000 | 10.2 C | +0.17 C |
| 2001 | 11.2 C | +1.16 C |
| 2002 | 11.5 C | +1.46 C |
| 2003 | 10.1 C | +0.06 C |
| 2004 | 10.5 C | +0.47 C |
| 2005 | 10.8 C | +0.79 C |
| 2007 | 11.1 C | +1.05 C |
| 2016 | 11.7 C | +1.66 C |
| 2017 | 11.2 C | +1.15 C |
| 2022 | 11.1 C | +1.10 C |
| 2025 | 10.7 C | +0.66 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1938 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (0.1 to 0.2) per decade | 0.3 F (0.2 to 0.4) per decade | 1938 to 2025 | 59 | Rise |
| Mean daily maximum | 0.11 C (0.02 to 0.20) per decade | 0.19 F (0.03 to 0.36) per decade | 1938 to 2025 | 59 | Rise |
| Mean daily minimum | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.2 to 0.5) per decade | 1938 to 2025 | 59 | 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
1937 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 41.1 C (106.0 F) | 1995 | 35.0 C (95.0 F) | 86 |
| Coldest night (TNn) | -27.8 C (-18.0 F) | 1994 | -19.4 C (-2.9 F) | 86 |
| Wettest day (Rx1day) | 242.6 mm (9.6 in) | 1999 | 80.3 mm (3.2 in) | 86 |
| Wettest five days (Rx5day) | 307.6 mm (12.1 in) | 1955 | 109.4 mm (4.3 in) | 86 |
| Longest dry spell (CDD) | 36 days | 1947 | 16 days | 86 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1937 | 21.1 C (70.0 F) |
| 1938 | 34.4 C (93.9 F) |
| 1939 | 35.0 C (95.0 F) |
| 1940 | 26.1 C (79.0 F) |
| 1941 | 33.3 C (91.9 F) |
| 1942 | 33.3 C (91.9 F) |
| 1943 | 40.6 C (105.1 F) |
| 1944 | 35.6 C (96.1 F) |
| 1945 | 27.8 C (82.0 F) |
| 1946 | 34.4 C (93.9 F) |
| 1947 | 35.0 C (95.0 F) |
| 1948 | 37.8 C (100.0 F) |
| 1949 | 37.2 C (99.0 F) |
| 1950 | 32.2 C (90.0 F) |
| 1951 | 31.7 C (89.1 F) |
| 1952 | 36.1 C (97.0 F) |
| 1953 | 37.8 C (100.0 F) |
| 1954 | 36.7 C (98.1 F) |
| 1955 | 36.7 C (98.1 F) |
| 1956 | 33.9 C (93.0 F) |
| 1957 | 36.7 C (98.1 F) |
| 1958 | 32.2 C (90.0 F) |
| 1959 | 35.0 C (95.0 F) |
| 1960 | 31.7 C (89.1 F) |
| 1961 | 33.9 C (93.0 F) |
| 1962 | 33.9 C (93.0 F) |
| 1963 | 35.0 C (95.0 F) |
| 1964 | 35.0 C (95.0 F) |
| 1965 | 35.0 C (95.0 F) |
| 1966 | 38.3 C (100.9 F) |
| 1967 | 35.0 C (95.0 F) |
| 1968 | 36.1 C (97.0 F) |
| 1969 | 35.6 C (96.1 F) |
| 1970 | 33.9 C (93.0 F) |
| 1971 | 33.3 C (91.9 F) |
| 1972 | 33.3 C (91.9 F) |
| 1973 | 34.4 C (93.9 F) |
| 1974 | 34.4 C (93.9 F) |
| 1975 | 35.6 C (96.1 F) |
| 1976 | 34.4 C (93.9 F) |
| 1977 | 37.2 C (99.0 F) |
| 1978 | 34.4 C (93.9 F) |
| 1979 | 33.3 C (91.9 F) |
| 1980 | 36.7 C (98.1 F) |
| 1981 | 34.4 C (93.9 F) |
| 1982 | 34.4 C (93.9 F) |
| 1983 | 35.0 C (95.0 F) |
| 1984 | 34.4 C (93.9 F) |
| 1985 | 33.3 C (91.9 F) |
| 1986 | 36.1 C (97.0 F) |
| 1991 | 40.6 C (105.1 F) |
| 1992 | 35.0 C (95.0 F) |
| 1993 | 39.4 C (102.9 F) |
| 1994 | 36.7 C (98.1 F) |
| 1995 | 41.1 C (106.0 F) |
| 1996 | 33.9 C (93.0 F) |
| 1997 | 36.1 C (97.0 F) |
| 1998 | 35.0 C (95.0 F) |
| 1999 | 38.9 C (102.0 F) |
| 2000 | 36.1 C (97.0 F) |
| 2001 | 39.4 C (102.9 F) |
| 2002 | 36.1 C (97.0 F) |
| 2003 | 35.0 C (95.0 F) |
| 2004 | 34.4 C (93.9 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 37.2 C (99.0 F) |
| 2007 | 35.6 C (96.1 F) |
| 2008 | 34.4 C (93.9 F) |
| 2009 | 33.9 C (93.0 F) |
| 2010 | 40.0 C (104.0 F) |
| 2011 | 38.9 C (102.0 F) |
| 2012 | 37.2 C (99.0 F) |
| 2013 | 35.6 C (96.1 F) |
| 2014 | 32.8 C (91.0 F) |
| 2015 | 34.4 C (93.9 F) |
| 2016 | 35.6 C (96.1 F) |
| 2017 | 34.4 C (93.9 F) |
| 2018 | 35.6 C (96.1 F) |
| 2019 | 35.6 C (96.1 F) |
| 2020 | 33.3 C (91.9 F) |
| 2021 | 35.6 C (96.1 F) |
| 2022 | 35.6 C (96.1 F) |
| 2023 | 34.4 C (93.9 F) |
| 2024 | 34.4 C (93.9 F) |
| 2025 | 37.2 C (99.0 F) |
| 2026 | 37.2 C (99.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1937 | -14.4 C (6.1 F) |
| 1938 | -26.7 C (-16.1 F) |
| 1939 | -21.1 C (-6.0 F) |
| 1940 | -13.9 C (7.0 F) |
| 1941 | -14.4 C (6.1 F) |
| 1942 | -26.7 C (-16.1 F) |
| 1943 | -26.7 C (-16.1 F) |
| 1944 | -23.3 C (-9.9 F) |
| 1945 | -19.4 C (-2.9 F) |
| 1946 | -18.9 C (-2.0 F) |
| 1947 | -18.3 C (-0.9 F) |
| 1948 | -25.0 C (-13.0 F) |
| 1949 | -17.8 C (0.0 F) |
| 1950 | -21.1 C (-6.0 F) |
| 1951 | -18.3 C (-0.9 F) |
| 1952 | -18.9 C (-2.0 F) |
| 1953 | -14.4 C (6.1 F) |
| 1954 | -22.8 C (-9.0 F) |
| 1955 | -22.2 C (-8.0 F) |
| 1956 | -17.8 C (0.0 F) |
| 1957 | -24.4 C (-11.9 F) |
| 1958 | -18.9 C (-2.0 F) |
| 1959 | -18.3 C (-0.9 F) |
| 1960 | -18.9 C (-2.0 F) |
| 1961 | -26.7 C (-16.1 F) |
| 1962 | -22.2 C (-8.0 F) |
| 1963 | -21.7 C (-7.1 F) |
| 1964 | -21.1 C (-6.0 F) |
| 1965 | -23.3 C (-9.9 F) |
| 1966 | -18.9 C (-2.0 F) |
| 1967 | -23.3 C (-9.9 F) |
| 1968 | -23.3 C (-9.9 F) |
| 1969 | -17.2 C (1.0 F) |
| 1970 | -22.2 C (-8.0 F) |
| 1971 | -22.2 C (-8.0 F) |
| 1972 | -20.6 C (-5.1 F) |
| 1973 | -17.8 C (0.0 F) |
| 1974 | -20.0 C (-4.0 F) |
| 1975 | -18.9 C (-2.0 F) |
| 1976 | -21.7 C (-7.1 F) |
| 1977 | -20.0 C (-4.0 F) |
| 1978 | -20.0 C (-4.0 F) |
| 1979 | -23.3 C (-9.9 F) |
| 1980 | -23.9 C (-11.0 F) |
| 1981 | -25.0 C (-13.0 F) |
| 1982 | -25.0 C (-13.0 F) |
| 1983 | -20.0 C (-4.0 F) |
| 1984 | -27.2 C (-17.0 F) |
| 1985 | -22.2 C (-8.0 F) |
| 1986 | -18.9 C (-2.0 F) |
| 1991 | -15.0 C (5.0 F) |
| 1992 | -14.4 C (6.1 F) |
| 1993 | -20.6 C (-5.1 F) |
| 1994 | -27.8 C (-18.0 F) |
| 1995 | -18.9 C (-2.0 F) |
| 1996 | -21.7 C (-7.1 F) |
| 1997 | -18.3 C (-0.9 F) |
| 1998 | -14.4 C (6.1 F) |
| 1999 | -17.8 C (0.0 F) |
| 2000 | -18.9 C (-2.0 F) |
| 2001 | -15.0 C (5.0 F) |
| 2002 | -14.4 C (6.1 F) |
| 2003 | -18.9 C (-2.0 F) |
| 2004 | -20.0 C (-4.0 F) |
| 2005 | -20.0 C (-4.0 F) |
| 2006 | -16.1 C (3.0 F) |
| 2007 | -16.7 C (1.9 F) |
| 2008 | -16.7 C (1.9 F) |
| 2009 | -19.4 C (-2.9 F) |
| 2010 | -16.1 C (3.0 F) |
| 2011 | -20.6 C (-5.1 F) |
| 2012 | -10.0 C (14.0 F) |
| 2013 | -13.3 C (8.1 F) |
| 2014 | -15.0 C (5.0 F) |
| 2015 | -21.7 C (-7.1 F) |
| 2016 | -23.3 C (-9.9 F) |
| 2017 | -16.7 C (1.9 F) |
| 2018 | -22.2 C (-8.0 F) |
| 2019 | -18.3 C (-0.9 F) |
| 2020 | -13.3 C (8.1 F) |
| 2021 | -12.8 C (9.0 F) |
| 2022 | -17.8 C (0.0 F) |
| 2023 | -21.7 C (-7.1 F) |
| 2024 | -16.1 C (3.0 F) |
| 2025 | -19.4 C (-2.9 F) |
| 2026 | -18.9 C (-2.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1937 | 107.2 mm (4.2 in) |
| 1938 | 140.7 mm (5.5 in) |
| 1939 | 53.3 mm (2.1 in) |
| 1940 | 45.7 mm (1.8 in) |
| 1941 | 61.7 mm (2.4 in) |
| 1942 | 51.1 mm (2.0 in) |
| 1943 | 58.4 mm (2.3 in) |
| 1944 | 66.0 mm (2.6 in) |
| 1945 | 39.6 mm (1.6 in) |
| 1946 | 85.6 mm (3.4 in) |
| 1947 | 84.1 mm (3.3 in) |
| 1948 | 73.7 mm (2.9 in) |
| 1949 | 43.7 mm (1.7 in) |
| 1950 | 94.0 mm (3.7 in) |
| 1951 | 54.9 mm (2.2 in) |
| 1952 | 91.2 mm (3.6 in) |
| 1953 | 72.6 mm (2.9 in) |
| 1954 | 108.5 mm (4.3 in) |
| 1955 | 154.9 mm (6.1 in) |
| 1956 | 66.0 mm (2.6 in) |
| 1957 | 66.0 mm (2.6 in) |
| 1958 | 70.1 mm (2.8 in) |
| 1959 | 64.5 mm (2.5 in) |
| 1960 | 113.0 mm (4.4 in) |
| 1961 | 41.4 mm (1.6 in) |
| 1962 | 69.9 mm (2.8 in) |
| 1963 | 70.1 mm (2.8 in) |
| 1964 | 50.8 mm (2.0 in) |
| 1965 | 34.5 mm (1.4 in) |
| 1966 | 44.5 mm (1.8 in) |
| 1967 | 66.8 mm (2.6 in) |
| 1968 | 83.1 mm (3.3 in) |
| 1969 | 51.3 mm (2.0 in) |
| 1970 | 66.0 mm (2.6 in) |
| 1971 | 80.5 mm (3.2 in) |
| 1972 | 102.1 mm (4.0 in) |
| 1973 | 82.8 mm (3.3 in) |
| 1974 | 75.7 mm (3.0 in) |
| 1975 | 134.4 mm (5.3 in) |
| 1976 | 103.1 mm (4.1 in) |
| 1977 | 94.0 mm (3.7 in) |
| 1978 | 52.3 mm (2.1 in) |
| 1979 | 84.6 mm (3.3 in) |
| 1980 | 74.4 mm (2.9 in) |
| 1981 | 60.7 mm (2.4 in) |
| 1982 | 96.0 mm (3.8 in) |
| 1983 | 104.6 mm (4.1 in) |
| 1984 | 87.9 mm (3.5 in) |
| 1985 | 103.6 mm (4.1 in) |
| 1986 | 95.3 mm (3.8 in) |
| 1991 | 89.7 mm (3.5 in) |
| 1992 | 147.6 mm (5.8 in) |
| 1993 | 60.2 mm (2.4 in) |
| 1994 | 107.7 mm (4.2 in) |
| 1995 | 101.1 mm (4.0 in) |
| 1996 | 95.3 mm (3.8 in) |
| 1997 | 59.4 mm (2.3 in) |
| 1998 | 73.2 mm (2.9 in) |
| 1999 | 242.6 mm (9.6 in) |
| 2000 | 82.8 mm (3.3 in) |
| 2001 | 112.8 mm (4.4 in) |
| 2002 | 51.3 mm (2.0 in) |
| 2003 | 52.8 mm (2.1 in) |
| 2004 | 101.6 mm (4.0 in) |
| 2005 | 140.5 mm (5.5 in) |
| 2006 | 79.2 mm (3.1 in) |
| 2007 | 85.6 mm (3.4 in) |
| 2008 | 151.4 mm (6.0 in) |
| 2009 | 59.4 mm (2.3 in) |
| 2010 | 82.6 mm (3.3 in) |
| 2011 | 93.0 mm (3.7 in) |
| 2012 | 47.5 mm (1.9 in) |
| 2013 | 84.8 mm (3.3 in) |
| 2014 | 72.6 mm (2.9 in) |
| 2015 | 80.0 mm (3.1 in) |
| 2016 | 54.9 mm (2.2 in) |
| 2017 | 122.2 mm (4.8 in) |
| 2018 | 79.5 mm (3.1 in) |
| 2019 | 74.2 mm (2.9 in) |
| 2020 | 61.5 mm (2.4 in) |
| 2021 | 146.3 mm (5.8 in) |
| 2022 | 83.6 mm (3.3 in) |
| 2023 | 127.5 mm (5.0 in) |
| 2024 | 196.6 mm (7.7 in) |
| 2025 | 67.6 mm (2.7 in) |
| 2026 | 140.0 mm (5.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1937 | 137.7 mm (5.4 in) |
| 1938 | 278.4 mm (11.0 in) |
| 1939 | 91.9 mm (3.6 in) |
| 1940 | 71.1 mm (2.8 in) |
| 1941 | 89.4 mm (3.5 in) |
| 1942 | 97.3 mm (3.8 in) |
| 1943 | 97.3 mm (3.8 in) |
| 1944 | 66.5 mm (2.6 in) |
| 1945 | 74.9 mm (2.9 in) |
| 1946 | 104.7 mm (4.1 in) |
| 1947 | 169.2 mm (6.7 in) |
| 1948 | 135.4 mm (5.3 in) |
| 1949 | 135.4 mm (5.3 in) |
| 1950 | 100.6 mm (4.0 in) |
| 1951 | 102.7 mm (4.0 in) |
| 1952 | 108.0 mm (4.3 in) |
| 1953 | 100.9 mm (4.0 in) |
| 1954 | 117.6 mm (4.6 in) |
| 1955 | 307.6 mm (12.1 in) |
| 1956 | 81.5 mm (3.2 in) |
| 1957 | 86.6 mm (3.4 in) |
| 1958 | 115.3 mm (4.5 in) |
| 1959 | 94.0 mm (3.7 in) |
| 1960 | 127.4 mm (5.0 in) |
| 1961 | 73.6 mm (2.9 in) |
| 1962 | 84.4 mm (3.3 in) |
| 1963 | 90.7 mm (3.6 in) |
| 1964 | 78.4 mm (3.1 in) |
| 1965 | 47.2 mm (1.9 in) |
| 1966 | 85.7 mm (3.4 in) |
| 1967 | 71.1 mm (2.8 in) |
| 1968 | 109.3 mm (4.3 in) |
| 1969 | 82.6 mm (3.3 in) |
| 1970 | 97.7 mm (3.8 in) |
| 1971 | 145.3 mm (5.7 in) |
| 1972 | 123.4 mm (4.9 in) |
| 1973 | 124.7 mm (4.9 in) |
| 1974 | 93.2 mm (3.7 in) |
| 1975 | 267.8 mm (10.5 in) |
| 1976 | 128.7 mm (5.1 in) |
| 1977 | 157.0 mm (6.2 in) |
| 1978 | 100.1 mm (3.9 in) |
| 1979 | 156.4 mm (6.2 in) |
| 1980 | 150.8 mm (5.9 in) |
| 1981 | 94.0 mm (3.7 in) |
| 1982 | 171.0 mm (6.7 in) |
| 1983 | 134.1 mm (5.3 in) |
| 1984 | 197.8 mm (7.8 in) |
| 1985 | 117.0 mm (4.6 in) |
| 1986 | 118.7 mm (4.7 in) |
| 1991 | 139.7 mm (5.5 in) |
| 1992 | 152.2 mm (6.0 in) |
| 1993 | 80.0 mm (3.1 in) |
| 1994 | 128.2 mm (5.0 in) |
| 1995 | 105.2 mm (4.1 in) |
| 1996 | 141.9 mm (5.6 in) |
| 1997 | 76.5 mm (3.0 in) |
| 1998 | 104.0 mm (4.1 in) |
| 1999 | 260.9 mm (10.3 in) |
| 2000 | 96.5 mm (3.8 in) |
| 2001 | 132.6 mm (5.2 in) |
| 2002 | 92.8 mm (3.7 in) |
| 2003 | 85.6 mm (3.4 in) |
| 2004 | 110.0 mm (4.3 in) |
| 2005 | 209.6 mm (8.3 in) |
| 2006 | 107.7 mm (4.2 in) |
| 2007 | 162.8 mm (6.4 in) |
| 2008 | 175.8 mm (6.9 in) |
| 2009 | 107.6 mm (4.2 in) |
| 2010 | 130.0 mm (5.1 in) |
| 2011 | 157.2 mm (6.2 in) |
| 2012 | 65.3 mm (2.6 in) |
| 2013 | 135.7 mm (5.3 in) |
| 2014 | 110.0 mm (4.3 in) |
| 2015 | 88.4 mm (3.5 in) |
| 2016 | 63.1 mm (2.5 in) |
| 2017 | 138.5 mm (5.5 in) |
| 2018 | 109.5 mm (4.3 in) |
| 2019 | 90.2 mm (3.6 in) |
| 2020 | 85.6 mm (3.4 in) |
| 2021 | 175.7 mm (6.9 in) |
| 2022 | 156.8 mm (6.2 in) |
| 2023 | 157.5 mm (6.2 in) |
| 2024 | 197.1 mm (7.8 in) |
| 2025 | 105.2 mm (4.1 in) |
| 2026 | 173.8 mm (6.8 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1937 | 19 days |
| 1938 | 20 days |
| 1939 | 26 days |
| 1940 | 20 days |
| 1941 | 19 days |
| 1942 | 18 days |
| 1943 | 13 days |
| 1944 | 13 days |
| 1945 | 11 days |
| 1946 | 18 days |
| 1947 | 36 days |
| 1948 | 20 days |
| 1949 | 21 days |
| 1950 | 10 days |
| 1951 | 11 days |
| 1952 | 24 days |
| 1953 | 20 days |
| 1954 | 11 days |
| 1955 | 15 days |
| 1956 | 15 days |
| 1957 | 15 days |
| 1958 | 20 days |
| 1959 | 14 days |
| 1960 | 18 days |
| 1961 | 15 days |
| 1962 | 14 days |
| 1963 | 28 days |
| 1964 | 19 days |
| 1965 | 15 days |
| 1966 | 25 days |
| 1967 | 12 days |
| 1968 | 22 days |
| 1969 | 16 days |
| 1970 | 17 days |
| 1971 | 18 days |
| 1972 | 11 days |
| 1973 | 15 days |
| 1974 | 14 days |
| 1975 | 15 days |
| 1976 | 20 days |
| 1977 | 18 days |
| 1978 | 19 days |
| 1979 | 14 days |
| 1980 | 24 days |
| 1981 | 25 days |
| 1982 | 21 days |
| 1983 | 13 days |
| 1984 | 20 days |
| 1985 | 18 days |
| 1986 | 17 days |
| 1991 | 13 days |
| 1992 | 15 days |
| 1993 | 18 days |
| 1994 | 10 days |
| 1995 | 16 days |
| 1996 | 13 days |
| 1997 | 12 days |
| 1998 | 13 days |
| 1999 | 17 days |
| 2000 | 21 days |
| 2001 | 29 days |
| 2002 | 11 days |
| 2003 | 14 days |
| 2004 | 17 days |
| 2005 | 14 days |
| 2006 | 11 days |
| 2007 | 22 days |
| 2008 | 15 days |
| 2009 | 19 days |
| 2010 | 18 days |
| 2011 | 20 days |
| 2012 | 13 days |
| 2013 | 13 days |
| 2014 | 13 days |
| 2015 | 15 days |
| 2016 | 15 days |
| 2017 | 12 days |
| 2018 | 12 days |
| 2019 | 11 days |
| 2020 | 16 days |
| 2021 | 16 days |
| 2022 | 15 days |
| 2023 | 13 days |
| 2024 | 33 days |
| 2025 | 11 days |
| 2026 | 11 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
59 years with a frostAcross 59 years with a frost, the median last spring frost at Danbury falls on 29 April and the median first autumn frost on 7 October, which leaves a median of 157 days between them.
Fitted over all years, the growing season changes by +5.1 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1975 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 29 April | n/a | 24 April | n/a | -2.3 days per decade |
| First autumn frost | 7 October | n/a | 11 October | n/a | +2.7 days per decade |
| Growing days | 157 days | n/a | 162 days | n/a | +5.1 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
67 years, 1938 to 2023A day with at least 79.3 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 193.6 mm (7.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 79.3 mm (3.1 in) | |
| 5 years | 107.2 mm (4.2 in) | |
| 10 years | 126.7 mm (5.0 in) | |
| 25 years | 152.6 mm (6.0 in) | |
| 50 years | 172.8 mm (6.8 in) | |
| 100 years | 193.6 mm (7.6 in) | Longer than the 67 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, 67 years of values from 1938 to 2023.
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: 242.6 mm (9.6 in) in 1999; 154.9 mm (6.1 in) in 1955; 147.6 mm (5.8 in) in 1992.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-13).