Wallops Is Nasa Test Facility Weather Records (USW00093739)
Record envelope, standing records and threshold days for Wallops Is Nasa Test Facility (USW00093739), Virginia, United States, with 61 years of record.
Key Facts for Wallops Is Nasa Test Facility
- Wallops Is Nasa Test Facility (USW00093739) is a weather station in Virginia, United States at 37.94 latitude and -75.47 longitude, 10 m (32 ft) above sea level.
- The station reports from 1966 to 2026, 61 years of record.
- 1,464 records set at Wallops Is Nasa Test Facility still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Wallops Is Nasa Test Facility tied a daily record low maximum temperature of 16.7 C (62.1 F) on 27 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Virginia, United States, 37.94 latitude, -75.47 longitude.
- Elevation: 10 m (32 ft).
- Period of record: 1966 to 2026, 61 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
10 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 26.1 C (79.0 F) | -17.8 C (0.0 F) | 17.8 C (64.0 F) | -11.1 C (12.0 F) |
| Feb | 26.1 C (79.0 F) | -18.2 C (-0.8 F) | 17.8 C (64.0 F) | -10.0 C (14.0 F) |
| Mar | 30.0 C (86.0 F) | -10.0 C (14.0 F) | 26.1 C (79.0 F) | -2.2 C (28.0 F) |
| Apr | 33.9 C (93.0 F) | -3.2 C (26.2 F) | 30.6 C (87.1 F) | 0.6 C (33.1 F) |
| May | 36.1 C (97.0 F) | 0.6 C (33.1 F) | 33.3 C (91.9 F) | 4.4 C (39.9 F) |
| Jun | 37.8 C (100.0 F) | 6.1 C (43.0 F) | 35.6 C (96.1 F) | 11.1 C (52.0 F) |
| Jul | 38.9 C (102.0 F) | 11.7 C (53.1 F) | 36.7 C (98.1 F) | 15.0 C (59.0 F) |
| Aug | 37.8 C (100.0 F) | 8.9 C (48.0 F) | 33.9 C (93.0 F) | 17.2 C (63.0 F) |
| Sep | 35.6 C (96.1 F) | 6.1 C (43.0 F) | 33.3 C (91.9 F) | 12.8 C (55.0 F) |
| Oct | 33.9 C (93.0 F) | -1.7 C (28.9 F) | 30.0 C (86.0 F) | 5.6 C (42.1 F) |
| Nov | 27.8 C (82.0 F) | -7.1 C (19.2 F) | n/a | n/a |
| Dec | 25.6 C (78.1 F) | -15.6 C (3.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1966 | 4 |
| 1967 | 63 |
| 1968 | 21 |
| 1969 | 9 |
| 1970 | 23 |
| 1971 | 27 |
| 1972 | 25 |
| 1973 | 10 |
| 1974 | 39 |
| 1975 | 20 |
| 1976 | 33 |
| 1977 | 23 |
| 1978 | 17 |
| 1979 | 32 |
| 1980 | 20 |
| 1981 | 15 |
| 1982 | 17 |
| 1983 | 20 |
| 1984 | 27 |
| 1985 | 36 |
| 1986 | 32 |
| 1987 | 12 |
| 1988 | 25 |
| 1989 | 45 |
| 1990 | 32 |
| 1991 | 36 |
| 1992 | 26 |
| 1993 | 26 |
| 1994 | 25 |
| 1995 | 20 |
| 1996 | 38 |
| 1997 | 27 |
| 1998 | 23 |
| 1999 | 21 |
| 2000 | 22 |
| 2001 | 30 |
| 2002 | 38 |
| 2003 | 11 |
| 2004 | 13 |
| 2005 | 10 |
| 2006 | 16 |
| 2007 | 28 |
| 2008 | 21 |
| 2009 | 14 |
| 2010 | 35 |
| 2011 | 14 |
| 2012 | 29 |
| 2013 | 19 |
| 2014 | 29 |
| 2015 | 40 |
| 2016 | 30 |
| 2017 | 24 |
| 2018 | 41 |
| 2019 | 20 |
| 2020 | 20 |
| 2021 | 14 |
| 2022 | 22 |
| 2023 | 15 |
| 2024 | 15 |
| 2025 | 16 |
| 2026 | 9 |
All-Time Record Progression
9 new records| Date | Kind | Detail |
|---|---|---|
| 2010-01-30 | Record daily snowfall | Record daily snowfall 25.4 cm (10.0 in) |
| 2010-01-31 | Record snow depth | Record snow depth 25.4 cm (10.0 in) |
| 2010-12-26 | Record daily snowfall | Record daily snowfall 25.9 cm (10.2 in) |
| 2011-07-23 | Record high minimum temperature | Record high minimum temperature 28.3 C (82.9 F) |
| 2012-07-07 | Record high maximum temperature | Record high maximum temperature 38.9 C (102.0 F) |
| 2012-10-29 | Record daily precipitation | Record daily precipitation 167.1 mm (6.6 in) |
| 2015-02-20 | Record low minimum temperature | Record low minimum temperature -18.2 C (-0.8 F) |
| 2016-09-29 | Record daily precipitation | Record daily precipitation 186.9 mm (7.4 in) |
| 2026-02-23 | Record snow depth | Record snow depth 27.9 cm (11.0 in) |
Wettest Day of Each Month
Sep: 186.9 mm (7.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 89.9 mm (3.5 in) | 28 January 1998 |
| Feb | 72.9 mm (2.9 in) | 4 February 1998 |
| Mar | 90.4 mm (3.6 in) | 2 March 1994 |
| Apr | 63.0 mm (2.5 in) | 22 April 1972 |
| May | 69.9 mm (2.8 in) | 31 May 1979 |
| Jun | 101.6 mm (4.0 in) | 18 June 1973 |
| Jul | 150.1 mm (5.9 in) | 27 July 2009 |
| Aug | 161.5 mm (6.4 in) | 18 August 1989 |
| Sep | 186.9 mm (7.4 in) | 29 September 2016 |
| Oct | 167.1 mm (6.6 in) | 29 October 2012 |
| Nov | 96.3 mm (3.8 in) | 12 November 2009 |
| Dec | 110.5 mm (4.4 in) | 11 December 2008 |
Period of Record Coverage
1966 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1966 | 92 | 25% | No |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 363 | 99% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 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 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 364 | 100% | Yes |
| 2018 | 363 | 99% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 365 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 284 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 27 September 2026 | Wallops Is Nasa Test Facility, US | daily low max (Tie, Provisional) | 16.7 C (62.1 F) | tie | 36 years | 4 of 100 (Routine) |
| 25 July 2026 | Wallops Is Nasa Test Facility, US | daily low min | 15.0 C (59.0 F) | 1.7 C (3.1 F) | 52 years | 27 of 100 (Routine) |
| 22 July 2026 | Wallops Is Nasa Test Facility, US | daily rain | 90.7 mm (3.6 in) | 52.3 mm (2.1 in) | 20 years | 46 of 100 (Notable) |
| 16 July 2026 | Wallops Is Nasa Test Facility, US | daily high min (Tie) | 25.6 C (78.1 F) | tie | 43 years | 4 of 100 (Routine) |
| 6 July 2026 | Wallops Is Nasa Test Facility, US | daily rain | 37.1 mm (1.5 in) | 17.5 mm (0.7 in) | 33 years | 27 of 100 (Routine) |
| 4 July 2026 | Wallops Is Nasa Test Facility, US | daily high max (Tie) | 35.6 C (96.1 F) | tie | 24 years | 3 of 100 (Routine) |
| 3 July 2026 | Wallops Is Nasa Test Facility, US | daily high max (Tie) | 36.7 C (98.1 F) | tie | 5 years | 1 of 100 (Routine) |
| 12 June 2026 | Wallops Is Nasa Test Facility, US | daily high max | 35.6 C (96.1 F) | 1.7 C (3.1 F) | 24 years | 17 of 100 (Routine) |
| 12 June 2026 | Wallops Is Nasa Test Facility, US | daily high min | 23.3 C (73.9 F) | 0.5 C (0.9 F) | 35 years | 17 of 100 (Routine) |
| 11 June 2026 | Wallops Is Nasa Test Facility, US | daily high max | 35.6 C (96.1 F) | 2.8 C (5.0 F) | 35 years | 23 of 100 (Routine) |
| 11 June 2026 | Wallops Is Nasa Test Facility, US | daily high min (Tie) | 22.2 C (72.0 F) | tie | 12 years | 2 of 100 (Routine) |
| 25 May 2026 | Wallops Is Nasa Test Facility, US | daily rain | 32.5 mm (1.3 in) | 12.9 mm (0.5 in) | 32 years | 26 of 100 (Routine) |
| 23 May 2026 | Wallops Is Nasa Test Facility, US | daily rain | 18.5 mm (0.7 in) | 3.0 mm (0.12 in) | 40 years | 20 of 100 (Routine) |
| 18 May 2026 | Wallops Is Nasa Test Facility, US | daily high max (Tie) | 33.3 C (91.9 F) | tie | 48 years | 5 of 100 (Routine) |
| 12 May 2026 | Wallops Is Nasa Test Facility, US | daily low min | 4.4 C (39.9 F) | 1.2 C (2.2 F) | 5 years | 10 of 100 (Routine) |
| 21 April 2026 | Wallops Is Nasa Test Facility, US | daily low min (Tie) | 1.7 C (35.1 F) | tie | 43 years | 4 of 100 (Routine) |
| 15 April 2026 | Wallops Is Nasa Test Facility, US | daily high min | 16.7 C (62.1 F) | 0.6 C (1.1 F) | 24 years | 14 of 100 (Routine) |
| 15 April 2026 | Wallops Is Nasa Test Facility, US | daily high max (Tie) | 30.6 C (87.1 F) | tie | 1 year | 1 of 100 (Routine) |
| 14 April 2026 | Wallops Is Nasa Test Facility, US | daily high min (Tie) | 15.6 C (60.1 F) | tie | 7 years | 2 of 100 (Routine) |
| 5 April 2026 | Wallops Is Nasa Test Facility, US | daily high min (Tie) | 12.2 C (54.0 F) | tie | 37 years | 4 of 100 (Routine) |
Climate Trend
59 complete years, 1967 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1967 | 11.5 C | -2.52 C |
| 1968 | 12.9 C | -1.07 C |
| 1969 | 12.8 C | -1.19 C |
| 1970 | 13.2 C | -0.82 C |
| 1971 | 14.1 C | +0.07 C |
| 1972 | 13.4 C | -0.58 C |
| 1973 | 14.0 C | -0.02 C |
| 1974 | 13.6 C | -0.43 C |
| 1975 | 14.3 C | +0.32 C |
| 1976 | 13.1 C | -0.94 C |
| 1977 | 13.3 C | -0.69 C |
| 1978 | 12.9 C | -1.07 C |
| 1979 | 13.5 C | -0.46 C |
| 1980 | 13.1 C | -0.87 C |
| 1981 | 13.0 C | -1.02 C |
| 1982 | 13.2 C | -0.81 C |
| 1983 | 13.6 C | -0.39 C |
| 1984 | 13.5 C | -0.54 C |
| 1985 | 13.9 C | -0.07 C |
| 1986 | 13.8 C | -0.23 C |
| 1987 | 13.5 C | -0.48 C |
| 1988 | 13.0 C | -1.01 C |
| 1989 | 13.6 C | -0.44 C |
| 1990 | 15.1 C | +1.11 C |
| 1991 | 15.0 C | +1.04 C |
| 1992 | 13.4 C | -0.58 C |
| 1993 | 13.5 C | -0.46 C |
| 1994 | 13.8 C | -0.25 C |
| 1995 | 13.7 C | -0.28 C |
| 1996 | 13.1 C | -0.95 C |
| 1997 | 13.6 C | -0.43 C |
| 1998 | 14.7 C | +0.71 C |
| 1999 | 14.1 C | +0.08 C |
| 2000 | 13.2 C | -0.82 C |
| 2001 | 13.8 C | -0.18 C |
| 2002 | 15.2 C | +1.20 C |
| 2003 | 13.4 C | -0.63 C |
| 2004 | 14.0 C | +0.01 C |
| 2005 | 13.8 C | -0.18 C |
| 2006 | 14.6 C | +0.57 C |
| 2007 | 14.1 C | +0.10 C |
| 2008 | 14.3 C | +0.26 C |
| 2009 | 13.9 C | -0.06 C |
| 2010 | 14.2 C | +0.24 C |
| 2011 | 15.1 C | +1.12 C |
| 2012 | 15.7 C | +1.70 C |
| 2013 | 14.7 C | +0.68 C |
| 2014 | 13.9 C | -0.07 C |
| 2015 | 14.4 C | +0.38 C |
| 2016 | 15.0 C | +0.97 C |
| 2017 | 14.9 C | +0.89 C |
| 2018 | 15.4 C | +1.43 C |
| 2019 | 15.4 C | +1.44 C |
| 2020 | 15.3 C | +1.29 C |
| 2021 | 15.0 C | +0.98 C |
| 2022 | 14.7 C | +0.65 C |
| 2023 | 15.4 C | +1.38 C |
| 2024 | 15.3 C | +1.32 C |
| 2025 | 14.4 C | +0.39 C |
The annual mean temperature here has risen by 0.4 C (0.3 to 0.5) per decade over 1967 to 2025. In Fahrenheit: 0.7 F (0.5 to 0.8) 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 | 0.4 C (0.3 to 0.5) per decade | 0.7 F (0.5 to 0.8) per decade | 1967 to 2025 | 59 | Rise |
| Mean daily maximum | 0.5 C (0.4 to 0.6) per decade | 0.9 F (0.7 to 1.1) per decade | 1967 to 2025 | 59 | Rise |
| Mean daily minimum | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.2 to 0.6) per decade | 1967 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
1966 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.9 C (102.0 F) | 2012 | 35.6 C (96.1 F) | 61 |
| Coldest night (TNn) | -18.2 C (-0.8 F) | 2015 | -11.7 C (10.9 F) | 61 |
| Wettest day (Rx1day) | 186.9 mm (7.4 in) | 2016 | 71.9 mm (2.8 in) | 61 |
| Wettest five days (Rx5day) | 215.4 mm (8.5 in) | 2012 | 95.7 mm (3.8 in) | 61 |
| Longest dry spell (CDD) | 55 days | 2001 | 20 days | 61 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1966 | 25.6 C (78.1 F) |
| 1967 | 32.2 C (90.0 F) |
| 1968 | 37.2 C (99.0 F) |
| 1969 | 35.0 C (95.0 F) |
| 1970 | 33.3 C (91.9 F) |
| 1971 | 33.3 C (91.9 F) |
| 1972 | 34.4 C (93.9 F) |
| 1973 | 35.0 C (95.0 F) |
| 1974 | 34.4 C (93.9 F) |
| 1975 | 33.9 C (93.0 F) |
| 1976 | 33.9 C (93.0 F) |
| 1977 | 38.3 C (100.9 F) |
| 1978 | 34.4 C (93.9 F) |
| 1979 | 34.4 C (93.9 F) |
| 1980 | 35.6 C (96.1 F) |
| 1981 | 34.4 C (93.9 F) |
| 1982 | 32.2 C (90.0 F) |
| 1983 | 36.1 C (97.0 F) |
| 1984 | 33.9 C (93.0 F) |
| 1985 | 34.4 C (93.9 F) |
| 1986 | 36.1 C (97.0 F) |
| 1987 | 36.1 C (97.0 F) |
| 1988 | 35.0 C (95.0 F) |
| 1989 | 36.1 C (97.0 F) |
| 1990 | 35.6 C (96.1 F) |
| 1991 | 37.8 C (100.0 F) |
| 1992 | 35.6 C (96.1 F) |
| 1993 | 38.3 C (100.9 F) |
| 1994 | 35.0 C (95.0 F) |
| 1995 | 35.6 C (96.1 F) |
| 1996 | 35.6 C (96.1 F) |
| 1997 | 35.6 C (96.1 F) |
| 1998 | 36.7 C (98.1 F) |
| 1999 | 36.1 C (97.0 F) |
| 2000 | 33.3 C (91.9 F) |
| 2001 | 34.4 C (93.9 F) |
| 2002 | 35.6 C (96.1 F) |
| 2003 | 33.9 C (93.0 F) |
| 2004 | 33.9 C (93.0 F) |
| 2005 | 34.4 C (93.9 F) |
| 2006 | 36.1 C (97.0 F) |
| 2007 | 36.1 C (97.0 F) |
| 2008 | 35.0 C (95.0 F) |
| 2009 | 33.3 C (91.9 F) |
| 2010 | 37.8 C (100.0 F) |
| 2011 | 37.8 C (100.0 F) |
| 2012 | 38.9 C (102.0 F) |
| 2013 | 34.4 C (93.9 F) |
| 2014 | 35.6 C (96.1 F) |
| 2015 | 35.0 C (95.0 F) |
| 2016 | 36.7 C (98.1 F) |
| 2017 | 35.0 C (95.0 F) |
| 2018 | 35.6 C (96.1 F) |
| 2019 | 36.7 C (98.1 F) |
| 2020 | 37.8 C (100.0 F) |
| 2021 | 34.4 C (93.9 F) |
| 2022 | 35.6 C (96.1 F) |
| 2023 | 35.6 C (96.1 F) |
| 2024 | 35.0 C (95.0 F) |
| 2025 | 36.7 C (98.1 F) |
| 2026 | 36.7 C (98.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1966 | -8.3 C (17.1 F) |
| 1967 | -8.9 C (16.0 F) |
| 1968 | -12.2 C (10.0 F) |
| 1969 | -8.9 C (16.0 F) |
| 1970 | -12.8 C (9.0 F) |
| 1971 | -13.3 C (8.1 F) |
| 1972 | -13.3 C (8.1 F) |
| 1973 | -10.6 C (12.9 F) |
| 1974 | -6.7 C (19.9 F) |
| 1975 | -7.2 C (19.0 F) |
| 1976 | -11.1 C (12.0 F) |
| 1977 | -15.0 C (5.0 F) |
| 1978 | -10.0 C (14.0 F) |
| 1979 | -14.4 C (6.1 F) |
| 1980 | -13.3 C (8.1 F) |
| 1981 | -14.4 C (6.1 F) |
| 1982 | -17.8 C (0.0 F) |
| 1983 | -13.3 C (8.1 F) |
| 1984 | -12.8 C (9.0 F) |
| 1985 | -17.8 C (0.0 F) |
| 1986 | -11.7 C (10.9 F) |
| 1987 | -13.3 C (8.1 F) |
| 1988 | -11.1 C (12.0 F) |
| 1989 | -15.6 C (3.9 F) |
| 1990 | -9.4 C (15.1 F) |
| 1991 | -10.6 C (12.9 F) |
| 1992 | -11.1 C (12.0 F) |
| 1993 | -15.0 C (5.0 F) |
| 1994 | -17.8 C (0.0 F) |
| 1995 | -12.2 C (10.0 F) |
| 1996 | -16.1 C (3.0 F) |
| 1997 | -13.3 C (8.1 F) |
| 1998 | -8.3 C (17.1 F) |
| 1999 | -10.6 C (12.9 F) |
| 2000 | -11.1 C (12.0 F) |
| 2001 | -8.3 C (17.1 F) |
| 2002 | -7.8 C (18.0 F) |
| 2003 | -16.1 C (3.0 F) |
| 2004 | -12.8 C (9.0 F) |
| 2005 | -11.7 C (10.9 F) |
| 2006 | -9.4 C (15.1 F) |
| 2007 | -11.7 C (10.9 F) |
| 2008 | -12.2 C (10.0 F) |
| 2009 | -14.4 C (6.1 F) |
| 2010 | -12.8 C (9.0 F) |
| 2011 | -11.7 C (10.9 F) |
| 2012 | -8.3 C (17.1 F) |
| 2013 | -11.1 C (12.0 F) |
| 2014 | -16.0 C (3.2 F) |
| 2015 | -18.2 C (-0.8 F) |
| 2016 | -10.5 C (13.1 F) |
| 2017 | -14.3 C (6.3 F) |
| 2018 | -16.6 C (2.1 F) |
| 2019 | -11.6 C (11.1 F) |
| 2020 | -6.6 C (20.1 F) |
| 2021 | -6.0 C (21.2 F) |
| 2022 | -10.5 C (13.1 F) |
| 2023 | -9.3 C (15.3 F) |
| 2024 | -7.7 C (18.1 F) |
| 2025 | -11.6 C (11.1 F) |
| 2026 | -11.1 C (12.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1966 | 20.6 mm (0.8 in) |
| 1967 | 65.0 mm (2.6 in) |
| 1968 | 32.8 mm (1.3 in) |
| 1969 | 60.7 mm (2.4 in) |
| 1970 | 45.5 mm (1.8 in) |
| 1971 | 71.9 mm (2.8 in) |
| 1972 | 63.0 mm (2.5 in) |
| 1973 | 101.6 mm (4.0 in) |
| 1974 | 43.2 mm (1.7 in) |
| 1975 | 63.0 mm (2.5 in) |
| 1976 | 82.8 mm (3.3 in) |
| 1977 | 109.5 mm (4.3 in) |
| 1978 | 65.0 mm (2.6 in) |
| 1979 | 99.3 mm (3.9 in) |
| 1980 | 79.2 mm (3.1 in) |
| 1981 | 79.2 mm (3.1 in) |
| 1982 | 50.5 mm (2.0 in) |
| 1983 | 39.1 mm (1.5 in) |
| 1984 | 68.8 mm (2.7 in) |
| 1985 | 104.6 mm (4.1 in) |
| 1986 | 63.0 mm (2.5 in) |
| 1987 | 66.8 mm (2.6 in) |
| 1988 | 42.2 mm (1.7 in) |
| 1989 | 161.5 mm (6.4 in) |
| 1990 | 57.2 mm (2.3 in) |
| 1991 | 145.3 mm (5.7 in) |
| 1992 | 73.7 mm (2.9 in) |
| 1993 | 61.2 mm (2.4 in) |
| 1994 | 90.4 mm (3.6 in) |
| 1995 | 47.2 mm (1.9 in) |
| 1996 | 92.5 mm (3.6 in) |
| 1997 | 37.1 mm (1.5 in) |
| 1998 | 89.9 mm (3.5 in) |
| 1999 | 77.5 mm (3.1 in) |
| 2000 | 82.0 mm (3.2 in) |
| 2001 | 70.1 mm (2.8 in) |
| 2002 | 65.5 mm (2.6 in) |
| 2003 | 53.3 mm (2.1 in) |
| 2004 | 113.3 mm (4.5 in) |
| 2005 | 74.7 mm (2.9 in) |
| 2006 | 105.2 mm (4.1 in) |
| 2007 | 62.0 mm (2.4 in) |
| 2008 | 110.5 mm (4.4 in) |
| 2009 | 150.1 mm (5.9 in) |
| 2010 | 63.8 mm (2.5 in) |
| 2011 | 157.0 mm (6.2 in) |
| 2012 | 167.1 mm (6.6 in) |
| 2013 | 61.5 mm (2.4 in) |
| 2014 | 45.2 mm (1.8 in) |
| 2015 | 54.4 mm (2.1 in) |
| 2016 | 186.9 mm (7.4 in) |
| 2017 | 102.9 mm (4.1 in) |
| 2018 | 86.6 mm (3.4 in) |
| 2019 | 116.8 mm (4.6 in) |
| 2020 | 98.3 mm (3.9 in) |
| 2021 | 48.8 mm (1.9 in) |
| 2022 | 49.5 mm (1.9 in) |
| 2023 | 66.8 mm (2.6 in) |
| 2024 | 77.5 mm (3.1 in) |
| 2025 | 89.4 mm (3.5 in) |
| 2026 | 90.7 mm (3.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1966 | 27.2 mm (1.1 in) |
| 1967 | 80.5 mm (3.2 in) |
| 1968 | 59.0 mm (2.3 in) |
| 1969 | 70.6 mm (2.8 in) |
| 1970 | 62.7 mm (2.5 in) |
| 1971 | 78.8 mm (3.1 in) |
| 1972 | 85.1 mm (3.4 in) |
| 1973 | 113.8 mm (4.5 in) |
| 1974 | 46.8 mm (1.8 in) |
| 1975 | 83.3 mm (3.3 in) |
| 1976 | 134.6 mm (5.3 in) |
| 1977 | 172.7 mm (6.8 in) |
| 1978 | 73.6 mm (2.9 in) |
| 1979 | 133.2 mm (5.2 in) |
| 1980 | 79.2 mm (3.1 in) |
| 1981 | 105.1 mm (4.1 in) |
| 1982 | 57.7 mm (2.3 in) |
| 1983 | 52.6 mm (2.1 in) |
| 1984 | 90.9 mm (3.6 in) |
| 1985 | 117.5 mm (4.6 in) |
| 1986 | 93.2 mm (3.7 in) |
| 1987 | 101.6 mm (4.0 in) |
| 1988 | 57.7 mm (2.3 in) |
| 1989 | 192.0 mm (7.6 in) |
| 1990 | 97.6 mm (3.8 in) |
| 1991 | 145.3 mm (5.7 in) |
| 1992 | 101.6 mm (4.0 in) |
| 1993 | 82.8 mm (3.3 in) |
| 1994 | 92.7 mm (3.6 in) |
| 1995 | 79.5 mm (3.1 in) |
| 1996 | 152.9 mm (6.0 in) |
| 1997 | 87.4 mm (3.4 in) |
| 1998 | 111.8 mm (4.4 in) |
| 1999 | 137.2 mm (5.4 in) |
| 2000 | 106.9 mm (4.2 in) |
| 2001 | 89.5 mm (3.5 in) |
| 2002 | 76.0 mm (3.0 in) |
| 2003 | 94.0 mm (3.7 in) |
| 2004 | 188.7 mm (7.4 in) |
| 2005 | 94.0 mm (3.7 in) |
| 2006 | 182.9 mm (7.2 in) |
| 2007 | 78.3 mm (3.1 in) |
| 2008 | 126.8 mm (5.0 in) |
| 2009 | 184.9 mm (7.3 in) |
| 2010 | 99.9 mm (3.9 in) |
| 2011 | 168.2 mm (6.6 in) |
| 2012 | 215.4 mm (8.5 in) |
| 2013 | 94.2 mm (3.7 in) |
| 2014 | 83.9 mm (3.3 in) |
| 2015 | 108.2 mm (4.3 in) |
| 2016 | 215.3 mm (8.5 in) |
| 2017 | 124.6 mm (4.9 in) |
| 2018 | 95.7 mm (3.8 in) |
| 2019 | 156.7 mm (6.2 in) |
| 2020 | 99.1 mm (3.9 in) |
| 2021 | 74.2 mm (2.9 in) |
| 2022 | 68.7 mm (2.7 in) |
| 2023 | 110.0 mm (4.3 in) |
| 2024 | 121.9 mm (4.8 in) |
| 2025 | 95.0 mm (3.7 in) |
| 2026 | 138.5 mm (5.5 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1966 | 13 days |
| 1967 | 18 days |
| 1968 | 20 days |
| 1969 | 18 days |
| 1970 | 21 days |
| 1971 | 16 days |
| 1972 | 22 days |
| 1973 | 26 days |
| 1974 | 26 days |
| 1975 | 13 days |
| 1976 | 20 days |
| 1977 | 23 days |
| 1978 | 23 days |
| 1979 | 11 days |
| 1980 | 21 days |
| 1981 | 16 days |
| 1982 | 22 days |
| 1983 | 28 days |
| 1984 | 21 days |
| 1985 | 17 days |
| 1986 | 34 days |
| 1987 | 24 days |
| 1988 | 16 days |
| 1989 | 23 days |
| 1990 | 18 days |
| 1991 | 28 days |
| 1992 | 15 days |
| 1993 | 34 days |
| 1994 | 24 days |
| 1995 | 25 days |
| 1996 | 13 days |
| 1997 | 18 days |
| 1998 | 20 days |
| 1999 | 20 days |
| 2000 | 43 days |
| 2001 | 55 days |
| 2002 | 22 days |
| 2003 | 15 days |
| 2004 | 13 days |
| 2005 | 20 days |
| 2006 | 30 days |
| 2007 | 16 days |
| 2008 | 15 days |
| 2009 | 20 days |
| 2010 | 19 days |
| 2011 | 17 days |
| 2012 | 13 days |
| 2013 | 14 days |
| 2014 | 13 days |
| 2015 | 19 days |
| 2016 | 14 days |
| 2017 | 21 days |
| 2018 | 16 days |
| 2019 | 27 days |
| 2020 | 12 days |
| 2021 | 17 days |
| 2022 | 13 days |
| 2023 | 20 days |
| 2024 | 24 days |
| 2025 | 18 days |
| 2026 | 14 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 Wallops Is Nasa Test Facility falls on 3 April and the median first autumn frost on 12 November, which leaves a median of 222 days between them.
Fitted over all years, the growing season changes by +1.2 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1996 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 3 April | n/a | 2 April | n/a | -0.7 days per decade |
| First autumn frost | 12 November | n/a | 12 November | n/a | +0.4 days per decade |
| Growing days | 222 days | n/a | 223 days | n/a | +1.2 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
59 years, 1967 to 2025A day with at least 73.3 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 208.9 mm (8.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 73.3 mm (2.9 in) | |
| 5 years | 103.2 mm (4.1 in) | |
| 10 years | 125.4 mm (4.9 in) | |
| 25 years | 156.4 mm (6.2 in) | |
| 50 years | 181.7 mm (7.2 in) | |
| 100 years | 208.9 mm (8.2 in) | Longer than the 59 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, 59 years of values from 1967 to 2025.
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: 186.9 mm (7.4 in) in 2016; 167.1 mm (6.6 in) in 2012; 161.5 mm (6.4 in) in 1989.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Wallops Is Nasa Test Facility had a mean temperature of 15.0 C (58.9 F) and 1,120.7 mm (44.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Langley AFB (United States, 123 km away), Norfolk Intl AP (United States, 132 km away) and Oceana NAS (United States, 134 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Langley AFB | United States | 123 km (76 mi) | 14.9 C (58.9 F) | 1,142.0 mm (45.0 in) | 0.57 |
| Norfolk Intl AP | United States | 132 km (82 mi) | 15.2 C (59.4 F) | 1,134.5 mm (44.7 in) | 0.62 |
| Oceana NAS | United States | 134 km (83 mi) | 15.1 C (59.2 F) | 1,079.3 mm (42.5 in) | 0.69 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-14).