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Somerset Weather Records (USC00447904)

Record envelope, standing records and threshold days for Somerset (USC00447904), Virginia, United States, with 82 years of record.

Key Facts for Somerset

  • Somerset (USC00447904) is a weather station in Virginia, United States at 38.24 latitude and -78.27 longitude, 155 m (510 ft) above sea level.
  • The station reports from 1945 to 2026, 82 years of record.
  • 1,464 records set at Somerset still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Somerset set a daily record high maximum temperature of 32.2 C (90.0 F) on 15 October 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, 38.24 latitude, -78.27 longitude.
  • Elevation: 155 m (510 ft).
  • Period of record: 1945 to 2026, 82 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

31 days at or beyond a record
Daily record high and record low at Somerset, with 2026 drawn through them The band shows the record high and record low for each calendar day at Somerset. The lines show the 2026 daily maximum and minimum. 31 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Somerset. The lines show the 2026 daily maximum and minimum. 31 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Somerset, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan28.3 C (82.9 F)-20.6 C (-5.1 F)20.0 C (68.0 F)-14.4 C (6.1 F)
Feb26.7 C (80.1 F)-26.1 C (-15.0 F)19.4 C (66.9 F)-16.1 C (3.0 F)
Mar30.6 C (87.1 F)-19.4 C (-2.9 F)30.6 C (87.1 F)-6.7 C (19.9 F)
Apr32.8 C (91.0 F)-7.8 C (18.0 F)32.8 C (91.0 F)-2.8 C (27.0 F)
May35.6 C (96.1 F)-1.7 C (28.9 F)35.6 C (96.1 F)1.1 C (34.0 F)
Jun37.2 C (99.0 F)4.4 C (39.9 F)35.6 C (96.1 F)9.4 C (48.9 F)
Jul39.4 C (102.9 F)8.9 C (48.0 F)38.9 C (102.0 F)13.9 C (57.0 F)
Aug40.0 C (104.0 F)6.7 C (44.1 F)33.3 C (91.9 F)11.7 C (53.1 F)
Sep36.7 C (98.1 F)2.2 C (36.0 F)35.0 C (95.0 F)6.7 C (44.1 F)
Oct35.0 C (95.0 F)-5.0 C (23.0 F)32.2 C (90.0 F)4.4 C (39.9 F)
Nov30.0 C (86.0 F)-11.7 C (10.9 F)n/an/a
Dec27.2 C (81.0 F)-16.1 C (3.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Somerset by the year they were set 1,464 records at Somerset still stand. 1996 holds the most, with 75. 0204060801995: 181996: 751997: 621998: 551999: 432000: 652001: 562002: 592003: 582004: 392005: 322006: 442007: 392008: 272009: 352010: 672011: 472012: 372013: 482014: 512015: 592016: 502017: 502018: 742019: 372020: 372021: 332022: 312023: 392024: 382025: 222026: 3719951999200320072011201520192023
1,464 records at Somerset still stand. 1996 holds the most, with 75.
Standing records at Somerset by the year they were set
Year setStanding records
199518
199675
199762
199855
199943
200065
200156
200259
200358
200439
200532
200644
200739
200827
200935
201067
201147
201237
201348
201451
201559
201650
201750
201874
201937
202037
202133
202231
202339
202438
202522
202637

All-Time Record Progression

1 new records
When Somerset set new all-time records 1 all-time records were set at Somerset between 2 July 1997 and 2 July 1997. Each dot is a new record. Record daily precipitation2 July 1997: Record daily precipitation 218.7 mm (8.6 in)
1 all-time records were set at Somerset between 2 July 1997 and 2 July 1997. Each dot is a new record.
When Somerset set new all-time records
DateKindDetail
1997-07-02Record daily precipitationRecord daily precipitation 218.7 mm (8.6 in)

Wettest Day of Each Month

Jul: 218.7 mm (8.6 in)
Record daily precipitation for each month at Somerset The wettest day on record for each calendar month at Somerset. The most was 218.7 mm (8.6 in) on 2 July 1997. 0100200300 Jan: 97.0 mm (3.8 in), 3 January 2003 Jan Feb: 64.5 mm (2.5 in), 6 February 2010 Feb Mar: 58.4 mm (2.3 in), 7 March 2011 Mar Apr: 73.7 mm (2.9 in), 13 April 2020 Apr May: 101.6 mm (4.0 in), 8 May 2013 May Jun: 202.7 mm (8.0 in), 22 June 1972 Jun Jul: 218.7 mm (8.6 in), 2 July 1997 Jul Aug: 111.3 mm (4.4 in), 18 August 1955 Aug Sep: 115.6 mm (4.6 in), 19 September 2003 Sep Oct: 98.6 mm (3.9 in), 16 October 1954 Oct Nov: 80.5 mm (3.2 in), 12 November 2020 Nov Dec: 78.7 mm (3.1 in), 4 December 1950 Dec
The wettest day on record for each calendar month at Somerset. The most was 218.7 mm (8.6 in) on 2 July 1997.
Record daily precipitation for each month at Somerset
MonthRecord daily precipitation (mm)Date
Jan97.0 mm (3.8 in)3 January 2003
Feb64.5 mm (2.5 in)6 February 2010
Mar58.4 mm (2.3 in)7 March 2011
Apr73.7 mm (2.9 in)13 April 2020
May101.6 mm (4.0 in)8 May 2013
Jun202.7 mm (8.0 in)22 June 1972
Jul218.7 mm (8.6 in)2 July 1997
Aug111.3 mm (4.4 in)18 August 1955
Sep115.6 mm (4.6 in)19 September 2003
Oct98.6 mm (3.9 in)16 October 1954
Nov80.5 mm (3.2 in)12 November 2020
Dec78.7 mm (3.1 in)4 December 1950

Period of Record Coverage

1995 to 2026
Days with data per year at Somerset 32 years of record at Somerset, 1995 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1995, 1999, 2003, 2007, 2008, 2026. 1995: 150 of 365 days1996: 349 of 366 days1997: 351 of 365 days1998: 359 of 365 days1999: 296 of 365 days2000: 354 of 366 days2001: 349 of 365 days2002: 344 of 365 days2003: 321 of 365 days2004: 362 of 366 days2005: 350 of 365 days2006: 341 of 365 days2007: 324 of 365 days2008: 327 of 366 days2009: 344 of 365 days2010: 362 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 349 of 365 days2016: 366 of 366 days2017: 363 of 365 days2018: 354 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 363 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 288 of 365 days1995200020052010201520202025
32 years of record at Somerset, 1995 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1995, 1999, 2003, 2007, 2008, 2026.
Days with data per year at Somerset
YearDays with dataShare of yearComplete
199515041%No
199634995%Yes
199735196%Yes
199835998%Yes
199929681%No
200035497%Yes
200134996%Yes
200234494%Yes
200332188%No
200436299%Yes
200535096%Yes
200634193%Yes
200732489%No
200832789%No
200934494%Yes
201036299%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
201534996%Yes
2016366100%Yes
201736399%Yes
201835497%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
202236399%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628879%No

Latest Records

20
Latest records at Somerset
DateStationRecordValueBeat old record byOld record stoodSignificance
15 October 2026Somerset, USdaily high max (Provisional)32.2 C (90.0 F)2.2 C (4.0 F)17 years12 of 100 (Routine)
15 October 2026Somerset, USdaily high min (Tie, Provisional)17.8 C (64.0 F)tie12 years1 of 100 (Routine)
14 October 2026Somerset, USdaily high max (Provisional)29.4 C (84.9 F)2.2 C (4.0 F)31 years16 of 100 (Routine)
23 September 2026Somerset, USdaily low max (Provisional)16.7 C (62.1 F)1.6 C (2.9 F)27 years14 of 100 (Routine)
18 September 2026Somerset, USdaily high max (Provisional)32.2 C (90.0 F)0.5 C (0.9 F)28 years12 of 100 (Routine)
13 September 2026Somerset, USdaily high min (Provisional)21.1 C (70.0 F)0.5 C (0.9 F)7 years6 of 100 (Routine)
12 September 2026Somerset, USdaily high min (Provisional)21.1 C (70.0 F)1.1 C (2.0 F)5 years6 of 100 (Routine)
23 August 2026Somerset, USdaily rain (Provisional)38.1 mm (1.5 in)15.5 mm (0.6 in)59 years35 of 100 (Notable)
5 August 2026Somerset, USdaily high min22.8 C (73.0 F)1.1 C (2.0 F)21 years12 of 100 (Routine)
24 July 2026Somerset, USdaily low min13.9 C (57.0 F)2.2 C (4.0 F)20 years16 of 100 (Routine)
12 July 2026Somerset, USdaily high min (Tie)22.8 C (73.0 F)tie15 years1 of 100 (Routine)
9 July 2026Somerset, USdaily high min23.9 C (75.0 F)1.1 C (2.0 F)13 years10 of 100 (Routine)
5 July 2026Somerset, USdaily high max37.2 C (99.0 F)1.1 C (2.0 F)24 years13 of 100 (Routine)
4 July 2026Somerset, USdaily high max38.9 C (102.0 F)3.3 C (5.9 F)24 years20 of 100 (Routine)
3 July 2026Somerset, USdaily high max37.8 C (100.0 F)3.4 C (6.1 F)12 years16 of 100 (Routine)
2 July 2026Somerset, USdaily high max37.8 C (100.0 F)2.2 C (4.0 F)13 years13 of 100 (Routine)
2 July 2026Somerset, USdaily high min22.2 C (72.0 F)0.5 C (0.9 F)12 years7 of 100 (Routine)
16 June 2026Somerset, USdaily low min10.6 C (51.1 F)0.5 C (0.9 F)28 years12 of 100 (Routine)
13 June 2026Somerset, USdaily high max35.0 C (95.0 F)1.1 C (2.0 F)25 years12 of 100 (Routine)
12 June 2026Somerset, USdaily high max35.6 C (96.1 F)1.2 C (2.2 F)24 years13 of 100 (Routine)

Climate Trend

20 complete years, 1997 to 2025
Annual mean temperature at Somerset as warming stripes, 1997 to 2025 One stripe for each of 20 complete years at Somerset, 1997 to 2025. Blue stripes are years cooler than the station's own mean of 13.3 C (56.0 F); red stripes are warmer. The coolest year was 1997, at 12.1 C (53.8 F), and the warmest was 2024, at 14.2 C (57.6 F). The strongest colour marks a difference of 1.3 C (2.3 F). 1997: 12.1 C, -1.2 C from the station mean1998: 13.9 C, +0.5 C from the station mean2000: 12.5 C, -0.9 C from the station mean2004: 13.1 C, -0.3 C from the station mean2005: 13.1 C, -0.2 C from the station mean2010: 13.3 C, -0.1 C from the station mean2011: 13.6 C, +0.2 C from the station mean2012: 14.0 C, +0.6 C from the station mean2013: 12.6 C, -0.7 C from the station mean2014: 12.1 C, -1.2 C from the station mean2016: 13.8 C, +0.4 C from the station mean2017: 13.9 C, +0.5 C from the station mean2018: 13.4 C, 0.0 C from the station mean2019: 13.7 C, +0.4 C from the station mean2020: 13.8 C, +0.5 C from the station mean2021: 13.8 C, +0.4 C from the station mean2022: 12.9 C, -0.4 C from the station mean2023: 13.8 C, +0.4 C from the station mean2024: 14.2 C, +0.9 C from the station mean2025: 13.4 C, 0.0 C from the station mean1997200020052010201520202025
One stripe for each of 20 complete years at Somerset, 1997 to 2025. Blue stripes are years cooler than the station's own mean of 13.3 C (56.0 F); red stripes are warmer. The coolest year was 1997, at 12.1 C (53.8 F), and the warmest was 2024, at 14.2 C (57.6 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at Somerset as warming stripes, 1997 to 2025
YearAnnual mean temperatureDifference from the station mean
199712.1 C-1.24 C
199813.9 C+0.54 C
200012.5 C-0.86 C
200413.1 C-0.28 C
200513.1 C-0.24 C
201013.3 C-0.09 C
201113.6 C+0.23 C
201214.0 C+0.64 C
201312.6 C-0.74 C
201412.1 C-1.21 C
201613.8 C+0.45 C
201713.9 C+0.54 C
201813.4 C+0.03 C
201913.7 C+0.38 C
202013.8 C+0.48 C
202113.8 C+0.42 C
202212.9 C-0.41 C
202313.8 C+0.45 C
202414.2 C+0.88 C
202513.4 C+0.04 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1945 to 2026
Yearly extremes at Somerset: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.0 C (104.0 F)200736.1 C (97.0 F)32
Coldest night (TNn)-26.1 C (-15.0 F)1996-15.6 C (3.9 F)32
Wettest day (Rx1day)218.7 mm (8.6 in)199771.6 mm (2.8 in)64
Wettest five days (Rx5day)246.3 mm (9.7 in)1946101.1 mm (4.0 in)63
Longest dry spell (CDD)44 days200019 days62

Hottest day (TXx)

Hottest day (TXx) at Somerset by year The hottest day of the year at Somerset, 1945 to 2026. The record is 40.0 C (104.0 F) in 2007, marked on the chart; the median year is 36.1 C (97.0 F). 32343638401960198020002020Record: 40.0 C (104.0 F) in 2007
The hottest day of the year at Somerset, 1945 to 2026. The record is 40.0 C (104.0 F) in 2007, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Somerset by year
YearHottest day (TXx)
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
199536.1 C (97.0 F)
199635.0 C (95.0 F)
199736.7 C (98.1 F)
199836.1 C (97.0 F)
199939.4 C (102.9 F)
200033.9 C (93.0 F)
200135.0 C (95.0 F)
200237.8 C (100.0 F)
200335.6 C (96.1 F)
200432.8 C (91.0 F)
200535.6 C (96.1 F)
200637.2 C (99.0 F)
200740.0 C (104.0 F)
200835.0 C (95.0 F)
200934.4 C (93.9 F)
201038.3 C (100.9 F)
201137.8 C (100.0 F)
201238.9 C (102.0 F)
201334.4 C (93.9 F)
201434.4 C (93.9 F)
201534.4 C (93.9 F)
201636.7 C (98.1 F)
201736.7 C (98.1 F)
201835.0 C (95.0 F)
201936.7 C (98.1 F)
202036.7 C (98.1 F)
202137.2 C (99.0 F)
202234.4 C (93.9 F)
202335.6 C (96.1 F)
202438.3 C (100.9 F)
202535.0 C (95.0 F)
202638.9 C (102.0 F)

Coldest night (TNn)

Coldest night (TNn) at Somerset by year The coldest night of the year at Somerset, 1945 to 2026. The record is -26.1 C (-15.0 F) in 1996, marked on the chart; the median year is -15.6 C (3.9 F). -30-25-20-15-10-51960198020002020Record: -26.1 C (-15.0 F) in 1996
The coldest night of the year at Somerset, 1945 to 2026. The record is -26.1 C (-15.0 F) in 1996, marked on the chart; the median year is -15.6 C (3.9 F).
Coldest night (TNn) at Somerset by year
YearColdest night (TNn)
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1995-11.1 C (12.0 F)
1996-26.1 C (-15.0 F)
1997-19.4 C (-2.9 F)
1998-13.3 C (8.1 F)
1999-15.6 C (3.9 F)
2000-17.8 C (0.0 F)
2001-12.8 C (9.0 F)
2002-16.1 C (3.0 F)
2003-15.6 C (3.9 F)
2004-18.9 C (-2.0 F)
2005-16.1 C (3.0 F)
2006-12.8 C (9.0 F)
2007-14.4 C (6.1 F)
2008-13.9 C (7.0 F)
2009-20.6 C (-5.1 F)
2010-16.7 C (1.9 F)
2011-14.4 C (6.1 F)
2012-10.6 C (12.9 F)
2013-14.4 C (6.1 F)
2014-19.4 C (-2.9 F)
2015-17.2 C (1.0 F)
2016-15.0 C (5.0 F)
2017-15.6 C (3.9 F)
2018-20.0 C (-4.0 F)
2019-15.0 C (5.0 F)
2020-11.7 C (10.9 F)
2021-9.4 C (15.1 F)
2022-15.6 C (3.9 F)
2023-10.6 C (12.9 F)
2024-12.8 C (9.0 F)
2025-15.6 C (3.9 F)
2026-16.1 C (3.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Somerset by year The wettest day of the year at Somerset, 1945 to 2026. The record is 218.7 mm (8.6 in) in 1997, marked on the chart; the median year is 71.6 mm (2.8 in). 0501001502002501960198020002020Record: 218.7 mm (8.6 in) in 1997
The wettest day of the year at Somerset, 1945 to 2026. The record is 218.7 mm (8.6 in) in 1997, marked on the chart; the median year is 71.6 mm (2.8 in).
Wettest day (Rx1day) at Somerset by year
YearWettest day (Rx1day)
194558.4 mm (2.3 in)
194653.3 mm (2.1 in)
194747.0 mm (1.9 in)
194875.7 mm (3.0 in)
194949.5 mm (1.9 in)
195078.7 mm (3.1 in)
195191.9 mm (3.6 in)
195253.3 mm (2.1 in)
195347.5 mm (1.9 in)
195498.6 mm (3.9 in)
1955111.3 mm (4.4 in)
195644.7 mm (1.8 in)
195773.2 mm (2.9 in)
195862.5 mm (2.5 in)
195953.1 mm (2.1 in)
196055.9 mm (2.2 in)
196152.1 mm (2.1 in)
196273.7 mm (2.9 in)
196353.8 mm (2.1 in)
196447.5 mm (1.9 in)
196553.3 mm (2.1 in)
196676.5 mm (3.0 in)
196756.6 mm (2.2 in)
196884.1 mm (3.3 in)
196955.4 mm (2.2 in)
197039.4 mm (1.6 in)
197152.6 mm (2.1 in)
1972202.7 mm (8.0 in)
1973107.2 mm (4.2 in)
197448.8 mm (1.9 in)
197543.7 mm (1.7 in)
197662.2 mm (2.4 in)
199578.2 mm (3.1 in)
199672.4 mm (2.9 in)
1997218.7 mm (8.6 in)
199872.1 mm (2.8 in)
199977.5 mm (3.1 in)
200047.5 mm (1.9 in)
200175.2 mm (3.0 in)
200234.8 mm (1.4 in)
2003115.6 mm (4.6 in)
200445.0 mm (1.8 in)
200581.3 mm (3.2 in)
200681.3 mm (3.2 in)
200763.8 mm (2.5 in)
200879.2 mm (3.1 in)
200947.5 mm (1.9 in)
201073.9 mm (2.9 in)
201181.8 mm (3.2 in)
201248.8 mm (1.9 in)
2013104.6 mm (4.1 in)
201480.0 mm (3.1 in)
2015105.9 mm (4.2 in)
201642.7 mm (1.7 in)
201771.1 mm (2.8 in)
201879.8 mm (3.1 in)
201954.9 mm (2.2 in)
202080.5 mm (3.2 in)
2021101.9 mm (4.0 in)
202259.7 mm (2.4 in)
202376.2 mm (3.0 in)
202477.5 mm (3.1 in)
202595.3 mm (3.8 in)
202641.1 mm (1.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Somerset by year The wettest five days of the year at Somerset, 1945 to 2026. The record is 246.3 mm (9.7 in) in 1946, marked on the chart; the median year is 101.1 mm (4.0 in). 501001502002501960198020002020Record: 246.3 mm (9.7 in) in 1946
The wettest five days of the year at Somerset, 1945 to 2026. The record is 246.3 mm (9.7 in) in 1946, marked on the chart; the median year is 101.1 mm (4.0 in).
Wettest five days (Rx5day) at Somerset by year
YearWettest five days (Rx5day)
1945n/a
1946246.3 mm (9.7 in)
194771.1 mm (2.8 in)
1948149.1 mm (5.9 in)
1949158.0 mm (6.2 in)
1950126.4 mm (5.0 in)
1951141.7 mm (5.6 in)
195291.2 mm (3.6 in)
195367.5 mm (2.7 in)
1954119.7 mm (4.7 in)
1955151.2 mm (6.0 in)
195689.6 mm (3.5 in)
195795.1 mm (3.7 in)
1958101.1 mm (4.0 in)
195998.5 mm (3.9 in)
196083.1 mm (3.3 in)
196168.9 mm (2.7 in)
196289.4 mm (3.5 in)
196363.3 mm (2.5 in)
196484.0 mm (3.3 in)
196573.7 mm (2.9 in)
1966129.1 mm (5.1 in)
1967120.4 mm (4.7 in)
196886.9 mm (3.4 in)
1969105.7 mm (4.2 in)
197095.1 mm (3.7 in)
197192.0 mm (3.6 in)
1972246.2 mm (9.7 in)
1973158.5 mm (6.2 in)
1974100.1 mm (3.9 in)
1975148.9 mm (5.9 in)
197676.9 mm (3.0 in)
199578.2 mm (3.1 in)
1996154.2 mm (6.1 in)
1997220.3 mm (8.7 in)
1998132.4 mm (5.2 in)
1999103.1 mm (4.1 in)
200071.6 mm (2.8 in)
2001111.0 mm (4.4 in)
200261.9 mm (2.4 in)
2003148.7 mm (5.9 in)
200491.1 mm (3.6 in)
2005154.0 mm (6.1 in)
2006122.4 mm (4.8 in)
200793.0 mm (3.7 in)
2008120.9 mm (4.8 in)
200978.5 mm (3.1 in)
2010190.7 mm (7.5 in)
2011114.8 mm (4.5 in)
201284.3 mm (3.3 in)
2013178.1 mm (7.0 in)
201494.8 mm (3.7 in)
2015140.2 mm (5.5 in)
201661.5 mm (2.4 in)
201774.2 mm (2.9 in)
2018151.8 mm (6.0 in)
201972.9 mm (2.9 in)
2020135.1 mm (5.3 in)
2021119.7 mm (4.7 in)
202272.9 mm (2.9 in)
202378.2 mm (3.1 in)
2024126.3 mm (5.0 in)
2025180.2 mm (7.1 in)
202687.3 mm (3.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Somerset by year The longest dry spell of the year at Somerset, 1945 to 2026. The record is 44 days in 2000, marked on the chart; the median year is 19 days. 10203040501960198020002020Record: 44 days in 2000
The longest dry spell of the year at Somerset, 1945 to 2026. The record is 44 days in 2000, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Somerset by year
YearLongest dry spell (CDD)
1945n/a
1946n/a
194716 days
194815 days
194914 days
195017 days
195122 days
195223 days
195320 days
195416 days
195528 days
195618 days
195723 days
195817 days
195923 days
196016 days
196114 days
196221 days
196326 days
196419 days
196519 days
196628 days
196719 days
196815 days
196923 days
197029 days
197120 days
197211 days
197320 days
197423 days
197515 days
197629 days
199518 days
199613 days
199715 days
199824 days
199922 days
200044 days
200134 days
200219 days
200317 days
200427 days
200519 days
200618 days
200734 days
200818 days
200917 days
201026 days
201117 days
201227 days
201315 days
201417 days
201517 days
201614 days
201724 days
201814 days
201916 days
202014 days
202116 days
202217 days
202319 days
202436 days
202513 days
202620 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

20 years with a frost

Across 20 years with a frost, the median last spring frost at Somerset falls on 21 April and the median first autumn frost on 25 October, which leaves a median of 186 days between them.

Frost dates and growing season at Somerset
MeasureMedian, all yearsEarliest periodRecent period (1997 to 2025)Recent against earliestFitted trend
Last spring frost21 Apriln/a21 Apriln/an/a
First autumn frost25 Octobern/a25 Octobern/an/a
Growing days186 daysn/a186 daysn/an/a

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

46 years, 1948 to 2025

A day with at least 64.4 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 179.6 mm (7.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Somerset: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years64.4 mm (2.5 in)
5 years87.0 mm (3.4 in)
10 years104.8 mm (4.1 in)
25 years131.2 mm (5.2 in)
50 years153.9 mm (6.1 in)Longer than the 46 years of record
100 years179.6 mm (7.1 in)Longer than the 46 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, 46 years of values from 1948 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: 218.7 mm (8.6 in) in 1997; 115.6 mm (4.6 in) in 2003; 111.3 mm (4.4 in) in 1955.

Download the Data

  • Data for Somerset standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Somerset threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-17).