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Built 2026-10-15 (15 October 2026)

Mill Gap Weather Records (USC00445595)

Record envelope, standing records and threshold days for Mill Gap (USC00445595), Virginia, United States, with 51 years of record.

Key Facts for Mill Gap

  • Mill Gap (USC00445595) is a weather station in Virginia, United States at 38.31 latitude and -79.72 longitude, 736 m (2,416 ft) above sea level.
  • The station reports from 1976 to 2026, 51 years of record.
  • 1,464 records set at Mill Gap still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Mill Gap set a daily record precipitation of 37.8 mm (1.5 in) on 17 August 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, 38.31 latitude, -79.72 longitude.
  • Elevation: 736 m (2,416 ft).
  • Period of record: 1976 to 2026, 51 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

39 days at or beyond a record
Daily record high and record low at Mill Gap, with 2026 drawn through them The band shows the record high and record low for each calendar day at Mill Gap. The lines show the 2026 daily maximum and minimum. 39 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 Mill Gap. The lines show the 2026 daily maximum and minimum. 39 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Mill Gap, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan21.1 C (70.0 F)-26.7 C (-16.1 F)12.8 C (55.0 F)-18.9 C (-2.0 F)
Feb22.8 C (73.0 F)-26.7 C (-16.1 F)17.2 C (63.0 F)-20.6 C (-5.1 F)
Mar29.4 C (84.9 F)-26.1 C (-15.0 F)27.8 C (82.0 F)-11.1 C (12.0 F)
Apr30.0 C (86.0 F)-11.7 C (10.9 F)30.0 C (86.0 F)-9.4 C (15.1 F)
May31.7 C (89.1 F)-5.6 C (21.9 F)31.7 C (89.1 F)-3.9 C (25.0 F)
Jun33.9 C (93.0 F)0.0 C (32.0 F)30.0 C (86.0 F)2.8 C (37.0 F)
Jul35.6 C (96.1 F)3.3 C (37.9 F)32.8 C (91.0 F)10.0 C (50.0 F)
Aug33.9 C (93.0 F)2.2 C (36.0 F)28.9 C (84.0 F)6.1 C (43.0 F)
Sep33.3 C (91.9 F)-1.7 C (28.9 F)32.2 C (90.0 F)0.0 C (32.0 F)
Oct31.7 C (89.1 F)-10.6 C (12.9 F)27.2 C (81.0 F)1.1 C (34.0 F)
Nov25.6 C (78.1 F)-15.0 C (5.0 F)n/an/a
Dec22.2 C (72.0 F)-21.7 C (-7.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Mill Gap by the year they were set 1,464 records at Mill Gap still stand. 2018 holds the most, with 84. 02550751001998: 211999: 442000: 502001: 452002: 472003: 302004: 542005: 412006: 512007: 612008: 352009: 422010: 502011: 552012: 602013: 552014: 612015: 652016: 532017: 682018: 842019: 432020: 522021: 402022: 422023: 632024: 582025: 542026: 401998200120042007201020132016201920222025
1,464 records at Mill Gap still stand. 2018 holds the most, with 84.
Standing records at Mill Gap by the year they were set
Year setStanding records
199821
199944
200050
200145
200247
200330
200454
200541
200651
200761
200835
200942
201050
201155
201260
201355
201461
201565
201653
201768
201884
201943
202052
202140
202242
202363
202458
202554
202640

All-Time Record Progression

4 new records
When Mill Gap set new all-time records 4 all-time records were set at Mill Gap between 19 December 2009 and 31 December 2009. Each dot is a new record. Record daily snowfallRecord snow depth19 December 2009: Record daily snowfall 45.7 cm (18.0 in)19 December 2009: Record snow depth 45.7 cm (18.0 in)20 December 2009: Record snow depth 61.0 cm (24.0 in)31 December 2009: Record snow depth 66.0 cm (26.0 in)2010
4 all-time records were set at Mill Gap between 19 December 2009 and 31 December 2009. Each dot is a new record.
When Mill Gap set new all-time records
DateKindDetail
2009-12-19Record daily snowfallRecord daily snowfall 45.7 cm (18.0 in)
2009-12-19Record snow depthRecord snow depth 45.7 cm (18.0 in)
2009-12-20Record snow depthRecord snow depth 61.0 cm (24.0 in)
2009-12-31Record snow depthRecord snow depth 66.0 cm (26.0 in)

Wettest Day of Each Month

Nov: 158.8 mm (6.3 in)
Record daily precipitation for each month at Mill Gap The wettest day on record for each calendar month at Mill Gap. The most was 158.8 mm (6.3 in) on 5 November 1985. 050100150200 Jan: 58.9 mm (2.3 in), 31 January 2013 Jan Feb: 50.8 mm (2.0 in), 17 February 2023 Feb Mar: 66.0 mm (2.6 in), 21 March 1984 Mar Apr: 80.8 mm (3.2 in), 16 April 2018 Apr May: 67.8 mm (2.7 in), 8 May 1994 May Jun: 102.6 mm (4.0 in), 23 June 1995 Jun Jul: 68.3 mm (2.7 in), 18 July 1994 Jul Aug: 64.5 mm (2.5 in), 9 August 1991 Aug Sep: 81.3 mm (3.2 in), 6 September 2011 Sep Oct: 80.5 mm (3.2 in), 27 October 1981 Oct Nov: 158.8 mm (6.3 in), 5 November 1985 Nov Dec: 58.4 mm (2.3 in), 5 December 1993 Dec
The wettest day on record for each calendar month at Mill Gap. The most was 158.8 mm (6.3 in) on 5 November 1985.
Record daily precipitation for each month at Mill Gap
MonthRecord daily precipitation (mm)Date
Jan58.9 mm (2.3 in)31 January 2013
Feb50.8 mm (2.0 in)17 February 2023
Mar66.0 mm (2.6 in)21 March 1984
Apr80.8 mm (3.2 in)16 April 2018
May67.8 mm (2.7 in)8 May 1994
Jun102.6 mm (4.0 in)23 June 1995
Jul68.3 mm (2.7 in)18 July 1994
Aug64.5 mm (2.5 in)9 August 1991
Sep81.3 mm (3.2 in)6 September 2011
Oct80.5 mm (3.2 in)27 October 1981
Nov158.8 mm (6.3 in)5 November 1985
Dec58.4 mm (2.3 in)5 December 1993

Period of Record Coverage

1998 to 2026
Days with data per year at Mill Gap 29 years of record at Mill Gap, 1998 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1998, 2010, 2026. 1998: 117 of 365 days1999: 352 of 365 days2000: 347 of 366 days2001: 354 of 365 days2002: 349 of 365 days2003: 337 of 365 days2004: 351 of 366 days2005: 350 of 365 days2006: 342 of 365 days2007: 343 of 365 days2008: 342 of 366 days2009: 348 of 365 days2010: 284 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 363 of 365 days2015: 365 of 365 days2016: 365 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 284 of 365 days200020052010201520202025
29 years of record at Mill Gap, 1998 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1998, 2010, 2026.
Days with data per year at Mill Gap
YearDays with dataShare of yearComplete
199811732%No
199935296%Yes
200034795%Yes
200135497%Yes
200234996%Yes
200333792%Yes
200435196%Yes
200535096%Yes
200634294%Yes
200734394%Yes
200834293%Yes
200934895%Yes
201028478%No
2011365100%Yes
2012366100%Yes
2013365100%Yes
201436399%Yes
2015365100%Yes
2016365100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628478%No

Latest Records

20
Latest records at Mill Gap
DateStationRecordValueBeat old record byOld record stoodSignificance
17 August 2026Mill Gap, USdaily rain (Provisional)37.8 mm (1.5 in)19.3 mm (0.8 in)32 years33 of 100 (Routine)
26 May 2026Mill Gap, USdaily rain30.0 mm (1.2 in)0.5 mm (0.02 in)16 years10 of 100 (Routine)
23 May 2026Mill Gap, USdaily rain27.4 mm (1.1 in)1.2 mm (0.05 in)12 years9 of 100 (Routine)
22 May 2026Mill Gap, USdaily rain34.8 mm (1.4 in)1.8 mm (0.07 in)43 years18 of 100 (Routine)
20 February 2026Mill Gap, USdaily rain14.2 mm (0.6 in)5.3 mm (0.21 in)7 years13 of 100 (Routine)
11 February 2026Mill Gap, USdaily snow depth7.6 cm (3.0 in)2.5 cm (1.0 in)20 years13 of 100 (Routine)
10 February 2026Mill Gap, USdaily snow depth10.2 cm (4.0 in)2.6 cm (1.0 in)8 years9 of 100 (Routine)
9 February 2026Mill Gap, USdaily snow depth12.7 cm (5.0 in)5.1 cm (2.0 in)8 years12 of 100 (Routine)
8 February 2026Mill Gap, USdaily snow depth12.7 cm (5.0 in)5.1 cm (2.0 in)8 years12 of 100 (Routine)
7 February 2026Mill Gap, USdaily snow depth (Tie)12.7 cm (5.0 in)tie19 years2 of 100 (Routine)
6 February 2026Mill Gap, USdaily snow depth12.7 cm (5.0 in)7.6 cm (3.0 in)4 years14 of 100 (Routine)
5 February 2026Mill Gap, USdaily snow depth (Tie)12.7 cm (5.0 in)tie8 years1 of 100 (Routine)
4 February 2026Mill Gap, USdaily snow depth15.2 cm (6.0 in)5.0 cm (2.0 in)4 years11 of 100 (Routine)
3 February 2026Mill Gap, USdaily snow depth12.7 cm (5.0 in)2.5 cm (1.0 in)4 years8 of 100 (Routine)
2 February 2026Mill Gap, USdaily snow depth12.7 cm (5.0 in)2.5 cm (1.0 in)4 years8 of 100 (Routine)
31 January 2026Mill Gap, USdaily snow depth12.7 cm (5.0 in)2.5 cm (1.0 in)42 years21 of 100 (Routine)
30 January 2026Mill Gap, USdaily snow depth12.7 cm (5.0 in)2.5 cm (1.0 in)10 years12 of 100 (Routine)
29 January 2026Mill Gap, USdaily snow depth12.7 cm (5.0 in)2.5 cm (1.0 in)15 years13 of 100 (Routine)
28 January 2026Mill Gap, USdaily snow depth12.7 cm (5.0 in)2.5 cm (1.0 in)47 years23 of 100 (Routine)
27 January 2026Mill Gap, USdaily snow depth (Tie)12.7 cm (5.0 in)tie15 years2 of 100 (Routine)

Climate Trend

24 complete years, 2000 to 2025
Annual mean temperature at Mill Gap as warming stripes, 2000 to 2025 One stripe for each of 24 complete years at Mill Gap, 2000 to 2025. Blue stripes are years cooler than the station's own mean of 9.3 C (48.8 F); red stripes are warmer. The coolest year was 2014, at 7.9 C (46.2 F), and the warmest was 2024, at 10.3 C (50.5 F). The strongest colour marks a difference of 1.5 C (2.7 F). 2000: 8.8 C, -0.5 C from the station mean2001: 9.1 C, -0.2 C from the station mean2002: 9.4 C, +0.1 C from the station mean2004: 9.4 C, 0.0 C from the station mean2005: 9.2 C, -0.2 C from the station mean2006: 9.4 C, +0.1 C from the station mean2007: 9.6 C, +0.2 C from the station mean2008: 8.8 C, -0.5 C from the station mean2009: 8.7 C, -0.6 C from the station mean2011: 9.5 C, +0.2 C from the station mean2012: 9.8 C, +0.4 C from the station mean2013: 8.5 C, -0.8 C from the station mean2014: 7.9 C, -1.4 C from the station mean2015: 9.2 C, -0.1 C from the station mean2016: 9.5 C, +0.2 C from the station mean2017: 9.6 C, +0.3 C from the station mean2018: 9.5 C, +0.2 C from the station mean2019: 9.9 C, +0.6 C from the station mean2020: 9.9 C, +0.6 C from the station mean2021: 9.7 C, +0.3 C from the station mean2022: 9.0 C, -0.4 C from the station mean2023: 9.7 C, +0.4 C from the station mean2024: 10.3 C, +0.9 C from the station mean2025: 9.4 C, +0.1 C from the station mean200020052010201520202025
One stripe for each of 24 complete years at Mill Gap, 2000 to 2025. Blue stripes are years cooler than the station's own mean of 9.3 C (48.8 F); red stripes are warmer. The coolest year was 2014, at 7.9 C (46.2 F), and the warmest was 2024, at 10.3 C (50.5 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Mill Gap as warming stripes, 2000 to 2025
YearAnnual mean temperatureDifference from the station mean
20008.8 C-0.54 C
20019.1 C-0.19 C
20029.4 C+0.11 C
20049.4 C+0.03 C
20059.2 C-0.18 C
20069.4 C+0.10 C
20079.6 C+0.22 C
20088.8 C-0.53 C
20098.7 C-0.59 C
20119.5 C+0.20 C
20129.8 C+0.42 C
20138.5 C-0.81 C
20147.9 C-1.43 C
20159.2 C-0.11 C
20169.5 C+0.20 C
20179.6 C+0.28 C
20189.5 C+0.19 C
20199.9 C+0.58 C
20209.9 C+0.61 C
20219.7 C+0.34 C
20229.0 C-0.37 C
20239.7 C+0.35 C
202410.3 C+0.94 C
20259.4 C+0.07 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

1976 to 2026
Yearly extremes at Mill Gap: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.6 C (96.1 F)201132.2 C (90.0 F)29
Coldest night (TNn)-26.7 C (-16.1 F)2014-20.0 C (-4.0 F)29
Wettest day (Rx1day)158.8 mm (6.3 in)198558.4 mm (2.3 in)51
Wettest five days (Rx5day)218.6 mm (8.6 in)198588.7 mm (3.5 in)51
Longest dry spell (CDD)28 days199516 days51

Hottest day (TXx)

Hottest day (TXx) at Mill Gap by year The hottest day of the year at Mill Gap, 1976 to 2026. The record is 35.6 C (96.1 F) in 2011, marked on the chart; the median year is 32.2 C (90.0 F). 283032343619801990200020102020Record: 35.6 C (96.1 F) in 2011
The hottest day of the year at Mill Gap, 1976 to 2026. The record is 35.6 C (96.1 F) in 2011, marked on the chart; the median year is 32.2 C (90.0 F).
Hottest day (TXx) at Mill Gap by year
YearHottest day (TXx)
1976n/a
1977n/a
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
199831.7 C (89.1 F)
199933.3 C (91.9 F)
200030.6 C (87.1 F)
200131.1 C (88.0 F)
200232.2 C (90.0 F)
200330.6 C (87.1 F)
200431.1 C (88.0 F)
200531.1 C (88.0 F)
200632.2 C (90.0 F)
200732.8 C (91.0 F)
200830.6 C (87.1 F)
200929.4 C (84.9 F)
201033.3 C (91.9 F)
201135.6 C (96.1 F)
201234.4 C (93.9 F)
201330.0 C (86.0 F)
201430.6 C (87.1 F)
201529.4 C (84.9 F)
201632.2 C (90.0 F)
201730.6 C (87.1 F)
201831.7 C (89.1 F)
201932.8 C (91.0 F)
202032.2 C (90.0 F)
202133.9 C (93.0 F)
202231.7 C (89.1 F)
202332.2 C (90.0 F)
202433.3 C (91.9 F)
202532.2 C (90.0 F)
202632.8 C (91.0 F)

Coldest night (TNn)

Coldest night (TNn) at Mill Gap by year The coldest night of the year at Mill Gap, 1976 to 2026. The record is -26.7 C (-16.1 F) in 2014, marked on the chart; the median year is -20.0 C (-4.0 F). -30-25-20-15-1019801990200020102020Record: -26.7 C (-16.1 F) in 2014
The coldest night of the year at Mill Gap, 1976 to 2026. The record is -26.7 C (-16.1 F) in 2014, marked on the chart; the median year is -20.0 C (-4.0 F).
Coldest night (TNn) at Mill Gap by year
YearColdest night (TNn)
1976n/a
1977n/a
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998-15.6 C (3.9 F)
1999-18.9 C (-2.0 F)
2000-20.6 C (-5.1 F)
2001-18.3 C (-0.9 F)
2002-18.9 C (-2.0 F)
2003-21.7 C (-7.1 F)
2004-18.3 C (-0.9 F)
2005-22.8 C (-9.0 F)
2006-17.8 C (0.0 F)
2007-19.4 C (-2.9 F)
2008-18.3 C (-0.9 F)
2009-23.9 C (-11.0 F)
2010-20.6 C (-5.1 F)
2011-17.8 C (0.0 F)
2012-14.4 C (6.1 F)
2013-20.0 C (-4.0 F)
2014-26.7 C (-16.1 F)
2015-26.7 C (-16.1 F)
2016-22.8 C (-9.0 F)
2017-22.2 C (-8.0 F)
2018-22.8 C (-9.0 F)
2019-20.0 C (-4.0 F)
2020-16.7 C (1.9 F)
2021-18.3 C (-0.9 F)
2022-25.6 C (-14.1 F)
2023-15.6 C (3.9 F)
2024-20.6 C (-5.1 F)
2025-26.7 C (-16.1 F)
2026-20.6 C (-5.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Mill Gap by year The wettest day of the year at Mill Gap, 1976 to 2026. The record is 158.8 mm (6.3 in) in 1985, marked on the chart; the median year is 58.4 mm (2.3 in). 05010015020019801990200020102020Record: 158.8 mm (6.3 in) in 1985
The wettest day of the year at Mill Gap, 1976 to 2026. The record is 158.8 mm (6.3 in) in 1985, marked on the chart; the median year is 58.4 mm (2.3 in).
Wettest day (Rx1day) at Mill Gap by year
YearWettest day (Rx1day)
197661.0 mm (2.4 in)
197758.2 mm (2.3 in)
197857.9 mm (2.3 in)
197955.9 mm (2.2 in)
198061.0 mm (2.4 in)
198180.5 mm (3.2 in)
198258.4 mm (2.3 in)
198350.3 mm (2.0 in)
198466.0 mm (2.6 in)
1985158.8 mm (6.3 in)
198650.8 mm (2.0 in)
198765.8 mm (2.6 in)
198840.6 mm (1.6 in)
198969.9 mm (2.8 in)
199064.5 mm (2.5 in)
199164.5 mm (2.5 in)
199250.8 mm (2.0 in)
199358.4 mm (2.3 in)
199468.3 mm (2.7 in)
1995102.6 mm (4.0 in)
199675.2 mm (3.0 in)
199764.5 mm (2.5 in)
199855.4 mm (2.2 in)
199944.7 mm (1.8 in)
200060.7 mm (2.4 in)
200150.3 mm (2.0 in)
200248.3 mm (1.9 in)
200367.8 mm (2.7 in)
200474.7 mm (2.9 in)
200565.8 mm (2.6 in)
200658.4 mm (2.3 in)
200752.1 mm (2.1 in)
200852.8 mm (2.1 in)
200950.8 mm (2.0 in)
201058.4 mm (2.3 in)
201181.3 mm (3.2 in)
201250.8 mm (2.0 in)
201358.9 mm (2.3 in)
201455.1 mm (2.2 in)
201579.2 mm (3.1 in)
201666.3 mm (2.6 in)
201766.8 mm (2.6 in)
201880.8 mm (3.2 in)
201954.1 mm (2.1 in)
202053.3 mm (2.1 in)
202148.0 mm (1.9 in)
202254.4 mm (2.1 in)
202350.8 mm (2.0 in)
202459.4 mm (2.3 in)
202548.5 mm (1.9 in)
202648.3 mm (1.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mill Gap by year The wettest five days of the year at Mill Gap, 1976 to 2026. The record is 218.6 mm (8.6 in) in 1985, marked on the chart; the median year is 88.7 mm (3.5 in). 5010015020025019801990200020102020Record: 218.6 mm (8.6 in) in 1985
The wettest five days of the year at Mill Gap, 1976 to 2026. The record is 218.6 mm (8.6 in) in 1985, marked on the chart; the median year is 88.7 mm (3.5 in).
Wettest five days (Rx5day) at Mill Gap by year
YearWettest five days (Rx5day)
1976114.1 mm (4.5 in)
197789.4 mm (3.5 in)
197870.3 mm (2.8 in)
197974.0 mm (2.9 in)
198083.6 mm (3.3 in)
1981118.1 mm (4.6 in)
198291.9 mm (3.6 in)
1983123.0 mm (4.8 in)
198488.1 mm (3.5 in)
1985218.6 mm (8.6 in)
198678.7 mm (3.1 in)
198787.9 mm (3.5 in)
198864.1 mm (2.5 in)
198993.3 mm (3.7 in)
199082.8 mm (3.3 in)
199185.0 mm (3.3 in)
199276.8 mm (3.0 in)
199361.7 mm (2.4 in)
1994125.3 mm (4.9 in)
1995115.3 mm (4.5 in)
1996115.6 mm (4.6 in)
199768.6 mm (2.7 in)
199887.4 mm (3.4 in)
199977.7 mm (3.1 in)
200096.2 mm (3.8 in)
2001127.7 mm (5.0 in)
2002104.9 mm (4.1 in)
200397.5 mm (3.8 in)
2004104.7 mm (4.1 in)
200576.2 mm (3.0 in)
2006163.8 mm (6.4 in)
2007103.4 mm (4.1 in)
200885.5 mm (3.4 in)
2009117.9 mm (4.6 in)
2010117.5 mm (4.6 in)
2011139.8 mm (5.5 in)
201282.0 mm (3.2 in)
201385.8 mm (3.4 in)
201460.7 mm (2.4 in)
201597.5 mm (3.8 in)
2016169.6 mm (6.7 in)
201772.6 mm (2.9 in)
201884.1 mm (3.3 in)
201962.0 mm (2.4 in)
202092.7 mm (3.6 in)
2021100.3 mm (3.9 in)
202280.8 mm (3.2 in)
202377.7 mm (3.1 in)
202486.8 mm (3.4 in)
202588.7 mm (3.5 in)
2026108.0 mm (4.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mill Gap by year The longest dry spell of the year at Mill Gap, 1976 to 2026. The record is 28 days in 1995, marked on the chart; the median year is 16 days. 010203019801990200020102020Record: 28 days in 1995
The longest dry spell of the year at Mill Gap, 1976 to 2026. The record is 28 days in 1995, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Mill Gap by year
YearLongest dry spell (CDD)
19766 days
197717 days
197814 days
197910 days
198014 days
198119 days
198221 days
198325 days
198414 days
198522 days
198621 days
198713 days
198818 days
198912 days
199012 days
199121 days
199217 days
199317 days
199423 days
199528 days
19969 days
199719 days
199814 days
199910 days
200021 days
200121 days
200217 days
200310 days
200414 days
200526 days
200612 days
200720 days
200814 days
200911 days
201011 days
201116 days
201219 days
201313 days
201419 days
201517 days
201616 days
201716 days
20189 days
201914 days
202012 days
202121 days
202212 days
202320 days
202425 days
202514 days
202612 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

24 years with a frost

Across 24 years with a frost, the median last spring frost at Mill Gap falls on 16 May and the median first autumn frost on 1 October, which leaves a median of 137 days between them.

Frost dates and growing season at Mill Gap
MeasureMedian, all yearsEarliest periodRecent period (2000 to 2025)Recent against earliestFitted trend
Last spring frost16 Mayn/a16 Mayn/an/a
First autumn frost1 Octobern/a1 Octobern/an/a
Growing days137 daysn/a137 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

48 years, 1977 to 2025

A day with at least 58.1 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 131.6 mm (5.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Mill Gap: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years58.1 mm (2.3 in)
5 years70.7 mm (2.8 in)
10 years81.2 mm (3.2 in)
25 years97.9 mm (3.9 in)
50 years113.3 mm (4.5 in)Longer than the 48 years of record
100 years131.6 mm (5.2 in)Longer than the 48 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, 48 years of values from 1977 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: 158.8 mm (6.3 in) in 1985; 102.6 mm (4.0 in) in 1995; 81.3 mm (3.2 in) in 2011.

Download the Data

  • Data for Mill Gap standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Mill Gap 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).