Built 2026-10-19 (19 October 2026)

Midway Valley Weather Records (USS0012M23S)

Record envelope, standing records and threshold days for Midway Valley (USS0012M23S), Utah, United States, with 47 years of record.

Key Facts for Midway Valley

  • Midway Valley (USS0012M23S) is a weather station in Utah, United States at 37.57 latitude and -112.84 longitude, 2,987 m (9,800 ft) above sea level.
  • The station reports from 1980 to 2026, 47 years of record.
  • 1,464 records set at Midway Valley still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Midway Valley tied a daily record precipitation of 27.9 mm (1.1 in) on 11 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Utah, United States, 37.57 latitude, -112.84 longitude.
  • Elevation: 2,987 m (9,800 ft).
  • Period of record: 1980 to 2026, 47 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

20 days at or beyond a record
Daily record high and record low at Midway Valley, with 2026 drawn through them The band shows the record high and record low for each calendar day at Midway Valley. The lines show the 2026 daily maximum and minimum. 20 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 Midway Valley. The lines show the 2026 daily maximum and minimum. 20 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Midway Valley, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan12.1 C (53.8 F)-28.5 C (-19.3 F)7.8 C (46.0 F)-17.4 C (0.7 F)
Feb15.3 C (59.5 F)-26.7 C (-16.1 F)9.8 C (49.6 F)-22.1 C (-7.8 F)
Mar18.3 C (64.9 F)-22.9 C (-9.2 F)18.3 C (64.9 F)-12.6 C (9.3 F)
Apr19.7 C (67.5 F)-21.5 C (-6.7 F)12.1 C (53.8 F)-13.4 C (7.9 F)
May22.6 C (72.7 F)-13.3 C (8.1 F)19.1 C (66.4 F)-7.6 C (18.3 F)
Jun27.4 C (81.3 F)-6.7 C (19.9 F)23.0 C (73.4 F)-0.4 C (31.3 F)
Jul27.2 C (81.0 F)-0.9 C (30.4 F)26.2 C (79.2 F)-0.9 C (30.4 F)
Aug27.2 C (81.0 F)-1.4 C (29.5 F)24.9 C (76.8 F)3.2 C (37.8 F)
Sep25.7 C (78.3 F)-9.1 C (15.6 F)21.0 C (69.8 F)-1.1 C (30.0 F)
Oct20.2 C (68.4 F)-18.9 C (-2.0 F)18.2 C (64.8 F)-4.6 C (23.7 F)
Nov16.8 C (62.2 F)-22.5 C (-8.5 F)n/an/a
Dec12.6 C (54.7 F)-29.8 C (-21.6 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Midway Valley by the year they were set 1,464 records at Midway Valley still stand. 2015 holds the most, with 81. 02550751002003: 332004: 622005: 622006: 672007: 662008: 632009: 622010: 722011: 632012: 532013: 722014: 402015: 812016: 622017: 632018: 652019: 522020: 742021: 692022: 682023: 572024: 572025: 522026: 4920032006200920122015201820212024
1,464 records at Midway Valley still stand. 2015 holds the most, with 81.
Standing records at Midway Valley by the year they were set
Year setStanding records
200333
200462
200562
200667
200766
200863
200962
201072
201163
201253
201372
201440
201581
201662
201763
201865
201952
202074
202169
202268
202357
202457
202552
202649

Wettest Day of Each Month

Oct: 132.1 mm (5.2 in)
Record daily precipitation for each month at Midway Valley The wettest day on record for each calendar month at Midway Valley. The most was 132.1 mm (5.2 in) on 20 October 2004. 050100150 Jan: 91.4 mm (3.6 in), 8 January 2005 Jan Feb: 66.0 mm (2.6 in), 5 February 2019 Feb Mar: 104.1 mm (4.1 in), 11 March 1995 Mar Apr: 50.8 mm (2.0 in), 18 April 1981 Apr May: 48.3 mm (1.9 in), 28 May 1990 May Jun: 50.8 mm (2.0 in), 2 June 1999 Jun Jul: 48.3 mm (1.9 in), 18 July 1984 Jul Aug: 104.1 mm (4.1 in), 18 August 2021 Aug Sep: 68.6 mm (2.7 in), 30 September 2004 Sep Oct: 132.1 mm (5.2 in), 20 October 2004 Oct Nov: 91.4 mm (3.6 in), 30 November 1982 Nov Dec: 99.1 mm (3.9 in), 20 December 2010 Dec
The wettest day on record for each calendar month at Midway Valley. The most was 132.1 mm (5.2 in) on 20 October 2004.
Record daily precipitation for each month at Midway Valley
MonthRecord daily precipitation (mm)Date
Jan91.4 mm (3.6 in)8 January 2005
Feb66.0 mm (2.6 in)5 February 2019
Mar104.1 mm (4.1 in)11 March 1995
Apr50.8 mm (2.0 in)18 April 1981
May48.3 mm (1.9 in)28 May 1990
Jun50.8 mm (2.0 in)2 June 1999
Jul48.3 mm (1.9 in)18 July 1984
Aug104.1 mm (4.1 in)18 August 2021
Sep68.6 mm (2.7 in)30 September 2004
Oct132.1 mm (5.2 in)20 October 2004
Nov91.4 mm (3.6 in)30 November 1982
Dec99.1 mm (3.9 in)20 December 2010

Period of Record Coverage

2003 to 2026
Days with data per year at Midway Valley 24 years of record at Midway Valley, 2003 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 2003, 2026. 2003: 208 of 365 days2004: 365 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 364 of 365 days2015: 365 of 365 days2016: 366 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: 363 of 365 days2024: 365 of 366 days2025: 365 of 365 days2026: 287 of 365 days20052010201520202025
24 years of record at Midway Valley, 2003 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 2003, 2026.
Days with data per year at Midway Valley
YearDays with dataShare of yearComplete
200320857%No
2004365100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014364100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
202336399%Yes
2024365100%Yes
2025365100%Yes
202628779%No

Latest Records

20
Latest records at Midway Valley
DateStationRecordValueBeat old record byOld record stoodSignificance
11 October 2026Midway Valley, USdaily rain (Tie, Provisional)27.9 mm (1.1 in)tie41 years4 of 100 (Routine)
28 September 2026Midway Valley, USdaily rain (Provisional)22.9 mm (0.9 in)5.1 mm (0.20 in)24 years16 of 100 (Routine)
16 September 2026Midway Valley, USdaily rain (Provisional)25.4 mm (1.0 in)5.1 mm (0.20 in)29 years17 of 100 (Routine)
14 August 2026Midway Valley, USdaily rain10.2 mm (0.4 in)2.6 mm (0.10 in)19 years11 of 100 (Routine)
13 August 2026Midway Valley, USdaily rain15.2 mm (0.6 in)2.5 mm (0.10 in)32 years15 of 100 (Routine)
17 July 2026Midway Valley, USdaily rain10.2 mm (0.4 in)2.6 mm (0.10 in)24 years14 of 100 (Routine)
13 April 2026Midway Valley, USdaily rain17.8 mm (0.7 in)7.6 mm (0.30 in)13 years17 of 100 (Routine)
16 February 2026Midway Valley, USdaily rain30.5 mm (1.2 in)2.6 mm (0.10 in)16 years11 of 100 (Routine)
16 November 2025Midway Valley, USdaily rain48.3 mm (1.9 in)33.1 mm (1.3 in)10 years34 of 100 (Routine)
15 October 2025Midway Valley, USdaily rain27.9 mm (1.1 in)10.1 mm (0.4 in)31 years21 of 100 (Routine)
13 March 2025Midway Valley, USdaily rain48.3 mm (1.9 in)17.8 mm (0.7 in)44 years32 of 100 (Routine)
26 November 2024Midway Valley, USdaily rain40.6 mm (1.6 in)12.7 mm (0.5 in)35 years24 of 100 (Routine)
17 July 2024Midway Valley, USdaily rain (Tie)7.6 mm (0.30 in)tie22 years2 of 100 (Routine)
7 February 2024Midway Valley, USdaily rain35.6 mm (1.4 in)17.8 mm (0.7 in)33 years30 of 100 (Routine)
6 February 2024Midway Valley, USdaily rain55.9 mm (2.2 in)33.0 mm (1.3 in)13 years38 of 100 (Notable)
1 February 2024Midway Valley, USdaily rain (Tie)25.4 mm (1.0 in)tie33 years3 of 100 (Routine)
16 November 2023Midway Valley, USdaily rain (Tie)15.2 mm (0.6 in)tie8 years1 of 100 (Routine)
2 September 2023Midway Valley, USdaily rain (Tie)7.6 mm (0.30 in)tie28 years3 of 100 (Routine)
1 September 2023Midway Valley, USdaily rain27.9 mm (1.1 in)12.7 mm (0.5 in)1 year16 of 100 (Routine)
31 August 2023Midway Valley, USdaily rain12.7 mm (0.5 in)5.1 mm (0.20 in)24 years16 of 100 (Routine)

Climate Trend

22 complete years, 2004 to 2025
Annual mean temperature at Midway Valley as warming stripes, 2004 to 2025 One stripe for each of 22 complete years at Midway Valley, 2004 to 2025. Blue stripes are years cooler than the station's own mean of 3.1 C (37.5 F); red stripes are warmer. The coolest year was 2004, at 2.0 C (35.6 F), and the warmest was 2020, at 3.9 C (39.1 F). The strongest colour marks a difference of 1.1 C (2.0 F). 2004: 2.0 C, -1.1 C from the station mean2005: 2.5 C, -0.6 C from the station mean2006: 2.7 C, -0.4 C from the station mean2007: 3.3 C, +0.2 C from the station mean2008: 2.5 C, -0.6 C from the station mean2009: 2.7 C, -0.3 C from the station mean2010: 2.6 C, -0.4 C from the station mean2011: 2.4 C, -0.6 C from the station mean2012: 3.7 C, +0.6 C from the station mean2013: 2.4 C, -0.7 C from the station mean2014: 3.4 C, +0.3 C from the station mean2015: 3.5 C, +0.5 C from the station mean2016: 3.6 C, +0.5 C from the station mean2017: 3.9 C, +0.8 C from the station mean2018: 3.4 C, +0.4 C from the station mean2019: 2.4 C, -0.7 C from the station mean2020: 3.9 C, +0.9 C from the station mean2021: 3.8 C, +0.7 C from the station mean2022: 3.2 C, +0.1 C from the station mean2023: 2.3 C, -0.8 C from the station mean2024: 3.8 C, +0.7 C from the station mean2025: 3.6 C, +0.6 C from the station mean20042006200820102012201420162018202020222024
One stripe for each of 22 complete years at Midway Valley, 2004 to 2025. Blue stripes are years cooler than the station's own mean of 3.1 C (37.5 F); red stripes are warmer. The coolest year was 2004, at 2.0 C (35.6 F), and the warmest was 2020, at 3.9 C (39.1 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Midway Valley as warming stripes, 2004 to 2025
YearAnnual mean temperatureDifference from the station mean
20042.0 C-1.08 C
20052.5 C-0.56 C
20062.7 C-0.38 C
20073.3 C+0.21 C
20082.5 C-0.60 C
20092.7 C-0.34 C
20102.6 C-0.43 C
20112.4 C-0.63 C
20123.7 C+0.59 C
20132.4 C-0.70 C
20143.4 C+0.29 C
20153.5 C+0.45 C
20163.6 C+0.51 C
20173.9 C+0.81 C
20183.4 C+0.37 C
20192.4 C-0.71 C
20203.9 C+0.85 C
20213.8 C+0.69 C
20223.2 C+0.11 C
20232.3 C-0.77 C
20243.8 C+0.69 C
20253.6 C+0.57 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

1980 to 2026
Yearly extremes at Midway Valley: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)27.4 C (81.3 F)202125.7 C (78.2 F)24
Coldest night (TNn)-29.8 C (-21.6 F)2013-22.7 C (-8.9 F)24
Wettest day (Rx1day)132.1 mm (5.2 in)200448.3 mm (1.9 in)47
Wettest five days (Rx5day)312.4 mm (12.3 in)201094.0 mm (3.7 in)47
Longest dry spell (CDD)71 days202032 days47

Hottest day (TXx)

Hottest day (TXx) at Midway Valley by year The hottest day of the year at Midway Valley, 1980 to 2026. The record is 27.4 C (81.3 F) in 2021, marked on the chart; the median year is 25.7 C (78.2 F). 23242526272819801990200020102020Record: 27.4 C (81.3 F) in 2021
The hottest day of the year at Midway Valley, 1980 to 2026. The record is 27.4 C (81.3 F) in 2021, marked on the chart; the median year is 25.7 C (78.2 F).
Hottest day (TXx) at Midway Valley by year
YearHottest day (TXx)
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
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
200327.1 C (80.8 F)
200423.7 C (74.7 F)
200526.1 C (79.0 F)
200625.2 C (77.4 F)
200726.1 C (79.0 F)
200824.4 C (75.9 F)
200925.8 C (78.4 F)
201025.9 C (78.6 F)
201124.5 C (76.1 F)
201224.8 C (76.6 F)
201327.2 C (81.0 F)
201424.4 C (75.9 F)
201524.7 C (76.5 F)
201625.7 C (78.3 F)
201725.0 C (77.0 F)
201825.2 C (77.4 F)
201924.0 C (75.2 F)
202027.2 C (81.0 F)
202127.4 C (81.3 F)
202225.6 C (78.1 F)
202327.0 C (80.6 F)
202426.6 C (79.9 F)
202525.2 C (77.4 F)
202626.2 C (79.2 F)

Coldest night (TNn)

Coldest night (TNn) at Midway Valley by year The coldest night of the year at Midway Valley, 1980 to 2026. The record is -29.8 C (-21.6 F) in 2013, marked on the chart; the median year is -22.7 C (-8.9 F). -30-25-20-1519801990200020102020Record: -29.8 C (-21.6 F) in 2013
The coldest night of the year at Midway Valley, 1980 to 2026. The record is -29.8 C (-21.6 F) in 2013, marked on the chart; the median year is -22.7 C (-8.9 F).
Coldest night (TNn) at Midway Valley by year
YearColdest night (TNn)
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
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003-20.0 C (-4.0 F)
2004-22.2 C (-8.0 F)
2005-21.8 C (-7.2 F)
2006-24.4 C (-11.9 F)
2007-27.0 C (-16.6 F)
2008-23.8 C (-10.8 F)
2009-26.0 C (-14.8 F)
2010-24.9 C (-12.8 F)
2011-26.1 C (-15.0 F)
2012-20.2 C (-4.4 F)
2013-29.8 C (-21.6 F)
2014-24.3 C (-11.7 F)
2015-22.5 C (-8.5 F)
2016-23.3 C (-9.9 F)
2017-25.2 C (-13.4 F)
2018-26.7 C (-16.1 F)
2019-22.2 C (-8.0 F)
2020-19.5 C (-3.1 F)
2021-21.1 C (-6.0 F)
2022-22.1 C (-7.8 F)
2023-22.9 C (-9.2 F)
2024-19.1 C (-2.4 F)
2025-19.7 C (-3.5 F)
2026-22.1 C (-7.8 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Midway Valley by year The wettest day of the year at Midway Valley, 1980 to 2026. The record is 132.1 mm (5.2 in) in 2004, marked on the chart; the median year is 48.3 mm (1.9 in). 05010015019801990200020102020Record: 132.1 mm (5.2 in) in 2004
The wettest day of the year at Midway Valley, 1980 to 2026. The record is 132.1 mm (5.2 in) in 2004, marked on the chart; the median year is 48.3 mm (1.9 in).
Wettest day (Rx1day) at Midway Valley by year
YearWettest day (Rx1day)
19800.0 mm (0.00 in)
198150.8 mm (2.0 in)
198291.4 mm (3.6 in)
198348.3 mm (1.9 in)
198448.3 mm (1.9 in)
198558.4 mm (2.3 in)
198650.8 mm (2.0 in)
198740.6 mm (1.6 in)
198830.5 mm (1.2 in)
198948.3 mm (1.9 in)
199048.3 mm (1.9 in)
199145.7 mm (1.8 in)
199238.1 mm (1.5 in)
199363.5 mm (2.5 in)
199445.7 mm (1.8 in)
1995104.1 mm (4.1 in)
199653.3 mm (2.1 in)
199750.8 mm (2.0 in)
199848.3 mm (1.9 in)
199950.8 mm (2.0 in)
200048.3 mm (1.9 in)
200138.1 mm (1.5 in)
200233.0 mm (1.3 in)
200327.9 mm (1.1 in)
2004132.1 mm (5.2 in)
200591.4 mm (3.6 in)
200643.2 mm (1.7 in)
200740.6 mm (1.6 in)
200876.2 mm (3.0 in)
200950.8 mm (2.0 in)
201099.1 mm (3.9 in)
201176.2 mm (3.0 in)
201250.8 mm (2.0 in)
201330.5 mm (1.2 in)
201448.3 mm (1.9 in)
201555.9 mm (2.2 in)
201671.1 mm (2.8 in)
201738.1 mm (1.5 in)
201850.8 mm (2.0 in)
201966.0 mm (2.6 in)
202040.6 mm (1.6 in)
2021104.1 mm (4.1 in)
202245.7 mm (1.8 in)
202358.4 mm (2.3 in)
202455.9 mm (2.2 in)
202548.3 mm (1.9 in)
202638.1 mm (1.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Midway Valley by year The wettest five days of the year at Midway Valley, 1980 to 2026. The record is 312.4 mm (12.3 in) in 2010, marked on the chart; the median year is 94.0 mm (3.7 in). 010020030040019801990200020102020Record: 312.4 mm (12.3 in) in 2010
The wettest five days of the year at Midway Valley, 1980 to 2026. The record is 312.4 mm (12.3 in) in 2010, marked on the chart; the median year is 94.0 mm (3.7 in).
Wettest five days (Rx5day) at Midway Valley by year
YearWettest five days (Rx5day)
19800.0 mm (0.00 in)
198181.3 mm (3.2 in)
1982165.0 mm (6.5 in)
1983144.8 mm (5.7 in)
1984106.7 mm (4.2 in)
198589.0 mm (3.5 in)
1986121.9 mm (4.8 in)
198781.2 mm (3.2 in)
198896.5 mm (3.8 in)
198960.9 mm (2.4 in)
199071.2 mm (2.8 in)
199196.5 mm (3.8 in)
199276.1 mm (3.0 in)
1993124.5 mm (4.9 in)
199486.3 mm (3.4 in)
1995147.2 mm (5.8 in)
1996139.6 mm (5.5 in)
199788.9 mm (3.5 in)
1998111.7 mm (4.4 in)
199986.4 mm (3.4 in)
200096.5 mm (3.8 in)
200176.2 mm (3.0 in)
200278.7 mm (3.1 in)
200358.3 mm (2.3 in)
2004264.3 mm (10.4 in)
2005210.8 mm (8.3 in)
2006106.7 mm (4.2 in)
200766.0 mm (2.6 in)
2008106.7 mm (4.2 in)
200986.4 mm (3.4 in)
2010312.4 mm (12.3 in)
201194.0 mm (3.7 in)
201276.3 mm (3.0 in)
201355.7 mm (2.2 in)
201453.3 mm (2.1 in)
2015116.7 mm (4.6 in)
201693.9 mm (3.7 in)
201796.5 mm (3.8 in)
201873.6 mm (2.9 in)
2019162.6 mm (6.4 in)
202088.8 mm (3.5 in)
2021162.5 mm (6.4 in)
202283.8 mm (3.3 in)
2023119.4 mm (4.7 in)
2024137.2 mm (5.4 in)
202586.4 mm (3.4 in)
2026116.8 mm (4.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Midway Valley by year The longest dry spell of the year at Midway Valley, 1980 to 2026. The record is 71 days in 2020, marked on the chart; the median year is 32 days. 02040608019801990200020102020Record: 71 days in 2020
The longest dry spell of the year at Midway Valley, 1980 to 2026. The record is 71 days in 2020, marked on the chart; the median year is 32 days.
Longest dry spell (CDD) at Midway Valley by year
YearLongest dry spell (CDD)
19809 days
198111 days
198218 days
198324 days
198434 days
198516 days
198615 days
198719 days
198832 days
198940 days
199018 days
199131 days
199232 days
199322 days
199448 days
199522 days
199642 days
199722 days
199817 days
199935 days
200027 days
200116 days
200259 days
200362 days
200429 days
200520 days
200622 days
200742 days
200828 days
200923 days
201037 days
201145 days
201269 days
201347 days
201441 days
201534 days
201629 days
201754 days
201838 days
201937 days
202071 days
202162 days
202257 days
202335 days
202454 days
202535 days
202623 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

22 years with a frost

Across 22 years with a frost, the median last spring frost at Midway Valley falls on 15 June and the median first autumn frost on 14 September, which leaves a median of 90 days between them.

Frost dates and growing season at Midway Valley
MeasureMedian, all yearsEarliest periodRecent period (2004 to 2025)Recent against earliestFitted trend
Last spring frost15 Junen/a15 Junen/an/a
First autumn frost14 Septembern/a14 Septembern/an/a
Growing days90 daysn/a90 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

44 years, 1982 to 2025

A day with at least 50.3 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 149.2 mm (5.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Midway Valley: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years50.3 mm (2.0 in)
5 years68.1 mm (2.7 in)
10 years82.7 mm (3.3 in)
25 years105.3 mm (4.1 in)
50 years125.5 mm (4.9 in)Longer than the 44 years of record
100 years149.2 mm (5.9 in)Longer than the 44 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, 44 years of values from 1982 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: 132.1 mm (5.2 in) in 2004; 104.1 mm (4.1 in) in 1995; 104.1 mm (4.1 in) in 2021.

Download the Data

  • Data for Midway Valley standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Midway Valley 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).