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Chalk Creek #1 Weather Records (USS0011J01S)

Record envelope, standing records and threshold days for Chalk Creek #1 (USS0011J01S), Utah, United States, with 49 years of record.

Key Facts for Chalk Creek #1

  • Chalk Creek #1 (USS0011J01S) is a weather station in Utah, United States at 40.85 latitude and -111.05 longitude, 2,741 m (8,993 ft) above sea level.
  • The station reports from 1978 to 2026, 49 years of record.
  • 1,464 records set at Chalk Creek #1 still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Chalk Creek #1 set a daily record precipitation of 27.9 mm (1.1 in) on 14 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, 40.85 latitude, -111.05 longitude.
  • Elevation: 2,741 m (8,993 ft).
  • Period of record: 1978 to 2026, 49 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

32 days at or beyond a record
Daily record high and record low at Chalk Creek #1, with 2026 drawn through them The band shows the record high and record low for each calendar day at Chalk Creek #1. The lines show the 2026 daily maximum and minimum. 32 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 Chalk Creek #1. The lines show the 2026 daily maximum and minimum. 32 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Chalk Creek #1, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan13.7 C (56.7 F)-26.7 C (-16.1 F)8.4 C (47.1 F)-17.7 C (0.1 F)
Feb11.8 C (53.2 F)-26.7 C (-16.1 F)10.0 C (50.0 F)-15.6 C (3.9 F)
Mar20.1 C (68.2 F)-23.9 C (-11.0 F)17.8 C (64.0 F)-14.5 C (5.9 F)
Apr18.7 C (65.7 F)-17.3 C (0.9 F)14.4 C (57.9 F)-14.8 C (5.4 F)
May22.4 C (72.3 F)-12.4 C (9.7 F)20.8 C (69.4 F)-7.2 C (19.0 F)
Jun25.2 C (77.4 F)-6.3 C (20.7 F)22.0 C (71.6 F)-2.5 C (27.5 F)
Jul28.0 C (82.4 F)-0.9 C (30.4 F)28.0 C (82.4 F)5.4 C (41.7 F)
Aug27.0 C (80.6 F)-0.9 C (30.4 F)26.7 C (80.1 F)5.9 C (42.6 F)
Sep26.6 C (79.9 F)-8.5 C (16.7 F)20.6 C (69.1 F)0.7 C (33.3 F)
Oct20.1 C (68.2 F)-21.1 C (-6.0 F)19.5 C (67.1 F)-2.7 C (27.1 F)
Nov15.7 C (60.3 F)-24.6 C (-12.3 F)n/an/a
Dec13.4 C (56.1 F)-25.7 C (-14.3 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Chalk Creek #1 by the year they were set 1,464 records at Chalk Creek #1 still stand. 2024 holds the most, with 78. 0204060801999: 232000: 512001: 522002: 542003: 592004: 562005: 372006: 542007: 592008: 632009: 522010: 452011: 412012: 452013: 542014: 432015: 652016: 472017: 512018: 422019: 422020: 652021: 602022: 612023: 412024: 782025: 632026: 611999200220052008201120142017202020232026
1,464 records at Chalk Creek #1 still stand. 2024 holds the most, with 78.
Standing records at Chalk Creek #1 by the year they were set
Year setStanding records
199923
200051
200152
200254
200359
200456
200537
200654
200759
200863
200952
201045
201141
201245
201354
201443
201565
201647
201751
201842
201942
202065
202160
202261
202341
202478
202563
202661

Wettest Day of Each Month

Feb: 63.5 mm (2.5 in)
Record daily precipitation for each month at Chalk Creek #1 The wettest day on record for each calendar month at Chalk Creek #1. The most was 63.5 mm (2.5 in) on 17 February 1986. 020406080 Jan: 53.3 mm (2.1 in), 9 January 2017 Jan Feb: 63.5 mm (2.5 in), 17 February 1986 Feb Mar: 58.4 mm (2.3 in), 27 March 1982 Mar Apr: 55.9 mm (2.2 in), 7 April 1980 Apr May: 43.2 mm (1.7 in), 11 May 2010 May Jun: 45.7 mm (1.8 in), 17 June 1998 Jun Jul: 48.3 mm (1.9 in), 23 July 1993 Jul Aug: 53.3 mm (2.1 in), 18 August 2021 Aug Sep: 63.5 mm (2.5 in), 27 September 2014 Sep Oct: 58.4 mm (2.3 in), 24 October 2010 Oct Nov: 50.8 mm (2.0 in), 20 November 2010 Nov Dec: 48.3 mm (1.9 in), 19 December 2010 Dec
The wettest day on record for each calendar month at Chalk Creek #1. The most was 63.5 mm (2.5 in) on 17 February 1986.
Record daily precipitation for each month at Chalk Creek #1
MonthRecord daily precipitation (mm)Date
Jan53.3 mm (2.1 in)9 January 2017
Feb63.5 mm (2.5 in)17 February 1986
Mar58.4 mm (2.3 in)27 March 1982
Apr55.9 mm (2.2 in)7 April 1980
May43.2 mm (1.7 in)11 May 2010
Jun45.7 mm (1.8 in)17 June 1998
Jul48.3 mm (1.9 in)23 July 1993
Aug53.3 mm (2.1 in)18 August 2021
Sep63.5 mm (2.5 in)27 September 2014
Oct58.4 mm (2.3 in)24 October 2010
Nov50.8 mm (2.0 in)20 November 2010
Dec48.3 mm (1.9 in)19 December 2010

Period of Record Coverage

1999 to 2026
Days with data per year at Chalk Creek #1 28 years of record at Chalk Creek #1, 1999 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1999, 2026. 1999: 102 of 365 days2000: 364 of 366 days2001: 347 of 365 days2002: 365 of 365 days2003: 364 of 365 days2004: 366 of 366 days2005: 364 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: 365 of 366 days2021: 356 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 286 of 365 days200020052010201520202025
28 years of record at Chalk Creek #1, 1999 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1999, 2026.
Days with data per year at Chalk Creek #1
YearDays with dataShare of yearComplete
199910228%No
200036499%Yes
200134795%Yes
2002365100%Yes
2003364100%Yes
2004366100%Yes
2005364100%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
2020365100%Yes
202135698%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628678%No

Latest Records

20
Latest records at Chalk Creek #1
DateStationRecordValueBeat old record byOld record stoodSignificance
14 October 2026Chalk Creek #1, USdaily rain (Provisional)27.9 mm (1.1 in)5.0 mm (0.20 in)45 years23 of 100 (Routine)
11 October 2026Chalk Creek #1, USdaily rain (Provisional)25.4 mm (1.0 in)5.1 mm (0.20 in)28 years18 of 100 (Routine)
29 August 2026Chalk Creek #1, USdaily rain (Provisional)38.1 mm (1.5 in)27.9 mm (1.1 in)23 years50 of 100 (Notable)
23 August 2026Chalk Creek #1, USdaily rain (Tie, Provisional)12.7 mm (0.5 in)tie39 years3 of 100 (Routine)
13 August 2026Chalk Creek #1, USdaily rain22.9 mm (0.9 in)12.7 mm (0.5 in)39 years20 of 100 (Routine)
9 August 2026Chalk Creek #1, USdaily rain30.5 mm (1.2 in)15.3 mm (0.6 in)17 years33 of 100 (Routine)
30 May 2026Chalk Creek #1, USdaily rain17.8 mm (0.7 in)2.6 mm (0.10 in)35 years18 of 100 (Routine)
17 May 2026Chalk Creek #1, USdaily rain (Tie)15.2 mm (0.6 in)tie44 years4 of 100 (Routine)
2 April 2026Chalk Creek #1, USdaily rain33.0 mm (1.3 in)5.1 mm (0.20 in)36 years22 of 100 (Routine)
3 March 2026Chalk Creek #1, USdaily rain22.9 mm (0.9 in)10.2 mm (0.4 in)35 years20 of 100 (Routine)
15 October 2025Chalk Creek #1, USdaily rain (Tie)17.8 mm (0.7 in)tie31 years3 of 100 (Routine)
31 March 2025Chalk Creek #1, USdaily rain20.3 mm (0.8 in)5.1 mm (0.20 in)42 years20 of 100 (Routine)
29 October 2024Chalk Creek #1, USdaily rain25.4 mm (1.0 in)10.2 mm (0.4 in)32 years26 of 100 (Routine)
13 August 2024Chalk Creek #1, USdaily rain (Tie)10.2 mm (0.4 in)tie37 years3 of 100 (Routine)
12 August 2024Chalk Creek #1, USdaily rain22.9 mm (0.9 in)12.7 mm (0.5 in)21 years20 of 100 (Routine)
18 July 2024Chalk Creek #1, USdaily rain (Tie)7.6 mm (0.30 in)tie29 years3 of 100 (Routine)
7 May 2024Chalk Creek #1, USdaily rain (Tie)17.8 mm (0.7 in)tie38 years3 of 100 (Routine)
31 March 2024Chalk Creek #1, USdaily rain (Tie)15.2 mm (0.6 in)tie41 years4 of 100 (Routine)
28 March 2024Chalk Creek #1, USdaily rain17.8 mm (0.7 in)2.6 mm (0.10 in)26 years14 of 100 (Routine)
14 January 2024Chalk Creek #1, USdaily rain (Tie)12.7 mm (0.5 in)tie44 years4 of 100 (Routine)

Climate Trend

25 complete years, 2000 to 2025
Annual mean temperature at Chalk Creek #1 as warming stripes, 2000 to 2025 One stripe for each of 25 complete years at Chalk Creek #1, 2000 to 2025. Blue stripes are years cooler than the station's own mean of 3.6 C (38.4 F); red stripes are warmer. The coolest year was 2008, at 2.3 C (36.1 F), and the warmest was 2025, at 4.9 C (40.9 F). The strongest colour marks a difference of 1.4 C (2.5 F). 2000: 3.6 C, 0.0 C from the station mean2002: 3.2 C, -0.4 C from the station mean2003: 4.1 C, +0.5 C from the station mean2004: 3.4 C, -0.1 C from the station mean2005: 3.6 C, 0.0 C from the station mean2006: 3.1 C, -0.5 C from the station mean2007: 3.8 C, +0.2 C from the station mean2008: 2.3 C, -1.3 C from the station mean2009: 2.8 C, -0.8 C from the station mean2010: 2.9 C, -0.7 C from the station mean2011: 2.4 C, -1.2 C from the station mean2012: 4.2 C, +0.6 C from the station mean2013: 3.0 C, -0.6 C from the station mean2014: 3.6 C, 0.0 C from the station mean2015: 4.3 C, +0.7 C from the station mean2016: 4.2 C, +0.6 C from the station mean2017: 4.1 C, +0.6 C from the station mean2018: 3.9 C, +0.4 C from the station mean2019: 3.0 C, -0.6 C from the station mean2020: 4.0 C, +0.4 C from the station mean2021: 4.1 C, +0.6 C from the station mean2022: 3.4 C, -0.2 C from the station mean2023: 3.3 C, -0.2 C from the station mean2024: 4.4 C, +0.9 C from the station mean2025: 4.9 C, +1.3 C from the station mean200020052010201520202025
One stripe for each of 25 complete years at Chalk Creek #1, 2000 to 2025. Blue stripes are years cooler than the station's own mean of 3.6 C (38.4 F); red stripes are warmer. The coolest year was 2008, at 2.3 C (36.1 F), and the warmest was 2025, at 4.9 C (40.9 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Chalk Creek #1 as warming stripes, 2000 to 2025
YearAnnual mean temperatureDifference from the station mean
20003.6 C-0.03 C
20023.2 C-0.42 C
20034.1 C+0.50 C
20043.4 C-0.14 C
20053.6 C-0.01 C
20063.1 C-0.45 C
20073.8 C+0.20 C
20082.3 C-1.33 C
20092.8 C-0.83 C
20102.9 C-0.66 C
20112.4 C-1.20 C
20124.2 C+0.62 C
20133.0 C-0.57 C
20143.6 C+0.03 C
20154.3 C+0.71 C
20164.2 C+0.64 C
20174.1 C+0.56 C
20183.9 C+0.36 C
20193.0 C-0.62 C
20204.0 C+0.37 C
20214.1 C+0.56 C
20223.4 C-0.20 C
20233.3 C-0.24 C
20244.4 C+0.86 C
20254.9 C+1.35 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

1978 to 2026
Yearly extremes at Chalk Creek #1: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)28.0 C (82.4 F)202625.6 C (78.1 F)28
Coldest night (TNn)-26.7 C (-16.1 F)2011-22.3 C (-8.1 F)28
Wettest day (Rx1day)63.5 mm (2.5 in)198638.1 mm (1.5 in)49
Wettest five days (Rx5day)154.9 mm (6.1 in)198678.6 mm (3.1 in)49
Longest dry spell (CDD)57 days202522 days49

Hottest day (TXx)

Hottest day (TXx) at Chalk Creek #1 by year The hottest day of the year at Chalk Creek #1, 1978 to 2026. The record is 28.0 C (82.4 F) in 2026, marked on the chart; the median year is 25.6 C (78.1 F). 1520253019801990200020102020Record: 28.0 C (82.4 F) in 2026
The hottest day of the year at Chalk Creek #1, 1978 to 2026. The record is 28.0 C (82.4 F) in 2026, marked on the chart; the median year is 25.6 C (78.1 F).
Hottest day (TXx) at Chalk Creek #1 by year
YearHottest day (TXx)
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
1998n/a
199917.4 C (63.3 F)
200027.0 C (80.6 F)
200126.4 C (79.5 F)
200227.2 C (81.0 F)
200326.0 C (78.8 F)
200424.0 C (75.2 F)
200526.0 C (78.8 F)
200625.8 C (78.4 F)
200726.1 C (79.0 F)
200824.2 C (75.6 F)
200925.2 C (77.4 F)
201024.5 C (76.1 F)
201124.0 C (75.2 F)
201225.6 C (78.1 F)
201324.9 C (76.8 F)
201424.0 C (75.2 F)
201524.3 C (75.7 F)
201625.6 C (78.1 F)
201725.4 C (77.7 F)
201825.6 C (78.1 F)
201924.6 C (76.3 F)
202026.8 C (80.2 F)
202125.7 C (78.3 F)
202226.6 C (79.9 F)
202325.6 C (78.1 F)
202426.2 C (79.2 F)
202526.8 C (80.2 F)
202628.0 C (82.4 F)

Coldest night (TNn)

Coldest night (TNn) at Chalk Creek #1 by year The coldest night of the year at Chalk Creek #1, 1978 to 2026. The record is -26.7 C (-16.1 F) in 2011, marked on the chart; the median year is -22.3 C (-8.1 F). -27.5-25-22.5-20-17.519801990200020102020Record: -26.7 C (-16.1 F) in 2011
The coldest night of the year at Chalk Creek #1, 1978 to 2026. The record is -26.7 C (-16.1 F) in 2011, marked on the chart; the median year is -22.3 C (-8.1 F).
Coldest night (TNn) at Chalk Creek #1 by year
YearColdest night (TNn)
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
1998n/a
1999-19.0 C (-2.2 F)
2000-18.9 C (-2.0 F)
2001-21.2 C (-6.2 F)
2002-24.2 C (-11.6 F)
2003-22.3 C (-8.1 F)
2004-21.3 C (-6.3 F)
2005-24.2 C (-11.6 F)
2006-23.0 C (-9.4 F)
2007-25.3 C (-13.5 F)
2008-24.7 C (-12.5 F)
2009-23.3 C (-9.9 F)
2010-24.9 C (-12.8 F)
2011-26.7 C (-16.1 F)
2012-21.2 C (-6.2 F)
2013-26.3 C (-15.3 F)
2014-24.1 C (-11.4 F)
2015-20.8 C (-5.4 F)
2016-23.7 C (-10.7 F)
2017-22.2 C (-8.0 F)
2018-22.3 C (-8.1 F)
2019-21.6 C (-6.9 F)
2020-22.0 C (-7.6 F)
2021-20.2 C (-4.4 F)
2022-22.1 C (-7.8 F)
2023-24.1 C (-11.4 F)
2024-18.0 C (-0.4 F)
2025-26.7 C (-16.1 F)
2026-17.7 C (0.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Chalk Creek #1 by year The wettest day of the year at Chalk Creek #1, 1978 to 2026. The record is 63.5 mm (2.5 in) in 1986, marked on the chart; the median year is 38.1 mm (1.5 in). 2040608019801990200020102020Record: 63.5 mm (2.5 in) in 1986
The wettest day of the year at Chalk Creek #1, 1978 to 2026. The record is 63.5 mm (2.5 in) in 1986, marked on the chart; the median year is 38.1 mm (1.5 in).
Wettest day (Rx1day) at Chalk Creek #1 by year
YearWettest day (Rx1day)
197822.9 mm (0.9 in)
197945.7 mm (1.8 in)
198055.9 mm (2.2 in)
198130.5 mm (1.2 in)
198258.4 mm (2.3 in)
198330.5 mm (1.2 in)
198445.7 mm (1.8 in)
198540.6 mm (1.6 in)
198663.5 mm (2.5 in)
198727.9 mm (1.1 in)
198838.1 mm (1.5 in)
198938.1 mm (1.5 in)
199038.1 mm (1.5 in)
199143.2 mm (1.7 in)
199230.5 mm (1.2 in)
199348.3 mm (1.9 in)
199443.2 mm (1.7 in)
199543.2 mm (1.7 in)
199640.6 mm (1.6 in)
199745.7 mm (1.8 in)
199845.7 mm (1.8 in)
199930.5 mm (1.2 in)
200038.1 mm (1.5 in)
200127.9 mm (1.1 in)
200233.0 mm (1.3 in)
200322.9 mm (0.9 in)
200445.7 mm (1.8 in)
200540.6 mm (1.6 in)
200643.2 mm (1.7 in)
200730.5 mm (1.2 in)
200835.6 mm (1.4 in)
200943.2 mm (1.7 in)
201058.4 mm (2.3 in)
201138.1 mm (1.5 in)
201235.6 mm (1.4 in)
201327.9 mm (1.1 in)
201463.5 mm (2.5 in)
201530.5 mm (1.2 in)
201645.7 mm (1.8 in)
201753.3 mm (2.1 in)
201830.5 mm (1.2 in)
201933.0 mm (1.3 in)
202033.0 mm (1.3 in)
202153.3 mm (2.1 in)
202230.5 mm (1.2 in)
202338.1 mm (1.5 in)
202425.4 mm (1.0 in)
202525.4 mm (1.0 in)
202638.1 mm (1.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Chalk Creek #1 by year The wettest five days of the year at Chalk Creek #1, 1978 to 2026. The record is 154.9 mm (6.1 in) in 1986, marked on the chart; the median year is 78.6 mm (3.1 in). 05010015020019801990200020102020Record: 154.9 mm (6.1 in) in 1986
The wettest five days of the year at Chalk Creek #1, 1978 to 2026. The record is 154.9 mm (6.1 in) in 1986, marked on the chart; the median year is 78.6 mm (3.1 in).
Wettest five days (Rx5day) at Chalk Creek #1 by year
YearWettest five days (Rx5day)
197855.9 mm (2.2 in)
197988.8 mm (3.5 in)
1980109.3 mm (4.3 in)
198181.2 mm (3.2 in)
1982111.8 mm (4.4 in)
198371.1 mm (2.8 in)
198483.9 mm (3.3 in)
198593.9 mm (3.7 in)
1986154.9 mm (6.1 in)
198753.3 mm (2.1 in)
198858.5 mm (2.3 in)
198968.6 mm (2.7 in)
199063.5 mm (2.5 in)
199186.4 mm (3.4 in)
199276.2 mm (3.0 in)
199383.8 mm (3.3 in)
199478.6 mm (3.1 in)
199571.0 mm (2.8 in)
199681.2 mm (3.2 in)
199794.0 mm (3.7 in)
199888.9 mm (3.5 in)
199971.1 mm (2.8 in)
200055.8 mm (2.2 in)
200176.1 mm (3.0 in)
200258.4 mm (2.3 in)
200378.8 mm (3.1 in)
2004104.1 mm (4.1 in)
2005126.9 mm (5.0 in)
200683.8 mm (3.3 in)
200766.1 mm (2.6 in)
200883.8 mm (3.3 in)
200978.7 mm (3.1 in)
2010114.3 mm (4.5 in)
201161.1 mm (2.4 in)
201258.5 mm (2.3 in)
201350.8 mm (2.0 in)
2014104.2 mm (4.1 in)
201548.3 mm (1.9 in)
201666.0 mm (2.6 in)
2017147.2 mm (5.8 in)
201888.9 mm (3.5 in)
201966.0 mm (2.6 in)
202060.9 mm (2.4 in)
2021124.3 mm (4.9 in)
202273.7 mm (2.9 in)
202371.2 mm (2.8 in)
202458.3 mm (2.3 in)
202568.6 mm (2.7 in)
202686.3 mm (3.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Chalk Creek #1 by year The longest dry spell of the year at Chalk Creek #1, 1978 to 2026. The record is 57 days in 2025, marked on the chart; the median year is 22 days. 020406019801990200020102020Record: 57 days in 2025
The longest dry spell of the year at Chalk Creek #1, 1978 to 2026. The record is 57 days in 2025, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Chalk Creek #1 by year
YearLongest dry spell (CDD)
197832 days
197922 days
198044 days
198122 days
198214 days
198316 days
198428 days
198521 days
198623 days
198715 days
198828 days
198919 days
199015 days
199114 days
199224 days
199316 days
199429 days
199512 days
199620 days
199726 days
199820 days
199922 days
200022 days
200136 days
200232 days
200337 days
200418 days
200520 days
200619 days
200737 days
200854 days
200920 days
201016 days
201114 days
201238 days
201337 days
201423 days
201514 days
201622 days
201726 days
201825 days
201920 days
202032 days
202130 days
202222 days
202315 days
202419 days
202557 days
202624 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

25 years with a frost

Across 25 years with a frost, the median last spring frost at Chalk Creek #1 falls on 13 June and the median first autumn frost on 15 September, which leaves a median of 94 days between them.

Fitted over all years, the growing season changes by +3.6 days per decade at this station.

Frost dates and growing season at Chalk Creek #1
MeasureMedian, all yearsEarliest periodRecent period (2000 to 2025)Recent against earliestFitted trend
Last spring frost13 Junen/a13 Junen/a+0.6 days per decade
First autumn frost15 Septembern/a15 Septembern/a+4.2 days per decade
Growing days94 daysn/a94 daysn/a+3.6 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

47 years, 1979 to 2025

A day with at least 38.3 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 70.4 mm (2.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Chalk Creek #1: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years38.3 mm (1.5 in)
5 years47.7 mm (1.9 in)
10 years53.6 mm (2.1 in)
25 years60.7 mm (2.4 in)
50 years65.6 mm (2.6 in)Longer than the 47 years of record
100 years70.4 mm (2.8 in)Longer than the 47 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, 47 years of values from 1979 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: 63.5 mm (2.5 in) in 1986; 63.5 mm (2.5 in) in 2014; 58.4 mm (2.3 in) in 1982.

Download the Data

  • Data for Chalk Creek #1 standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Chalk Creek #1 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).