Chalk Creek #2 Weather Records (USS0011J02S)

Record envelope, standing records and threshold days for Chalk Creek #2 (USS0011J02S), Utah, United States, with 49 years of record.

Key Facts for Chalk Creek #2

Chalk Creek #2 (USS0011J02S) is a weather station in Utah, United States at 40.89 latitude and -111.07 longitude, 2,487 m (8,158 ft) above sea level.
The station reports from 1978 to 2026, 49 years of record.
1,464 records set at Chalk Creek #2 still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Chalk Creek #2 set a daily record precipitation of 15.2 mm (0.6 in) on 12 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, 40.89 latitude, -111.07 longitude.
Elevation: 2,487 m (8,158 ft).
Period of record: 1978 to 2026, 49 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

34 days at or beyond a record

The band shows the record high and record low for each calendar day at Chalk Creek #2. The lines show the 2026 daily maximum and minimum. 34 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Chalk Creek #2, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	11.1 C (52.0 F)	-26.7 C (-16.1 F)	7.9 C (46.2 F)	-16.8 C (1.8 F)
Feb	13.3 C (55.9 F)	-28.8 C (-19.8 F)	9.9 C (49.8 F)	-14.9 C (5.2 F)
Mar	19.5 C (67.1 F)	-18.2 C (-0.8 F)	19.5 C (67.1 F)	-11.9 C (10.6 F)
Apr	21.3 C (70.3 F)	-16.2 C (2.8 F)	18.7 C (65.7 F)	-12.0 C (10.4 F)
May	24.3 C (75.7 F)	-10.4 C (13.3 F)	23.6 C (74.5 F)	-4.1 C (24.6 F)
Jun	28.6 C (83.5 F)	-2.7 C (27.1 F)	21.2 C (70.2 F)	8.3 C (46.9 F)
Jul	29.6 C (85.3 F)	1.2 C (34.2 F)	29.6 C (85.3 F)	6.3 C (43.3 F)
Aug	28.9 C (84.0 F)	2.0 C (35.6 F)	28.7 C (83.7 F)	7.2 C (45.0 F)
Sep	27.4 C (81.3 F)	-5.2 C (22.6 F)	21.6 C (70.9 F)	3.6 C (38.5 F)
Oct	22.1 C (71.8 F)	-20.9 C (-5.6 F)	21.2 C (70.2 F)	2.3 C (36.1 F)
Nov	16.1 C (61.0 F)	-23.8 C (-10.8 F)	n/a	n/a
Dec	11.9 C (53.4 F)	-26.4 C (-15.5 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Chalk Creek #2 still stand. 2015 holds the most, with 106.

Standing records at Chalk Creek #2 by the year they were set
Year set	Standing records
2007	47
2008	87
2009	76
2010	79
2011	69
2012	74
2013	80
2014	69
2015	106
2016	71
2017	85
2018	58
2019	58
2020	82
2021	69
2022	86
2023	58
2024	79
2025	72
2026	59

All-Time Record Progression

1 new records

1 all-time records were set at Chalk Creek #2 between 27 September 2014 and 27 September 2014. Each dot is a new record.

Wettest Day of Each Month

Sep: 55.9 mm (2.2 in)

The wettest day on record for each calendar month at Chalk Creek #2. The most was 55.9 mm (2.2 in) on 27 September 2014.

Record daily precipitation for each month at Chalk Creek #2
Month	Record daily precipitation (mm)	Date
Jan	38.1 mm (1.5 in)	11 January 2017
Feb	30.5 mm (1.2 in)	18 February 1980
Mar	35.6 mm (1.4 in)	20 March 2021
Apr	30.5 mm (1.2 in)	11 April 1982
May	38.1 mm (1.5 in)	10 May 2005
Jun	43.2 mm (1.7 in)	17 June 1998
Jul	35.6 mm (1.4 in)	23 July 1993
Aug	43.2 mm (1.7 in)	31 August 2008
Sep	55.9 mm (2.2 in)	27 September 2014
Oct	45.7 mm (1.8 in)	20 October 2004
Nov	40.6 mm (1.6 in)	17 November 2017
Dec	33.0 mm (1.3 in)	13 December 2009

Period of Record Coverage

2007 to 2026

20 years of record at Chalk Creek #2, 2007 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 2007, 2026.

Days with data per year at Chalk Creek #2
Year	Days with data	Share of year	Complete
2007	188	52%	No
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	364	99%	Yes
2013	364	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	365	100%	Yes
2019	365	100%	Yes
2020	366	100%	Yes
2021	355	97%	Yes
2022	365	100%	Yes
2023	347	95%	Yes
2024	351	96%	Yes
2025	364	100%	Yes
2026	241	66%	No

Latest Records

Latest records at Chalk Creek #2
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 October 2026	Chalk Creek #2, US	daily rain (Provisional)	15.2 mm (0.6 in)	2.5 mm (0.10 in)	4 years	8 of 100 (Routine)
11 October 2026	Chalk Creek #2, US	daily rain (Provisional)	30.5 mm (1.2 in)	7.6 mm (0.30 in)	28 years	23 of 100 (Routine)
18 September 2026	Chalk Creek #2, US	daily rain (Provisional)	25.4 mm (1.0 in)	5.1 mm (0.20 in)	24 years	17 of 100 (Routine)
29 August 2026	Chalk Creek #2, US	daily rain (Provisional)	35.6 mm (1.4 in)	20.4 mm (0.8 in)	40 years	52 of 100 (Notable)
13 August 2026	Chalk Creek #2, US	daily rain	25.4 mm (1.0 in)	15.2 mm (0.6 in)	1 year	30 of 100 (Routine)
12 August 2026	Chalk Creek #2, US	daily rain (Tie)	15.2 mm (0.6 in)	tie	1 year	1 of 100 (Routine)
17 July 2026	Chalk Creek #2, US	daily rain (Tie)	5.1 mm (0.20 in)	tie	39 years	3 of 100 (Routine)
31 May 2026	Chalk Creek #2, US	daily rain (Tie)	20.3 mm (0.8 in)	tie	43 years	4 of 100 (Routine)
17 May 2026	Chalk Creek #2, US	daily rain	17.8 mm (0.7 in)	7.6 mm (0.30 in)	25 years	20 of 100 (Routine)
3 March 2026	Chalk Creek #2, US	daily rain	15.2 mm (0.6 in)	2.5 mm (0.10 in)	45 years	20 of 100 (Routine)
24 February 2026	Chalk Creek #2, US	daily rain	15.2 mm (0.6 in)	2.5 mm (0.10 in)	28 years	17 of 100 (Routine)
17 February 2026	Chalk Creek #2, US	daily rain	20.3 mm (0.8 in)	7.6 mm (0.30 in)	40 years	20 of 100 (Routine)
27 December 2025	Chalk Creek #2, US	daily rain	17.8 mm (0.7 in)	2.6 mm (0.10 in)	40 years	20 of 100 (Routine)
16 October 2025	Chalk Creek #2, US	daily rain	30.5 mm (1.2 in)	12.7 mm (0.5 in)	19 years	28 of 100 (Routine)
18 March 2025	Chalk Creek #2, US	daily rain (Tie)	15.2 mm (0.6 in)	tie	38 years	3 of 100 (Routine)
14 February 2025	Chalk Creek #2, US	daily rain (Tie)	20.3 mm (0.8 in)	tie	30 years	3 of 100 (Routine)
7 February 2025	Chalk Creek #2, US	daily rain	17.8 mm (0.7 in)	2.6 mm (0.10 in)	1 year	9 of 100 (Routine)
29 October 2024	Chalk Creek #2, US	daily rain	22.9 mm (0.9 in)	10.2 mm (0.4 in)	43 years	20 of 100 (Routine)
18 October 2024	Chalk Creek #2, US	daily rain	22.9 mm (0.9 in)	10.2 mm (0.4 in)	34 years	20 of 100 (Routine)
13 August 2024	Chalk Creek #2, US	daily rain	10.2 mm (0.4 in)	2.6 mm (0.10 in)	37 years	19 of 100 (Routine)

Climate Trend

16 complete years, 2008 to 2025

One stripe for each of 16 complete years at Chalk Creek #2, 2008 to 2025. Blue stripes are years cooler than the station's own mean of 5.3 C (41.5 F); red stripes are warmer. The coolest year was 2011, at 4.2 C (39.6 F), and the warmest was 2025, at 6.4 C (43.5 F). The strongest colour marks a difference of 1.2 C (2.2 F).

Annual mean temperature at Chalk Creek #2 as warming stripes, 2008 to 2025
Year	Annual mean temperature	Difference from the station mean
2008	4.3 C	-1.01 C
2009	4.5 C	-0.73 C
2010	4.7 C	-0.54 C
2011	4.2 C	-1.04 C
2012	6.1 C	+0.86 C
2013	4.7 C	-0.62 C
2014	5.4 C	+0.15 C
2015	6.0 C	+0.71 C
2016	6.0 C	+0.68 C
2017	5.8 C	+0.55 C
2018	5.7 C	+0.39 C
2019	4.4 C	-0.86 C
2020	5.5 C	+0.23 C
2021	5.8 C	+0.51 C
2022	4.9 C	-0.42 C
2025	6.4 C	+1.10 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 #2: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	29.6 C (85.3 F)	2026	27.6 C (81.7 F)	20
Coldest night (TNn)	-28.8 C (-19.8 F)	2011	-22.9 C (-9.2 F)	20
Wettest day (Rx1day)	55.9 mm (2.2 in)	2014	30.5 mm (1.2 in)	49
Wettest five days (Rx5day)	106.6 mm (4.2 in)	2021	58.4 mm (2.3 in)	49
Longest dry spell (CDD)	92 days	2020	24 days	49

Hottest day (TXx)

The hottest day of the year at Chalk Creek #2, 1978 to 2026. The record is 29.6 C (85.3 F) in 2026, marked on the chart; the median year is 27.6 C (81.7 F).

Hottest day (TXx) at Chalk Creek #2 by year
Year	Hottest day (TXx)
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	28.0 C (82.4 F)
2008	26.9 C (80.4 F)
2009	27.5 C (81.5 F)
2010	27.0 C (80.6 F)
2011	27.0 C (80.6 F)
2012	27.3 C (81.1 F)
2013	28.6 C (83.5 F)
2014	27.6 C (81.7 F)
2015	27.6 C (81.7 F)
2016	27.4 C (81.3 F)
2017	27.1 C (80.8 F)
2018	27.6 C (81.7 F)
2019	27.0 C (80.6 F)
2020	28.9 C (84.0 F)
2021	28.5 C (83.3 F)
2022	27.6 C (81.7 F)
2023	27.1 C (80.8 F)
2024	28.5 C (83.3 F)
2025	28.9 C (84.0 F)
2026	29.6 C (85.3 F)

Coldest night (TNn)

The coldest night of the year at Chalk Creek #2, 1978 to 2026. The record is -28.8 C (-19.8 F) in 2011, marked on the chart; the median year is -22.9 C (-9.2 F).

Coldest night (TNn) at Chalk Creek #2 by year
Year	Coldest night (TNn)
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	-20.2 C (-4.4 F)
2008	-23.2 C (-9.8 F)
2009	-24.0 C (-11.2 F)
2010	-24.2 C (-11.6 F)
2011	-28.8 C (-19.8 F)
2012	-19.8 C (-3.6 F)
2013	-26.7 C (-16.1 F)
2014	-26.4 C (-15.5 F)
2015	-21.1 C (-6.0 F)
2016	-22.4 C (-8.3 F)
2017	-24.3 C (-11.7 F)
2018	-21.9 C (-7.4 F)
2019	-23.4 C (-10.1 F)
2020	-20.9 C (-5.6 F)
2021	-18.6 C (-1.5 F)
2022	-22.7 C (-8.9 F)
2023	-23.1 C (-9.6 F)
2024	-16.1 C (3.0 F)
2025	-24.3 C (-11.7 F)
2026	-16.8 C (1.8 F)

Wettest day (Rx1day)

The wettest day of the year at Chalk Creek #2, 1978 to 2026. The record is 55.9 mm (2.2 in) in 2014, marked on the chart; the median year is 30.5 mm (1.2 in).

Wettest day (Rx1day) at Chalk Creek #2 by year
Year	Wettest day (Rx1day)
1978	17.8 mm (0.7 in)
1979	40.6 mm (1.6 in)
1980	30.5 mm (1.2 in)
1981	30.5 mm (1.2 in)
1982	50.8 mm (2.0 in)
1983	22.9 mm (0.9 in)
1984	30.5 mm (1.2 in)
1985	35.6 mm (1.4 in)
1986	30.5 mm (1.2 in)
1987	25.4 mm (1.0 in)
1988	25.4 mm (1.0 in)
1989	30.5 mm (1.2 in)
1990	25.4 mm (1.0 in)
1991	30.5 mm (1.2 in)
1992	20.3 mm (0.8 in)
1993	35.6 mm (1.4 in)
1994	33.0 mm (1.3 in)
1995	35.6 mm (1.4 in)
1996	25.4 mm (1.0 in)
1997	25.4 mm (1.0 in)
1998	43.2 mm (1.7 in)
1999	22.9 mm (0.9 in)
2000	25.4 mm (1.0 in)
2001	30.5 mm (1.2 in)
2002	27.9 mm (1.1 in)
2003	22.9 mm (0.9 in)
2004	45.7 mm (1.8 in)
2005	38.1 mm (1.5 in)
2006	25.4 mm (1.0 in)
2007	25.4 mm (1.0 in)
2008	43.2 mm (1.7 in)
2009	33.0 mm (1.3 in)
2010	35.6 mm (1.4 in)
2011	27.9 mm (1.1 in)
2012	30.5 mm (1.2 in)
2013	27.9 mm (1.1 in)
2014	55.9 mm (2.2 in)
2015	25.4 mm (1.0 in)
2016	35.6 mm (1.4 in)
2017	40.6 mm (1.6 in)
2018	20.3 mm (0.8 in)
2019	25.4 mm (1.0 in)
2020	38.1 mm (1.5 in)
2021	40.6 mm (1.6 in)
2022	30.5 mm (1.2 in)
2023	25.4 mm (1.0 in)
2024	22.9 mm (0.9 in)
2025	30.5 mm (1.2 in)
2026	35.6 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Chalk Creek #2, 1978 to 2026. The record is 106.6 mm (4.2 in) in 2021, marked on the chart; the median year is 58.4 mm (2.3 in).

Wettest five days (Rx5day) at Chalk Creek #2 by year
Year	Wettest five days (Rx5day)
1978	38.1 mm (1.5 in)
1979	73.7 mm (2.9 in)
1980	78.7 mm (3.1 in)
1981	55.9 mm (2.2 in)
1982	86.4 mm (3.4 in)
1983	45.7 mm (1.8 in)
1984	63.5 mm (2.5 in)
1985	68.6 mm (2.7 in)
1986	68.6 mm (2.7 in)
1987	40.6 mm (1.6 in)
1988	55.9 mm (2.2 in)
1989	53.3 mm (2.1 in)
1990	40.6 mm (1.6 in)
1991	58.4 mm (2.3 in)
1992	55.9 mm (2.2 in)
1993	71.2 mm (2.8 in)
1994	63.5 mm (2.5 in)
1995	56.0 mm (2.2 in)
1996	53.3 mm (2.1 in)
1997	48.4 mm (1.9 in)
1998	76.2 mm (3.0 in)
1999	50.7 mm (2.0 in)
2000	40.7 mm (1.6 in)
2001	63.5 mm (2.5 in)
2002	45.6 mm (1.8 in)
2003	71.1 mm (2.8 in)
2004	88.8 mm (3.5 in)
2005	86.4 mm (3.4 in)
2006	53.3 mm (2.1 in)
2007	53.3 mm (2.1 in)
2008	58.4 mm (2.3 in)
2009	55.9 mm (2.2 in)
2010	78.8 mm (3.1 in)
2011	58.5 mm (2.3 in)
2012	45.6 mm (1.8 in)
2013	45.6 mm (1.8 in)
2014	83.8 mm (3.3 in)
2015	45.7 mm (1.8 in)
2016	66.1 mm (2.6 in)
2017	96.5 mm (3.8 in)
2018	60.9 mm (2.4 in)
2019	58.4 mm (2.3 in)
2020	60.9 mm (2.4 in)
2021	106.6 mm (4.2 in)
2022	50.8 mm (2.0 in)
2023	53.3 mm (2.1 in)
2024	43.3 mm (1.7 in)
2025	53.3 mm (2.1 in)
2026	66.0 mm (2.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Chalk Creek #2, 1978 to 2026. The record is 92 days in 2020, marked on the chart; the median year is 24 days.

Longest dry spell (CDD) at Chalk Creek #2 by year
Year	Longest dry spell (CDD)
1978	31 days
1979	54 days
1980	64 days
1981	24 days
1982	19 days
1983	13 days
1984	46 days
1985	26 days
1986	21 days
1987	20 days
1988	34 days
1989	28 days
1990	19 days
1991	19 days
1992	26 days
1993	21 days
1994	51 days
1995	24 days
1996	25 days
1997	16 days
1998	10 days
1999	20 days
2000	16 days
2001	36 days
2002	42 days
2003	26 days
2004	18 days
2005	23 days
2006	24 days
2007	19 days
2008	44 days
2009	14 days
2010	20 days
2011	15 days
2012	40 days
2013	37 days
2014	18 days
2015	15 days
2016	45 days
2017	27 days
2018	38 days
2019	19 days
2020	92 days
2021	31 days
2022	18 days
2023	15 days
2024	29 days
2025	52 days
2026	28 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.

Rainfall Return Levels

47 years, 1979 to 2025

A day with at least 29.8 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 59.6 mm (2.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Chalk Creek #2: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	29.8 mm (1.2 in)
5 years	36.9 mm (1.5 in)
10 years	41.9 mm (1.6 in)
25 years	48.6 mm (1.9 in)
50 years	54.0 mm (2.1 in)	Longer than the 47 years of record
100 years	59.6 mm (2.3 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: 55.9 mm (2.2 in) in 2014; 50.8 mm (2.0 in) in 1982; 45.7 mm (1.8 in) in 2004.

Download the Data

Data for Chalk Creek #2 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chalk Creek #2 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).