Wapiti 1WSW Weather Records (USC00489467)

Record envelope, standing records and threshold days for Wapiti 1WSW (USC00489467), Wyoming, United States, with 69 years of record.

Key Facts for Wapiti 1WSW

Wapiti 1WSW (USC00489467) is a weather station in Wyoming, United States at 44.46 latitude and -109.42 longitude, 1,694 m (5,558 ft) above sea level.
The station reports from 1950 to 2018, 69 years of record.
1,464 records set at Wapiti 1WSW still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Wyoming, United States, 44.46 latitude, -109.42 longitude.
Elevation: 1,694 m (5,558 ft).
Period of record: 1950 to 2018, 69 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Wapiti 1WSW. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Wapiti 1WSW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	17.8 C (64.0 F)	-33.3 C (-27.9 F)	n/a	n/a
Feb	19.4 C (66.9 F)	-33.3 C (-27.9 F)	n/a	n/a
Mar	22.8 C (73.0 F)	-25.0 C (-13.0 F)	n/a	n/a
Apr	26.7 C (80.1 F)	-15.0 C (5.0 F)	n/a	n/a
May	31.1 C (88.0 F)	-7.2 C (19.0 F)	n/a	n/a
Jun	33.9 C (93.0 F)	-1.7 C (28.9 F)	n/a	n/a
Jul	37.8 C (100.0 F)	2.2 C (36.0 F)	n/a	n/a
Aug	36.7 C (98.1 F)	-6.7 C (19.9 F)	n/a	n/a
Sep	32.8 C (91.0 F)	-5.6 C (21.9 F)	n/a	n/a
Oct	29.4 C (84.9 F)	-18.3 C (-0.9 F)	n/a	n/a
Nov	22.8 C (73.0 F)	-28.3 C (-18.9 F)	n/a	n/a
Dec	18.3 C (64.9 F)	-38.9 C (-38.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Wapiti 1WSW still stand. 1996 holds the most, with 81.

Standing records at Wapiti 1WSW by the year they were set
Year set	Standing records
1989	41
1990	68
1991	56
1992	69
1993	79
1994	52
1995	55
1996	81
1997	55
1998	59
1999	63
2000	55
2001	59
2002	63
2003	77
2004	44
2005	56
2006	50
2007	34
2008	24
2009	61
2010	34
2011	40
2012	14
2013	1
2014	41
2015	52
2016	54
2017	25
2018	2

Wettest Day of Each Month

May: 34.5 mm (1.4 in)

The wettest day on record for each calendar month at Wapiti 1WSW. The most was 34.5 mm (1.4 in) on 17 May 2000.

Record daily precipitation for each month at Wapiti 1WSW
Month	Record daily precipitation (mm)	Date
Jan	21.8 mm (0.9 in)	12 January 2000
Feb	12.7 mm (0.5 in)	8 February 2017
Mar	19.6 mm (0.8 in)	27 March 2003
Apr	26.9 mm (1.1 in)	20 April 2016
May	34.5 mm (1.4 in)	17 May 2000
Jun	31.5 mm (1.2 in)	15 June 1992
Jul	26.2 mm (1.0 in)	17 July 2002
Aug	26.9 mm (1.1 in)	7 August 1989
Sep	33.0 mm (1.3 in)	8 September 1991
Oct	18.0 mm (0.7 in)	3 October 1994
Nov	18.3 mm (0.7 in)	15 November 2014
Dec	21.6 mm (0.9 in)	5 December 2016

Period of Record Coverage

1989 to 2018

30 years of record at Wapiti 1WSW, 1989 to 2018. 16 years have data for under 90 percent of days and are left out of rankings: 1989, 1995, 2002, 2006, 2007, 2008, 2009, 2010 and others.

Days with data per year at Wapiti 1WSW
Year	Days with data	Share of year	Complete
1989	212	58%	No
1990	364	100%	Yes
1991	362	99%	Yes
1992	366	100%	Yes
1993	354	97%	Yes
1994	340	93%	Yes
1995	294	81%	No
1996	347	95%	Yes
1997	346	95%	Yes
1998	341	93%	Yes
1999	359	98%	Yes
2000	349	95%	Yes
2001	351	96%	Yes
2002	315	86%	No
2003	356	98%	Yes
2004	344	94%	Yes
2005	337	92%	Yes
2006	288	79%	No
2007	256	70%	No
2008	226	62%	No
2009	278	76%	No
2010	254	70%	No
2011	238	65%	No
2012	161	44%	No
2013	32	9%	No
2014	139	38%	No
2015	312	85%	No
2016	296	81%	No
2017	208	57%	No
2018	6	2%	No

Latest Records

No records were set at this station in the latest data.

Climate Trend

12 complete years, 1990 to 2004

One stripe for each of 12 complete years at Wapiti 1WSW, 1990 to 2004. Blue stripes are years cooler than the station's own mean of 7.2 C (44.9 F); red stripes are warmer. The coolest year was 1993, at 5.5 C (41.9 F), and the warmest was 1999, at 8.2 C (46.8 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Wapiti 1WSW as warming stripes, 1990 to 2004
Year	Annual mean temperature	Difference from the station mean
1990	6.9 C	-0.30 C
1991	6.9 C	-0.30 C
1992	7.1 C	-0.07 C
1993	5.5 C	-1.67 C
1996	6.0 C	-1.11 C
1997	7.0 C	-0.19 C
1998	7.3 C	+0.18 C
1999	8.2 C	+1.09 C
2000	7.5 C	+0.36 C
2001	8.1 C	+0.93 C
2003	7.8 C	+0.64 C
2004	7.6 C	+0.46 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

1950 to 2018

Yearly extremes at Wapiti 1WSW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	2005	33.9 C (93.0 F)	30
Coldest night (TNn)	-38.9 C (-38.0 F)	1990	-27.8 C (-18.0 F)	30
Wettest day (Rx1day)	34.5 mm (1.4 in)	2000	18.5 mm (0.7 in)	31
Wettest five days (Rx5day)	63.5 mm (2.5 in)	1992	28.2 mm (1.1 in)	31
Longest dry spell (CDD)	65 days	1992	30 days	31

Hottest day (TXx)

The hottest day of the year at Wapiti 1WSW, 1950 to 2018. The record is 37.8 C (100.0 F) in 2005, marked on the chart; the median year is 33.9 C (93.0 F).

Hottest day (TXx) at Wapiti 1WSW by year
Year	Hottest day (TXx)
1950	n/a
1989	36.1 C (97.0 F)
1990	36.1 C (97.0 F)
1991	32.8 C (91.0 F)
1992	32.2 C (90.0 F)
1993	30.0 C (86.0 F)
1994	33.3 C (91.9 F)
1995	33.3 C (91.9 F)
1996	32.8 C (91.0 F)
1997	31.7 C (89.1 F)
1998	35.0 C (95.0 F)
1999	33.9 C (93.0 F)
2000	35.0 C (95.0 F)
2001	36.7 C (98.1 F)
2002	36.7 C (98.1 F)
2003	35.6 C (96.1 F)
2004	33.3 C (91.9 F)
2005	37.8 C (100.0 F)
2006	36.7 C (98.1 F)
2007	36.1 C (97.0 F)
2008	33.9 C (93.0 F)
2009	34.4 C (93.9 F)
2010	33.3 C (91.9 F)
2011	31.1 C (88.0 F)
2012	29.4 C (84.9 F)
2013	12.2 C (54.0 F)
2014	31.7 C (89.1 F)
2015	34.4 C (93.9 F)
2016	34.4 C (93.9 F)
2017	33.9 C (93.0 F)
2018	33.3 C (91.9 F)

Coldest night (TNn)

The coldest night of the year at Wapiti 1WSW, 1950 to 2018. The record is -38.9 C (-38.0 F) in 1990, marked on the chart; the median year is -27.8 C (-18.0 F).

Coldest night (TNn) at Wapiti 1WSW by year
Year	Coldest night (TNn)
1950	n/a
1989	-32.2 C (-26.0 F)
1990	-38.9 C (-38.0 F)
1991	-29.4 C (-20.9 F)
1992	-28.3 C (-18.9 F)
1993	-28.3 C (-18.9 F)
1994	-27.8 C (-18.0 F)
1995	-26.7 C (-16.1 F)
1996	-33.3 C (-27.9 F)
1997	-33.3 C (-27.9 F)
1998	-32.2 C (-26.0 F)
1999	-21.7 C (-7.1 F)
2000	-25.6 C (-14.1 F)
2001	-26.1 C (-15.0 F)
2002	-30.0 C (-22.0 F)
2003	-30.6 C (-23.1 F)
2004	-30.6 C (-23.1 F)
2005	-26.7 C (-16.1 F)
2006	-27.8 C (-18.0 F)
2007	-28.9 C (-20.0 F)
2008	-27.2 C (-17.0 F)
2009	-28.9 C (-20.0 F)
2010	-27.2 C (-17.0 F)
2011	-27.2 C (-17.0 F)
2012	-22.2 C (-8.0 F)
2013	-23.9 C (-11.0 F)
2014	-27.8 C (-18.0 F)
2015	-22.2 C (-8.0 F)
2016	-32.2 C (-26.0 F)
2017	-27.2 C (-17.0 F)
2018	7.2 C (45.0 F)

Wettest day (Rx1day)

The wettest day of the year at Wapiti 1WSW, 1950 to 2018. The record is 34.5 mm (1.4 in) in 2000, marked on the chart; the median year is 18.5 mm (0.7 in).

Wettest day (Rx1day) at Wapiti 1WSW by year
Year	Wettest day (Rx1day)
1950	10.2 mm (0.4 in)
1989	26.9 mm (1.1 in)
1990	15.7 mm (0.6 in)
1991	33.0 mm (1.3 in)
1992	31.5 mm (1.2 in)
1993	24.9 mm (1.0 in)
1994	18.0 mm (0.7 in)
1995	18.5 mm (0.7 in)
1996	24.4 mm (1.0 in)
1997	17.0 mm (0.7 in)
1998	20.3 mm (0.8 in)
1999	16.5 mm (0.6 in)
2000	34.5 mm (1.4 in)
2001	10.2 mm (0.4 in)
2002	26.2 mm (1.0 in)
2003	19.6 mm (0.8 in)
2004	16.0 mm (0.6 in)
2005	24.1 mm (0.9 in)
2006	11.7 mm (0.5 in)
2007	25.1 mm (1.0 in)
2008	28.4 mm (1.1 in)
2009	19.1 mm (0.8 in)
2010	19.3 mm (0.8 in)
2011	17.0 mm (0.7 in)
2012	13.7 mm (0.5 in)
2013	6.9 mm (0.27 in)
2014	18.3 mm (0.7 in)
2015	17.3 mm (0.7 in)
2016	26.9 mm (1.1 in)
2017	16.5 mm (0.6 in)
2018	0.0 mm (0.00 in)

Wettest five days (Rx5day)

The wettest five days of the year at Wapiti 1WSW, 1950 to 2018. The record is 63.5 mm (2.5 in) in 1992, marked on the chart; the median year is 28.2 mm (1.1 in).

Wettest five days (Rx5day) at Wapiti 1WSW by year
Year	Wettest five days (Rx5day)
1950	15.0 mm (0.6 in)
1989	27.4 mm (1.1 in)
1990	36.3 mm (1.4 in)
1991	44.5 mm (1.8 in)
1992	63.5 mm (2.5 in)
1993	36.0 mm (1.4 in)
1994	27.2 mm (1.1 in)
1995	32.7 mm (1.3 in)
1996	34.6 mm (1.4 in)
1997	29.3 mm (1.2 in)
1998	37.7 mm (1.5 in)
1999	21.3 mm (0.8 in)
2000	36.3 mm (1.4 in)
2001	17.0 mm (0.7 in)
2002	32.8 mm (1.3 in)
2003	24.5 mm (1.0 in)
2004	28.2 mm (1.1 in)
2005	36.8 mm (1.4 in)
2006	15.3 mm (0.6 in)
2007	25.1 mm (1.0 in)
2008	16.3 mm (0.6 in)
2009	51.5 mm (2.0 in)
2010	19.3 mm (0.8 in)
2011	40.2 mm (1.6 in)
2012	22.6 mm (0.9 in)
2013	10.4 mm (0.4 in)
2014	28.5 mm (1.1 in)
2015	22.1 mm (0.9 in)
2016	47.0 mm (1.9 in)
2017	24.2 mm (1.0 in)
2018	0.0 mm (0.00 in)

Longest dry spell (CDD)

The longest dry spell of the year at Wapiti 1WSW, 1950 to 2018. The record is 65 days in 1992, marked on the chart; the median year is 30 days.

Longest dry spell (CDD) at Wapiti 1WSW by year
Year	Longest dry spell (CDD)
1950	24 days
1989	28 days
1990	49 days
1991	28 days
1992	65 days
1993	38 days
1994	37 days
1995	27 days
1996	26 days
1997	22 days
1998	43 days
1999	53 days
2000	45 days
2001	35 days
2002	27 days
2003	25 days
2004	60 days
2005	33 days
2006	38 days
2007	41 days
2008	28 days
2009	31 days
2010	31 days
2011	30 days
2012	29 days
2013	16 days
2014	11 days
2015	24 days
2016	38 days
2017	19 days
2018	6 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.

Download the Data

Data for Wapiti 1WSW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Wapiti 1WSW 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).