Record envelope, standing records and threshold days for Wright 12W (USC00489805), Wyoming, United States, with 31 years of record.
Key Facts for Wright 12W
Wright 12W (USC00489805) is a weather station in Wyoming, United States at 43.75 latitude and -105.73 longitude, 1,530 m (5,020 ft) above sea level.
The station reports from 1991 to 2021, 31 years of record.
1,464 records set at Wright 12W still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Wright 12W set a daily record high maximum temperature of 35.6 C (96.1 F) on 5 July 2021.
About the Station
Location: Wyoming, United States, 43.75 latitude, -105.73 longitude.
Elevation: 1,530 m (5,020 ft).
Period of record: 1991 to 2021, 31 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Wright 12W. 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 Wright 12W, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.0 C (59.0 F)
-34.4 C (-29.9 F)
n/a
n/a
Feb
18.3 C (64.9 F)
-39.4 C (-38.9 F)
n/a
n/a
Mar
24.4 C (75.9 F)
-30.0 C (-22.0 F)
n/a
n/a
Apr
28.3 C (82.9 F)
-23.3 C (-9.9 F)
n/a
n/a
May
32.8 C (91.0 F)
-11.1 C (12.0 F)
n/a
n/a
Jun
39.4 C (102.9 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
39.4 C (102.9 F)
3.3 C (37.9 F)
n/a
n/a
Aug
38.3 C (100.9 F)
-1.7 C (28.9 F)
n/a
n/a
Sep
36.1 C (97.0 F)
-6.1 C (21.0 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-26.1 C (-15.0 F)
n/a
n/a
Nov
23.9 C (75.0 F)
-29.4 C (-20.9 F)
n/a
n/a
Dec
17.8 C (64.0 F)
-35.6 C (-32.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Wright 12W still stand. 1996 holds the most, with 75.
Standing records at Wright 12W by the year they were set
Year set
Standing records
1991
29
1992
62
1993
51
1994
53
1995
57
1996
75
1997
51
1998
49
1999
42
2000
59
2001
35
2002
62
2003
50
2004
36
2005
47
2006
47
2007
39
2008
35
2009
67
2010
36
2011
32
2012
54
2013
41
2014
49
2015
46
2016
42
2017
51
2018
42
2019
37
2020
51
2021
37
Wettest Day of Each Month
Jun: 70.9 mm (2.8 in)
The wettest day on record for each calendar month at Wright 12W. The most was 70.9 mm (2.8 in) on 25 June 2015.
Record daily precipitation for each month at Wright 12W
Month
Record daily precipitation (mm)
Date
Jan
13.0 mm (0.5 in)
28 January 2000
Feb
13.0 mm (0.5 in)
7 February 2001
Mar
49.3 mm (1.9 in)
28 March 2007
Apr
30.0 mm (1.2 in)
26 April 1994
May
47.8 mm (1.9 in)
28 May 2018
Jun
70.9 mm (2.8 in)
25 June 2015
Jul
41.7 mm (1.6 in)
5 July 2019
Aug
20.1 mm (0.8 in)
5 August 2019
Sep
26.9 mm (1.1 in)
21 September 1998
Oct
56.6 mm (2.2 in)
17 October 1998
Nov
14.0 mm (0.6 in)
19 November 2011
Dec
15.5 mm (0.6 in)
31 December 2018
Period of Record Coverage
1991 to 2021
Complete yearUnder 90 percent of days
31 years of record at Wright 12W, 1991 to 2021. 2 years have data for under 90 percent of days and are left out of rankings: 1991, 2021.
Cooler than the station meanWarmer than the station mean
One stripe for each of 26 complete years at Wright 12W, 1992 to 2020. Blue stripes are years cooler than the station's own mean of 6.9 C (44.4 F); red stripes are warmer. The coolest year was 1993, at 4.9 C (40.9 F), and the warmest was 2012, at 8.6 C (47.4 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Wright 12W as warming stripes, 1992 to 2020
Year
Annual mean temperature
Difference from the station mean
1992
7.5 C
+0.56 C
1993
4.9 C
-1.95 C
1995
6.6 C
-0.33 C
1996
5.9 C
-1.00 C
1997
6.6 C
-0.32 C
1998
7.4 C
+0.53 C
1999
7.9 C
+1.01 C
2000
7.1 C
+0.19 C
2001
7.7 C
+0.78 C
2002
6.5 C
-0.44 C
2003
7.3 C
+0.45 C
2004
7.5 C
+0.61 C
2007
7.5 C
+0.57 C
2008
6.0 C
-0.92 C
2009
5.9 C
-1.02 C
2010
6.9 C
-0.03 C
2011
6.3 C
-0.57 C
2012
8.6 C
+1.66 C
2013
6.8 C
-0.14 C
2014
6.5 C
-0.43 C
2015
7.9 C
+1.03 C
2016
8.3 C
+1.42 C
2017
6.6 C
-0.31 C
2018
6.6 C
-0.25 C
2019
5.4 C
-1.49 C
2020
7.4 C
+0.47 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
1991 to 2021
Yearly extremes at Wright 12W: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
39.4 C (102.9 F)
2006
37.2 C (99.0 F)
31
Coldest night (TNn)
-39.4 C (-38.9 F)
1996
-30.6 C (-23.1 F)
31
Wettest day (Rx1day)
70.9 mm (2.8 in)
2015
28.2 mm (1.1 in)
31
Wettest five days (Rx5day)
93.8 mm (3.7 in)
2008
43.6 mm (1.7 in)
31
Longest dry spell (CDD)
53 days
1992
30 days
31
Hottest day (TXx)
The hottest day of the year at Wright 12W, 1991 to 2021. The record is 39.4 C (102.9 F) in 2006, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Wright 12W by year
Year
Hottest day (TXx)
1991
36.7 C (98.1 F)
1992
35.0 C (95.0 F)
1993
35.0 C (95.0 F)
1994
36.1 C (97.0 F)
1995
37.8 C (100.0 F)
1996
37.2 C (99.0 F)
1997
35.6 C (96.1 F)
1998
38.3 C (100.9 F)
1999
37.2 C (99.0 F)
2000
38.3 C (100.9 F)
2001
38.3 C (100.9 F)
2002
38.3 C (100.9 F)
2003
38.3 C (100.9 F)
2004
36.1 C (97.0 F)
2005
38.9 C (102.0 F)
2006
39.4 C (102.9 F)
2007
37.2 C (99.0 F)
2008
36.7 C (98.1 F)
2009
35.0 C (95.0 F)
2010
36.7 C (98.1 F)
2011
36.7 C (98.1 F)
2012
38.9 C (102.0 F)
2013
37.2 C (99.0 F)
2014
36.1 C (97.0 F)
2015
36.1 C (97.0 F)
2016
38.3 C (100.9 F)
2017
36.7 C (98.1 F)
2018
38.3 C (100.9 F)
2019
35.0 C (95.0 F)
2020
36.7 C (98.1 F)
2021
39.4 C (102.9 F)
Coldest night (TNn)
The coldest night of the year at Wright 12W, 1991 to 2021. The record is -39.4 C (-38.9 F) in 1996, marked on the chart; the median year is -30.6 C (-23.1 F).
Coldest night (TNn) at Wright 12W by year
Year
Coldest night (TNn)
1991
-25.6 C (-14.1 F)
1992
-28.9 C (-20.0 F)
1993
-31.7 C (-25.1 F)
1994
-31.1 C (-24.0 F)
1995
-27.8 C (-18.0 F)
1996
-39.4 C (-38.9 F)
1997
-34.4 C (-29.9 F)
1998
-35.6 C (-32.1 F)
1999
-20.0 C (-4.0 F)
2000
-31.1 C (-24.0 F)
2001
-28.9 C (-20.0 F)
2002
-25.6 C (-14.1 F)
2003
-31.1 C (-24.0 F)
2004
-28.9 C (-20.0 F)
2005
-30.6 C (-23.1 F)
2006
-35.6 C (-32.1 F)
2007
-27.2 C (-17.0 F)
2008
-28.9 C (-20.0 F)
2009
-33.3 C (-27.9 F)
2010
-26.7 C (-16.1 F)
2011
-31.1 C (-24.0 F)
2012
-23.3 C (-9.9 F)
2013
-30.0 C (-22.0 F)
2014
-36.1 C (-33.0 F)
2015
-26.7 C (-16.1 F)
2016
-32.2 C (-26.0 F)
2017
-26.7 C (-16.1 F)
2018
-33.3 C (-27.9 F)
2019
-32.2 C (-26.0 F)
2020
-26.1 C (-15.0 F)
2021
-33.9 C (-29.0 F)
Wettest day (Rx1day)
The wettest day of the year at Wright 12W, 1991 to 2021. The record is 70.9 mm (2.8 in) in 2015, marked on the chart; the median year is 28.2 mm (1.1 in).
Wettest day (Rx1day) at Wright 12W by year
Year
Wettest day (Rx1day)
1991
7.9 mm (0.31 in)
1992
17.3 mm (0.7 in)
1993
38.6 mm (1.5 in)
1994
30.0 mm (1.2 in)
1995
30.2 mm (1.2 in)
1996
24.9 mm (1.0 in)
1997
19.1 mm (0.8 in)
1998
56.6 mm (2.2 in)
1999
37.3 mm (1.5 in)
2000
27.4 mm (1.1 in)
2001
16.8 mm (0.7 in)
2002
20.8 mm (0.8 in)
2003
17.3 mm (0.7 in)
2004
28.7 mm (1.1 in)
2005
25.9 mm (1.0 in)
2006
27.7 mm (1.1 in)
2007
49.3 mm (1.9 in)
2008
41.1 mm (1.6 in)
2009
29.2 mm (1.1 in)
2010
19.8 mm (0.8 in)
2011
35.8 mm (1.4 in)
2012
31.0 mm (1.2 in)
2013
44.2 mm (1.7 in)
2014
24.1 mm (0.9 in)
2015
70.9 mm (2.8 in)
2016
22.4 mm (0.9 in)
2017
28.2 mm (1.1 in)
2018
47.8 mm (1.9 in)
2019
41.7 mm (1.6 in)
2020
25.4 mm (1.0 in)
2021
25.9 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Wright 12W, 1991 to 2021. The record is 93.8 mm (3.7 in) in 2008, marked on the chart; the median year is 43.6 mm (1.7 in).
Wettest five days (Rx5day) at Wright 12W by year
Year
Wettest five days (Rx5day)
1991
12.5 mm (0.5 in)
1992
40.9 mm (1.6 in)
1993
49.8 mm (2.0 in)
1994
65.0 mm (2.6 in)
1995
63.7 mm (2.5 in)
1996
69.6 mm (2.7 in)
1997
37.9 mm (1.5 in)
1998
59.1 mm (2.3 in)
1999
42.9 mm (1.7 in)
2000
33.0 mm (1.3 in)
2001
52.4 mm (2.1 in)
2002
36.8 mm (1.4 in)
2003
34.5 mm (1.4 in)
2004
34.8 mm (1.4 in)
2005
71.4 mm (2.8 in)
2006
35.0 mm (1.4 in)
2007
76.8 mm (3.0 in)
2008
93.8 mm (3.7 in)
2009
31.5 mm (1.2 in)
2010
49.7 mm (2.0 in)
2011
89.9 mm (3.5 in)
2012
33.1 mm (1.3 in)
2013
69.6 mm (2.7 in)
2014
35.0 mm (1.4 in)
2015
72.4 mm (2.9 in)
2016
31.1 mm (1.2 in)
2017
43.6 mm (1.7 in)
2018
66.6 mm (2.6 in)
2019
93.2 mm (3.7 in)
2020
34.5 mm (1.4 in)
2021
37.8 mm (1.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Wright 12W, 1991 to 2021. The record is 53 days in 1992, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at Wright 12W by year
Year
Longest dry spell (CDD)
1991
42 days
1992
53 days
1993
23 days
1994
31 days
1995
25 days
1996
27 days
1997
24 days
1998
29 days
1999
32 days
2000
26 days
2001
33 days
2002
37 days
2003
41 days
2004
28 days
2005
33 days
2006
37 days
2007
36 days
2008
22 days
2009
27 days
2010
31 days
2011
21 days
2012
30 days
2013
36 days
2014
21 days
2015
39 days
2016
32 days
2017
29 days
2018
29 days
2019
14 days
2020
34 days
2021
24 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
26 years with a frost
Across 26 years with a frost, the median last spring frost at Wright 12W falls on 25 May and the median first autumn frost on 21 September, which leaves a median of 114 days between them.
Fitted over all years, the growing season changes by +1.7 days per decade at this station.
Frost dates and growing season at Wright 12W
Measure
Median, all years
Earliest period
Recent period (1992 to 2020)
Recent against earliest
Fitted trend
Last spring frost
25 May
n/a
25 May
n/a
-3.5 days per decade
First autumn frost
21 September
n/a
21 September
n/a
-1.8 days per decade
Growing days
114 days
n/a
114 days
n/a
+1.7 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.
Download the Data
Data for Wright 12W standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Wright 12W 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.