Lander, WY

Wyoming · Records since 1891–2026

☀️ 77°F Feels like 70°
Currently in Lander
As of 12:30 PM MDT

Records for September 7

🔥 Record High

97°F

September 7, 2022

+18° from 79° normal

❄ Record Low

30°F

September 7, 1898

-18° from 48° normal
🌞 Normal high: 79°F 🌑 Normal low: 48°F 1991–2020 normals

All-Time Records — Lander

🔥
102°F
Hottest Day Ever
Jul 12, 2026
❄
-40°F
Coldest Day Ever
Feb 8, 1936
🌧
3.48"
Wettest Day Ever
Jun 11, 1947
☃
28.6"
Most Snow in One Day
Apr 22, 1999

Top 10 Record Highs — September 7

# Temp Date
🏆 97°F September 7, 2022
2 92°F September 7, 1998
3 92°F September 7, 1978
4 92°F September 7, 1959
5 91°F September 7, 1979
6 91°F September 7, 1977
7 90°F September 7, 1983
8 90°F September 7, 1908
9 89°F September 7, 2005
10 89°F September 7, 1955

Top 5 Record Lows — September 7

# Temp Date
🥶 30°F September 7, 1898
2 31°F September 7, 1895
3 32°F September 7, 2020
4 33°F September 7, 1929
5 34°F September 7, 1941
About this data — Records are sourced from the NOAA Threadex dataset via RCC ACIS, a quality-controlled record for long-term climate stations. Threadex adjusts for station relocations and observation-time changes, making records comparable across all years since 1891–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Lander

threshold: 92°F (90th percentile of historical Jun–Aug highs)
4.4
Avg heat wave length
days (historical)
96°
Avg peak temp
during heat waves
1
Dangerous nights 2026
Overnights ≥ 70°F
4
Heat waves 2026
so far

2026 Daily High Temperature vs Normal

Year to date
Above normal Below normal

184 of 249 days with data were above the 1991–2020 normal high for their date.

Days ≥ 90°F Per Year

1891–2026
38
2026 so far
20
Avg/year 1970–2025
34
Avg/year (last 10 complete)
51
Most in a year (2020)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Lander

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 15, 2007 – Jul 24, 2007 10 100°F (Jul 22) 96°F 62°F
2 Jun 28, 2001 – Jul 6, 2001 9 98°F (Jul 5) 96°F 61°F
3 Jul 26, 2008 – Aug 3, 2008 9 98°F (Aug 1) 95°F 59°F
4 Jun 24, 2002 – Jul 2, 2002 9 97°F (Jun 28) 95°F 60°F
5 Jul 22, 1966 – Jul 30, 1966 9 95°F (Jul 24) 94°F 59°F
6 Aug 1, 2001 – Aug 8, 2001 8 100°F (Aug 6) 95°F 61°F
7 Jun 19, 1988 – Jun 26, 1988 8 99°F (Jun 24) 95°F 64°F
8 Jun 23, 1990 – Jun 30, 1990 8 99°F (Jun 26) 97°F 61°F
9 Jul 16, 1901 – Jul 23, 1901 8 97°F (Jul 19) 94°F 55°F
10 Jul 4, 1976 – Jul 11, 1976 8 97°F (Jul 9) 94°F 59°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

Nights where the overnight low exceeded the 1991–2020 normal low

68
2026 total
above-normal nights
49.1
Avg / summer
1970–2020
72
Most in a summer
2007

Above-Normal Summer Nights Per Year

Average June–August Low by Decade

Overnight lows · complete decades only

Precipitation

Actual vs. 1991–2020 full-month and full-season normals

6.36"
2026 YTD
Normal: 9.55"
-3.19"
0.00"
September so far
September normal: 0.98"
-0.98"
0
2026 heavy rain days
Days with ≥ 1.0"

2026 Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Lander is 3.19" behind the normal pace

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1891–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1891, annual totals have trended -0.03" per decade, about -0.3" across the record.

Heavy Rain Days Per Year (≥ 1.0")

Compare year-to-year changes in days with heavy rainfall (≥ 1.0")

Month in Review — August 2026

72.6°F

Average temperature · August 2026

43rd-warmest month on record

13th-warmest August of 135 on record

+2.3° vs. 70.3° average (1991–2020)
76.5°F
Warmest month ever
July 2026
74.0°F
Warmest August ever
1983
13
Days ≥ 90°F
in August
102°F
Hottest of 2026
Jul 12

Longest 90°F Streak in August

6 consecutive days with highs of at least 90°F (Aug 6–11, 2026, peaking at 98°F)

Ties the longest August streak since 2024 (2 years). The August record is 12 days, set in 2020.

Average August Temperature by Year

1891–2026 · 2026 highlighted · trend +0.45° per decade (warming since 1891)

Precipitation — August 2026

Month total against the 1991–2020 average and every other August on record

0.59"
Total precipitation
August 2026
+0.07"
vs. average
Normal: 0.52" · 113% of normal
42nd-wettest
August rank
of 135 on record
4.35"
Wettest August ever
1930 · driest 0.00" (1944)

August Precipitation by Year

1891–2026 · 2026 highlighted

Wettest Augusts on Record

# Year Total
1 1930 4.35"
2 2004 2.38"
3 1979 2.30"
4 1941 1.99"
5 1966 1.77"
6 1933 1.67"
7 2014 1.61"
8 2023 1.58"
9 1908 1.52"
10 1987 1.50"

Driest Augusts on Record

# Year Total
1 1970 0.00"
2 1969 0.00"
3 1960 0.00"
4 1944 0.00"
5 2013 0.01"
6 2012 0.03"
7 1962 0.03"
8 2020 0.05"
9 1902 0.06"
10 2002 0.07"

Warmest Augusts on Record

# Year Avg Temp
1 1983 74.0°F
2 2003 73.5°F
3 2020 73.3°F
4 1982 73.3°F
5 2013 73.2°F
6 1969 73.1°F
7 2000 72.9°F
8 2001 72.9°F
9 2012 72.9°F
10 1970 72.8°F

Warmest Months on Record (Any Month)

# Month Avg Temp
1 July 2026 76.5°F
2 July 2003 75.9°F
3 July 2006 75.9°F
4 July 2007 75.6°F
5 July 2012 75.5°F
6 July 1988 75.3°F
7 July 2002 74.9°F
8 July 2022 74.9°F
9 July 2021 74.8°F
10 July 1954 74.7°F

Nearby Stations — August 2026

How the same month ranked at the closest reporting stations

Station Avg Temp August Rank
Lander, WY 72.6°F 13th of 135
Casper, WY 71.5°F 16th of 87
Sheridan, WY 69.5°F 50th of 120
Pocatello, ID 72.5°F 5th of 88
Billings, MT 73.0°F 26th of 92
About this data. Monthly averages are the mean of daily average temperatures, computed from NOAA Threadex records via RCC ACIS. Months missing more than three days of observations are excluded from the rankings, so the in-progress month never appears. Rankings cover 1,616 complete months on record. Precipitation totals sum the daily reports for the month, with trace amounts counted as zero. A month missing any day of precipitation data is left out entirely (an unreported day is unreported rain), so the precipitation ranking covers 135 complete Augusts. Normals are the 1991–2020 mean for the same calendar month. Trend lines are a least-squares fit across every year shown.

Fall in Review — Fall 2026

September 1 – November 30, 2026

Fall 2026 is still under way. Season totals and rankings appear once November closes; the markers below update as they happen.

Summer to Winter — 2026

Each turning point of the season against its 1991–2020 normal date, with the earliest and latest on record

Marker 2026 Normal vs. normal Earliest Latest Drift
Last 90°F day
The final day of summer heat
 Aug 27
so far
 Sep 1 Jul 12, 1896 Sep 29, 2024 +1.6 d/decade
Last 80°F day
The last genuinely warm afternoon
 Sep 6
so far
 Sep 27 Jul 31, 2017 Oct 21, 2003 +0.5 d/decade
First high below 50°F
The first afternoon that stays cold
 not yet Sep 30 Sep 5, 1929 Nov 3, 1940 +0.2 d/decade
First 32°F freeze
Growing season over
 not yet Sep 29 Jul 3, 1921 Oct 25, 2010 +1.5 d/decade
First 28°F hard freeze
Cold enough to end tender growth
 not yet Oct 6 Aug 25, 1910 Oct 28, 2015 +1.4 d/decade
First 20°F night
Winter cold arriving
 not yet Oct 24 Sep 17, 1965 Nov 17, 2016 +0.6 d/decade
First measurable snow
0.1" or more in a day
 not yet Oct 7 Sep 7, 1941 Dec 7, 1914 -0.2 d/decade

Drift is a least-squares fit across every year on record. Positive means the marker has been arriving later.

First Freeze by Year

The first 32°F night of each autumn since 1891 · trending +1.5 days later per decade

134
Normal length
1991–2020 average
170
Longest on record
1987
55
Shortest on record
1921

Growing Season Length by Year

Days between the last spring freeze and the first fall freeze · trending +2.6 days longer per decade

Fall Average Temperature by Year

1891–2025 · 2026 highlighted · trend +0.27° per decade (warming since 1891)

Fall Precipitation by Year

1891–2025 · 2026 highlighted · trend -0.01" per decade (drier since 1891)

About this data. Fall is meteorological autumn, September 1 through November 30, the window NOAA uses for seasonal statistics. Seasonal temperature is the day-weighted mean of the three monthly means; precipitation is their sum, and a season missing any of the three months is left out of the rankings. Freeze, heat and snow markers come from daily NOAA Threadex observations via RCC ACIS: freezes and snow are the first occurrence on or after July 1, and the last 90°F and 80°F days are the final ones anywhere in the calendar year. Growing season counts the freeze-free days between the last spring 32°F and the first fall 32°F.
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