Billings, MT

Montana · Records since 1934–2026

☀️ 63°F Feels like 60°
Currently in Billings
As of 12:00 PM MDT

Records for September 11

🔥 Record High

96°F

September 11, 1959

+19° from 77° normal

❄ Record Low

28°F

September 11, 1989

-22° from 50° normal
🌞 Normal high: 77°F 🌑 Normal low: 50°F 1991–2020 normals

All-Time Records — Billings

🔥
111°F
Hottest Day Ever
Jul 12, 2026
❄
-38°F
Coldest Day Ever
Feb 15, 1936
🌧
3.12"
Wettest Day Ever
May 24, 2011
☃
23.7"
Most Snow in One Day
Apr 4, 1955

First & Last Dates — Billings

How early and how late each seasonal turning point has ever arrived, across the full period of record

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Range ever recorded Normal date (1991–2020)
192 days
Longest growing season
1940
107 days
Shortest growing season
1943
154 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 96°F September 11, 1959
2 94°F September 11, 1971
3 92°F September 11, 1954
4 92°F September 11, 1948
5 91°F September 11, 1990
6 90°F September 11, 1968
7 90°F September 11, 1958
8 90°F September 11, 1939
9 89°F September 11, 2017
10 89°F September 11, 2004

Top 5 Record Lows — September 11

# Temp Date
🥶 28°F September 11, 1989
2 32°F September 11, 1970
3 32°F September 11, 1949
4 33°F September 11, 1964
5 34°F September 11, 2014
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 1934–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Billings

threshold: 95°F (90th percentile of historical Jun–Aug highs)
4.1
Avg heat wave length
days (historical)
101°
Avg peak temp
during heat waves
6
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1934–2026
39
2026 so far
31
Avg/year 1970–2025
36
Avg/year (last 10 complete)
64
Most in a year (1936)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Billings

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 15, 1936 – Jul 25, 1936 11 104°F (Jul 18) 100°F 68°F
2 Jun 16, 1988 – Jun 26, 1988 11 104°F (Jun 23) 99°F 64°F
3 Jul 14, 1960 – Jul 23, 1960 10 105°F (Jul 19) 99°F 67°F
4 Jul 1, 1985 – Jul 10, 1985 10 102°F (Jul 5) 98°F 63°F
5 Jul 15, 1955 – Jul 21, 1955 7 104°F (Jul 18) 98°F 64°F
6 Aug 10, 2003 – Aug 16, 2003 7 103°F (Aug 13) 99°F 68°F
7 Jul 1, 1936 – Jul 7, 1936 7 102°F (Jul 4) 100°F 66°F
8 Jul 26, 2000 – Aug 1, 2000 7 102°F (Jul 30) 98°F 65°F
9 Aug 3, 1971 – Aug 9, 1971 7 100°F (Aug 6) 97°F 66°F
10 Jul 11, 2002 – Jul 16, 2002 6 108°F (Jul 14) 102°F 66°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

60
2026 total
above-normal nights
40.4
Avg / summer
1970–2020
68
Most in a summer
1961

Above-Normal Summer Nights Per Year

Average June–August Low by Decade

Overnight lows · complete decades only

Precipitation

Annual totals and trend across the full period of record · see this year's standing →

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1934–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1934, annual totals have trended +0.18" per decade, about +1.6" across the record.

Heavy Rain Days Per Year (≥ 1.0")

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

This Year — 2026

How Billings is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

165 of 253 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

9.14"
2026 YTD
Normal: 10.82"
-1.68"
1.37"
September so far
September normal: 1.36"
+0.01"
2
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Billings is 1.68" behind the normal pace

Period Review — Aug 11 – Sep 10, 2026

Any window, evaluated against every other year on record — 31 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
71.2°F
Average temperature
20th-warmest of 92
+2.0°
vs. average
Normal: 69.2°F (1991–2020)
2.24"
Precipitation
9th-wettest of 92
+1.31"
vs. average
Normal: 0.93" · 241% of normal

Average Temperature by Year — Aug 11 – Sep 10

1935–2026 · 2026 highlighted · trend +0.28° per decade (warming since 1935)

Precipitation by Year — Aug 11 – Sep 10

1935–2026 · 2026 highlighted · trend -0.02" per decade (drier since 1935)

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 2013 75.8°F
2 2022 74.8°F
3 1982 74.4°F
4 2003 74.1°F
5 1998 73.7°F
6 1983 73.4°F
7 1991 73.2°F
8 1937 72.5°F
9 2017 72.4°F
10 1981 72.2°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1964 61.6°F
2 1974 62.2°F
3 1985 62.8°F
4 1951 63.0°F
5 1992 63.1°F
6 1965 63.3°F
7 1987 63.4°F
8 1993 63.4°F
9 1962 63.9°F
10 1989 64.3°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 1965 3.21"
2 1941 2.96"
3 2008 2.78"
4 1999 2.66"
5 1973 2.49"
6 2010 2.38"
7 1968 2.34"
8 1987 2.34"
9 2026 2.24"
10 1974 2.20"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 2017 0.02"
2 2003 0.03"
3 1939 0.05"
4 1984 0.06"
5 1955 0.06"
6 1996 0.07"
7 2024 0.10"
8 1994 0.12"
9 1988 0.13"
10 1981 0.14"
About this data. Pick any start and end date and this becomes the same kind of review as the Month and Fall tabs, just for exactly the window you asked for — the generalized version of the same engine, evaluated across every year on record. Average temperature is the mean of each day's (high + low) / 2; precipitation is the sum of daily totals. A year missing more than about a fifth of the window's days is excluded from the temperature ranking; any missing day excludes a year from the precipitation ranking, since an unreported day is unreported rain. Ranges that cross from December into January aren't supported yet. Normals are the 1991–2020 mean for the same window.
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