Great Falls, MT
Montana · Records since 1891–2026
Records for August 11
🔥 Record High
August 11, 1996
+16° from 85° normal❄ Record Low
August 11, 1893
-15° from 52° normalAll-Time Records — Great Falls
Top 10 Record Highs — August 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 101°F | August 11, 1996 |
| 2 | 99°F | August 11, 2018 |
| 3 | 98°F | August 11, 1971 |
| 4 | 98°F | August 11, 1897 |
| 5 | 97°F | August 11, 2015 |
| 6 | 97°F | August 11, 1931 |
| 7 | 96°F | August 11, 2022 |
| 8 | 96°F | August 11, 1972 |
| 9 | 96°F | August 11, 1967 |
| 10 | 95°F | August 11, 1965 |
Top 5 Record Lows — August 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 37°F | August 11, 1893 |
| 2 | 40°F | August 11, 2004 |
| 3 | 40°F | August 11, 1977 |
| 4 | 40°F | August 11, 1896 |
| 5 | 42°F | August 11, 2007 |
Heat Wave Summary — Great Falls
threshold: 93°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date141 of 222 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1892–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Great Falls
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 13, 2007 – Jul 23, 2007 | 11 | 104°F (Jul 15) | 98°F | 64°F |
| 2 | Jun 30, 1985 – Jul 10, 1985 | 11 | 101°F (Jul 5) | 98°F | 60°F |
| 3 | Jul 14, 1960 – Jul 23, 1960 | 10 | 102°F (Jul 22) | 96°F | 64°F |
| 4 | Aug 1, 1971 – Aug 9, 1971 | 9 | 101°F (Aug 5) | 98°F | 64°F |
| 5 | Jul 16, 1917 – Jul 24, 1917 | 9 | 100°F (Jul 22) | 96°F | 57°F |
| 6 | Jul 20, 1931 – Jul 27, 1931 | 8 | 103°F (Jul 21) | 100°F | 59°F |
| 7 | Jul 17, 1936 – Jul 24, 1936 | 8 | 102°F (Jul 17) | 98°F | 65°F |
| 8 | Jul 28, 2022 – Aug 4, 2022 | 8 | 101°F (Aug 1) | 96°F | 58°F |
| 9 | Jul 9, 1939 – Jul 16, 1939 | 8 | 100°F (Jul 10) | 96°F | 60°F |
| 10 | Jul 22, 2006 – Jul 29, 2006 | 8 | 100°F (Jul 28) | 97°F | 59°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
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
Monthly Precipitation — Last 24 Months
Blue = actual · dashed line = monthly normal
Annual Precipitation Per Year (1970–2026)
Blue = above average · tan = below average · gold = 2026 (partial)
Heavy Rain Days Per Year (≥ 1.0")
Compare year-to-year changes in days with heavy rainfall (≥ 1.0")
Month in Review — July 2026
Average temperature · July 2026
25th-warmest month on record
21st-warmest July of 133 on record
+3.9° vs. 68.1° average (1991–2020)Longest 90°F Streak in July
10 consecutive days with highs of at least 90°F (Jul 22–31, 2026, peaking at 101°F)
The longest July streak since 2024 (2 years). The July record is 13 days, set in 2024.
Average July Temperature by Year
1894–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 2007 | 76.8°F |
| 2 | 1936 | 76.4°F |
| 3 | 1960 | 74.5°F |
| 4 | 2021 | 73.7°F |
| 5 | 2006 | 73.5°F |
| 6 | 2017 | 73.4°F |
| 7 | 1947 | 73.1°F |
| 8 | 1917 | 73.0°F |
| 9 | 1985 | 73.0°F |
| 10 | 1967 | 73.0°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | July 2007 | 76.8°F |
| 2 | July 1936 | 76.4°F |
| 3 | August 1971 | 76.0°F |
| 4 | July 1960 | 74.5°F |
| 5 | July 2021 | 73.7°F |
| 6 | July 2006 | 73.5°F |
| 7 | July 2017 | 73.4°F |
| 8 | July 1947 | 73.1°F |
| 9 | July 1917 | 73.0°F |
| 10 | July 1985 | 73.0°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Great Falls, MT | 72.1°F | 21st of 133 |
| Helena, MT | 73.5°F | 10th of 147 |
| Havre, MT | 73.8°F | 10th of 146 |
| Missoula, MT | 71.9°F | 15th of 123 |