Mount Shasta, CA
California · Records since 1948–2026
Records for August 11
🔥 Record High
August 11, 1971
+16° from 85° normal❄ Record Low
August 11, 1995
-13° from 51° normalAll-Time Records — Mount Shasta
Top 10 Record Highs — August 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 101°F | August 11, 1971 |
| 2 | 100°F | August 11, 1981 |
| 3 | 99°F | August 11, 2025 |
| 4 | 98°F | August 11, 2021 |
| 5 | 96°F | August 11, 2014 |
| 6 | 96°F | August 11, 1992 |
| 7 | 96°F | August 11, 1977 |
| 8 | 95°F | August 11, 2012 |
| 9 | 95°F | August 11, 2004 |
| 10 | 95°F | August 11, 1970 |
Top 5 Record Lows — August 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 38°F | August 11, 1995 |
| 2 | 39°F | August 11, 1985 |
| 3 | 41°F | August 11, 1949 |
| 4 | 42°F | August 11, 2019 |
| 5 | 43°F | August 11, 2022 |
Heat Wave Summary — Mount Shasta
threshold: 93°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date164 of 221 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1948–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Mount Shasta
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jun 25, 2021 – Jul 14, 2021 | 20 | 103°F (Jun 27) | 97°F | 56°F |
| 2 | Jul 4, 2024 – Jul 13, 2024 | 10 | 104°F (Jul 6) | 101°F | 57°F |
| 3 | Jul 11, 2018 – Jul 20, 2018 | 10 | 97°F (Jul 12) | 95°F | 56°F |
| 4 | Jul 23, 2022 – Jul 31, 2022 | 9 | 106°F (Jul 29) | 100°F | 57°F |
| 5 | Jul 24, 2016 – Aug 1, 2016 | 9 | 102°F (Jul 28) | 97°F | 56°F |
| 6 | Jul 27, 2017 – Aug 4, 2017 | 9 | 101°F (Aug 2) | 97°F | 57°F |
| 7 | Aug 1, 1978 – Aug 9, 1978 | 9 | 100°F (Aug 7) | 97°F | 57°F |
| 8 | Jul 18, 2024 – Jul 25, 2024 | 8 | 100°F (Jul 20) | 97°F | 58°F |
| 9 | Jul 12, 2014 – Jul 19, 2014 | 8 | 99°F (Jul 13) | 96°F | 58°F |
| 10 | Aug 9, 2021 – Aug 16, 2021 | 8 | 99°F (Aug 14) | 95°F | 58°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
42nd-warmest month on record
32nd-warmest July of 76 on record
+0.5° vs. 69.0° average (1991–2020)Longest 90°F Streak in July
3 consecutive days with highs of at least 90°F (Jul 29–31, 2026, peaking at 94°F)
The longest July streak since 2025 (1 year). The July record is 24 days, set in 2024.
Average July Temperature by Year
1948–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 2024 | 75.4°F |
| 2 | 2021 | 74.8°F |
| 3 | 2014 | 74.0°F |
| 4 | 2018 | 72.6°F |
| 5 | 2023 | 72.6°F |
| 6 | 2017 | 72.4°F |
| 7 | 2022 | 72.3°F |
| 8 | 1960 | 72.2°F |
| 9 | 2013 | 72.0°F |
| 10 | 1973 | 71.1°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | July 2024 | 75.4°F |
| 2 | July 2021 | 74.8°F |
| 3 | July 2014 | 74.0°F |
| 4 | July 2018 | 72.6°F |
| 5 | August 2022 | 72.6°F |
| 6 | July 2023 | 72.6°F |
| 7 | August 2017 | 72.5°F |
| 8 | July 2017 | 72.4°F |
| 9 | July 2022 | 72.3°F |
| 10 | July 1960 | 72.2°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Mount Shasta, CA | 69.5°F | 32nd of 76 |
| Redding, CA | 83.4°F | 52nd of 123 |
| Klamath Falls, OR | 66.9°F | 87th of 123 |
| Medford, OR | 76.5°F | 18th of 116 |
| Alturas, CA | 68.7°F | 21st of 87 |