Riverside, CA
California · Records since 1893–2026
Records for August 11
🔥 Record High
August 11, 2000
+12° from 95° normal❄ Record Low
August 11, 1950
-23° from 65° normalAll-Time Records — Riverside
Top 10 Record Highs — August 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 107°F | August 11, 2000 |
| 2 | 106°F | August 11, 1915 |
| 3 | 105°F | August 11, 1994 |
| 4 | 105°F | August 11, 1980 |
| 5 | 104°F | August 11, 2012 |
| 6 | 104°F | August 11, 2004 |
| 7 | 104°F | August 11, 1940 |
| 8 | 104°F | August 11, 1922 |
| 9 | 103°F | August 11, 1995 |
| 10 | 102°F | August 11, 1933 |
Top 5 Record Lows — August 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 42°F | August 11, 1950 |
| 2 | 46°F | August 11, 1894 |
| 3 | 48°F | August 11, 1948 |
| 4 | 48°F | August 11, 1916 |
| 5 | 49°F | August 11, 1949 |
Heat Wave Summary — Riverside
threshold: 101°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date145 of 221 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1893–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Riverside
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 22, 1980 – Aug 1, 1980 | 11 | 109°F (Jul 29) | 103°F | 70°F |
| 2 | Aug 12, 2020 – Aug 21, 2020 | 10 | 109°F (Aug 15) | 104°F | 72°F |
| 3 | Aug 27, 1995 – Sep 5, 1995 | 10 | 108°F (Sep 2) | 104°F | 66°F |
| 4 | Aug 26, 2009 – Sep 4, 2009 | 10 | 108°F (Aug 27) | 104°F | 69°F |
| 5 | Aug 12, 1992 – Aug 21, 1992 | 10 | 107°F (Aug 17) | 105°F | 72°F |
| 6 | Sep 10, 1913 – Sep 18, 1913 | 9 | 111°F (Sep 17) | 105°F | 58°F |
| 7 | Sep 8, 1979 – Sep 16, 1979 | 9 | 111°F (Sep 9) | 105°F | 65°F |
| 8 | Aug 30, 2022 – Sep 7, 2022 | 9 | 110°F (Sep 4) | 107°F | 75°F |
| 9 | Aug 6, 2012 – Aug 14, 2012 | 9 | 106°F (Aug 6) | 104°F | 73°F |
| 10 | Aug 24, 1922 – Sep 1, 1922 | 9 | 104°F (Aug 27) | 103°F | 62°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
28th-warmest month on record
11th-warmest July of 118 on record
+1.7° vs. 79.5° average (1991–2020)Longest 90°F Streak in July
19 consecutive days with highs of at least 90°F (Jul 13–31, 2026, peaking at 104°F)
The longest July streak since 2024 (2 years). The July record is 31 days, set in 1959.
Average July Temperature by Year
1893–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 2006 | 86.0°F |
| 2 | 2018 | 84.2°F |
| 3 | 2024 | 82.1°F |
| 4 | 1984 | 81.6°F |
| 5 | 2023 | 81.6°F |
| 6 | 2017 | 81.6°F |
| 7 | 2003 | 81.5°F |
| 8 | 2016 | 81.4°F |
| 9 | 1990 | 81.3°F |
| 10 | 2021 | 81.2°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | July 2006 | 86.0°F |
| 2 | August 1998 | 84.3°F |
| 3 | July 2018 | 84.2°F |
| 4 | August 2012 | 83.8°F |
| 5 | August 1992 | 83.1°F |
| 6 | August 2022 | 83.0°F |
| 7 | August 2020 | 82.8°F |
| 8 | August 1995 | 82.5°F |
| 9 | August 1994 | 82.5°F |
| 10 | August 1967 | 82.3°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Riverside, CA | 81.2°F | 11th of 118 |
| Palm Springs, CA | 96.1°F | 8th of 91 |
| Long Beach, CA | 75.3°F | 10th of 69 |
| Los Angeles Downtown, CA | 76.6°F | 12th of 150 |
| Burbank Glendale Pasadena, CA | 78.3°F | 6th of 78 |