| Month | Average (°F) | Record (°F) | Average (inches) | ||
|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | |
| January | 68.8 | 43.3 | 101 | 18 | 2.1 |
| February | 69.0 | 44.3 | 94 | 24 | 2.5 |
| March | 72.3 | 46.8 | 102 | 25 | 1.4 |
| April | 76.3 | 49.6 | 105 | 29 | 0.6 |
| May | 80.7 | 54.7 | 110 | 33 | 0.2 |
| June | 87.2 | 58.7 | 118 | 35 | 0.1 |
| July | 93.7 | 63.7 | 118 | 41 | 0.1 |
| August | 95.6 | 64.3 | 113 | 40 | 0.0 |
| September | 92.2 | 61.6 | 117 | 37 | 0.1 |
| October | 83.4 | 55.1 | 109 | 30 | 0.3 |
| November | 75.1 | 47.1 | 100 | 23 | 0.5 |
| December | 67.7 | 42.4 | 94 | 21 | 1.5 |
| Entire year | 80.2 | 52.7 | 118 | 18 | 9.5 |
|
More Riverside Weather Records
1893–2024
|
||
|---|---|---|
| Highest daily low | 80 °F | September 4, 2022 |
| Lowest daily high | 37 °F | December 13, 1932 |
| Greatest daily range (Difference of high and low) |
62 °F | October 6, 1915 |
| Greatest difference in daily high over two conscutive days |
33 °F | Apr 22–23, 1931 |
| Most daily precipitation | 4.4 inches | March 4, 1938 |
| Most monthly precipitation | 10.1 inches | February 1998 |
| Most yearly precipitation | 22.9 inches | 1983 |
| Most yearly days with precipitation | 66 | 2010 |
| Earliest freeze | October 23 | 1906 |
| Earliest day ≥ 90 °F | January 1 | 1918 |
| Earliest day ≥ 100 °F | January 27 | 2003 |
| Latest freeze | April 28 | 1894 |
| Latest day ≥ 90 °F | December 31 | 1917 |
| Latest day ≥ 100 °F | November 3 | 2010 |
| Most days in a year < 32 °F | 51 | 1948 |
| Most days in a year ≥ 80 °F | 224 | 2014 |
| Most days in a year ≥ 90 °F | 146 | 1917 |
| Most days in a year ≥ 100 °F | 45 | 1996 |
| Most days in a year ≥ 110 °F | 4 | 1955 |
|
Riverside Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 14 days | Jan 6–19, 1993 |
| Without precipitation | 207 days | Apr 13 – Nov 5, 2020 |
| High temperature ≥ 80 °F | 137 days | May 30 – Oct 13, 2022 |
| High temperature ≥ 90 °F | 80 days | Jul 7 – Sep 24, 1995 |
| High temperature ≥ 100 °F | 13 days | Aug 27 – Sep 8, 1955 |
| High temperature ≥ 110 °F | 4 days | Jun 14–17, 1917 |