| Month | Average (°F) | Record (°F) | Average (inches) | |||
|---|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | Snow ❄️ | |
| January | 40.0 | 14.7 | 64 | -25 | 0.6 | 5.4 |
| February | 46.8 | 19.6 | 74 | -27 | 0.6 | 4.7 |
| March | 58.3 | 26.2 | 86 | -8 | 0.8 | 3.9 |
| April | 65.6 | 31.8 | 94 | 12 | 0.9 | 2.1 |
| May | 76.0 | 39.9 | 103 | 15 | 0.9 | 0.0 |
| June | 86.6 | 47.9 | 107 | 25 | 0.5 | 0.0 |
| July | 95.9 | 56.6 | 110 | 37 | 0.3 | 0.0 |
| August | 93.4 | 55.0 | 110 | 35 | 0.6 | 0.0 |
| September | 82.9 | 44.6 | 106 | 21 | 0.7 | 0.0 |
| October | 68.1 | 32.6 | 92 | -2 | 0.9 | 0.8 |
| November | 51.9 | 21.8 | 79 | -13 | 0.5 | 3.3 |
| December | 40.2 | 14.5 | 70 | -30 | 0.6 | 5.8 |
| Entire year | 67.2 | 33.6 | 110 | -30 | 8.0 | 25.5 |
|
More Delta Weather Records
1938–2024
|
||
|---|---|---|
| Highest daily low | 76 °F | July 12, 2017 |
| Lowest daily high | -1 °F | December 23, 1998 |
| Greatest daily range (Difference of high and low) |
64 °F | July 10, 2003 |
| Greatest difference in daily high over two conscutive days |
40 °F | May 19–20, 1975 |
| Most daily precipitation | 4.4 inches | August 18, 2021 |
| Most monthly precipitation | 5.9 inches | August 2021 |
| Most yearly precipitation | 13.4 inches | 1998 |
| Most yearly days with precipitation | 106 | 1983 |
| Earliest snow in season | October 5 | 1941 |
| Latest snow in season | May 21 | 1962 |
| Most daily snow | 16.0 inches | May 20, 1975 |
| Most monthly snow | 27.9 inches | January 1949 |
| Most yearly snow | 59.9 inches | 2012 |
| Most snow in a winter | 66.4 inches | 1948–1949 |
| Greatest snow accumulation | 20.0 inches | February 12, 1949 |
| Earliest freeze | September 9 | 2020 |
| Earliest day ≥ 80 °F | March 17 | 2007 |
| Earliest day ≥ 90 °F | April 23 | 2012 |
| Earliest day ≥ 100 °F | May 28 | 2003 |
| Latest freeze | June 19 | 1973 |
| Latest day ≥ 80 °F | October 30 | 2008 |
| Latest day ≥ 90 °F | October 11 | 1999 |
| Latest day ≥ 100 °F | September 27 | 1938 |
| Most days in a year < 0 °F | 41 | 1949 |
| Most days in a year < 32 °F | 204 | 2002 |
| Most days in a year ≥ 80 °F | 150 | 2020 |
| Most days in a year ≥ 90 °F | 105 | 2021 |
| Most days in a year ≥ 100 °F | 44 | 2022 |
| Most days in a year ≥ 110 °F | 1 | 2002 |
|
Delta Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 10 days | Feb 14–23, 1980 |
| Without precipitation | 103 days | Jul 29 – Nov 8, 2020 |
| With snow | 6 days | Jan 8–13, 1949 |
| High temperature at or below freezing |
22 days | Jan 12 – Feb 2, 2007 |
| High temperature ≥ 80 °F | 112 days | May 31 – Sep 19, 2018 |
| High temperature ≥ 90 °F | 62 days | Jun 14 – Aug 14, 2008 |
| High temperature ≥ 100 °F | 19 days | Jul 11–29, 2006 |
| Years | Station | Coordinates |
|---|---|---|
| 1938–2024 | Delta | location |