| Month | Average (°F) | Record (°F) | Average (inches) | |||
|---|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | Snow ❄️ | |
| January | 33.4 | 19.0 | 72 | -23 | 2.7 | 9.5 |
| February | 36.2 | 20.4 | 75 | -25 | 2.3 | 8.0 |
| March | 45.5 | 27.9 | 85 | -15 | 2.9 | 5.3 |
| April | 58.7 | 38.1 | 92 | 7 | 3.9 | 1.6 |
| May | 70.3 | 50.1 | 98 | 19 | 3.9 | 0.0 |
| June | 79.3 | 59.7 | 103 | 29 | 4.3 | 0.0 |
| July | 83.0 | 63.6 | 108 | 34 | 4.2 | 0.0 |
| August | 81.3 | 61.7 | 104 | 35 | 3.5 | 0.0 |
| September | 75.5 | 54.5 | 102 | 23 | 3.5 | 0.0 |
| October | 63.3 | 43.3 | 92 | 12 | 3.3 | 0.0 |
| November | 49.7 | 33.7 | 82 | -2 | 2.8 | 1.6 |
| December | 38.5 | 25.1 | 73 | -17 | 2.6 | 6.1 |
| Entire year | 59.7 | 41.6 | 108 | -25 | 40.1 | 31.7 |
|
More Norwalk Weather Records
1894–2024
|
||
|---|---|---|
| Highest daily low | 79 °F | July 7, 2012 |
| Lowest daily high | -8 °F | January 21, 1985 |
| Greatest daily range (Difference of high and low) |
58 °F | November 22, 1908 |
| Greatest difference in daily high over two conscutive days |
48 °F | Jan 19–20, 1996 |
| Most daily precipitation | 9.0 inches | July 5, 1969 |
| Most monthly precipitation | 12.7 inches | July 1977 |
| Most yearly precipitation | 54.7 inches | 2011 |
| Most yearly days with precipitation | 171 | 2011 |
| Earliest snow in season | October 12 | 1917 |
| Latest snow in season | May 10 | 1923 |
| Most daily snow | 14.0 inches | February 14, 2007 |
| Most monthly snow | 34.0 inches | January 1978 |
| Most yearly snow | 81.2 inches | 1910 |
| Most snow in a winter | 82.6 inches | 1909–1910 |
| Greatest snow accumulation | 22.0 inches | February 5, 1978 |
| Earliest freeze | September 23 | 1974 |
| Earliest day ≥ 80 °F | March 17 | 1894 |
| Earliest day ≥ 90 °F | April 11 | 1930 |
| Earliest day ≥ 100 °F | June 1 | 1934 |
| Latest freeze | June 7 | 1895 |
| Latest day ≥ 80 °F | November 2 | 2016 |
| Latest day ≥ 90 °F | October 15 | 1897 |
| Latest day ≥ 100 °F | September 16 | 1897 |
| Most days in a year < 0 °F | 22 | 2015 |
| Most days in a year < 32 °F | 178 | 1895 |
| Most days in a year ≥ 80 °F | 123 | 1939 |
| Most days in a year ≥ 90 °F | 55 | 1934 |
| Most days in a year ≥ 100 °F | 10 | 1936 |
|
Norwalk Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 18 days | Oct 31 – Nov 17, 1985 |
| Without precipitation | 34 days | Aug 21 – Sep 23, 1908 |
| With snow | 6 days | Feb 18–23, 2015 |
| High temperature at or below freezing |
38 days | Dec 28, 1976 – Feb 3, 1977 |
| High temperature ≥ 80 °F | 65 days | Jun 19 – Aug 22, 1934 |
| High temperature ≥ 90 °F | 14 days | Jun 22 – Jul 5, 1901 |
| High temperature ≥ 100 °F | 7 days | Jul 8–14, 1936 |
| Years | Station | Coordinates |
|---|---|---|
| 1894–2024 | Norwalk WWTP | location |