| Month | Average (°F) | Record (°F) | Average (inches) | |||
|---|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | Snow ❄️ | |
| January | 20.1 | 2.1 | 64 | -38 | 0.6 | 10.2 |
| February | 25.2 | 6.2 | 62 | -40 | 0.6 | 11.1 |
| March | 38.2 | 18.3 | 81 | -26 | 1.0 | 8.8 |
| April | 54.1 | 30.3 | 94 | -7 | 2.1 | 7.9 |
| May | 67.6 | 42.8 | 95 | 15 | 3.1 | 0.1 |
| June | 76.5 | 53.5 | 103 | 30 | 3.9 | 0.0 |
| July | 81.4 | 58.0 | 103 | 38 | 4.1 | 0.0 |
| August | 79.8 | 56.3 | 102 | 32 | 3.0 | 0.0 |
| September | 72.5 | 47.9 | 97 | 15 | 2.7 | 0.0 |
| October | 56.9 | 34.3 | 90 | 4 | 2.5 | 2.2 |
| November | 39.3 | 20.7 | 76 | -25 | 0.9 | 6.9 |
| December | 25.2 | 8.6 | 64 | -34 | 0.6 | 10.2 |
| Entire year | 53.3 | 31.8 | 103 | -40 | 25.1 | 57.3 |
|
More Summit Weather Records
1956–2024
|
||
|---|---|---|
| Highest daily low | 78 °F | July 16, 2012 |
| Lowest daily high | -24 °F | January 18, 1994 |
| Greatest daily range (Difference of high and low) |
57 °F | April 29, 2004 |
| Greatest difference in daily high over two conscutive days |
43 °F | Jan 16–17, 1967 |
| Most daily precipitation | 5.6 inches | June 29, 1971 |
| Most monthly precipitation | 9.4 inches | June 1971 |
| Most yearly precipitation | 36.0 inches | 2019 |
| Most yearly days with precipitation | 119 | 2010 |
| Earliest snow in season | September 24 | 1985 |
| Latest snow in season | May 18 | 2015 |
| Most daily snow | 22.0 inches | January 4, 1997 |
| Most monthly snow | 36.5 inches | April 2008 |
| Most yearly snow | 107.4 inches | 2019 |
| Most snow in a winter | 103.3 inches | 2010–2011 |
| Greatest snow accumulation | 54.0 inches | February 28, 1969 |
| Earliest freeze | September 3 | 1974 |
| Earliest day ≥ 70 °F | March 5 | 2000 |
| Earliest day ≥ 80 °F | March 18 | 2012 |
| Earliest day ≥ 90 °F | April 20 | 1980 |
| Earliest day ≥ 100 °F | June 21 | 1988 |
| Latest freeze | June 9 | 1989 |
| Latest day ≥ 70 °F | November 16 | 2001 |
| Latest day ≥ 80 °F | October 20 | 2003 |
| Latest day ≥ 90 °F | October 1 | 2023 |
| Latest day ≥ 100 °F | August 18 | 1976 |
| Most days in a year < 0 °F | 69 | 1978 |
| Most days in a year < 32 °F | 198 | 2002 |
| Most days in a year ≥ 80 °F | 94 | 2021 |
| Most days in a year ≥ 90 °F | 39 | 1976 |
| Most days in a year ≥ 100 °F | 5 | 1988 |
|
Summit Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 11 days | Oct 3–13, 1982 |
| Without precipitation | 56 days | Feb 18 – Apr 14, 1959 |
| With snow | 9 days | Dec 20–28, 2009 |
| High temperature at or below freezing |
94 days | Dec 12, 1968 – Mar 15, 1969 |
| High temperature ≥ 80 °F | 46 days | Jul 7 – Aug 21, 1983 |
| High temperature ≥ 90 °F | 11 days | Aug 17–27, 1976 |
| Years | Station | Coordinates |
|---|---|---|
| 1956–2024 | Summit 1 W | location |