Clarks Summit Weather in December
Average highs run from 45°F on December 1 to 37°F on December 31, and lows from 30°F to 23°F. Normal precipitation for the month is 2.80 in over about 12 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 40°F
- Average low
- 26°F
- Precipitation
- 2.80 in
- Snowfall
- 7.7 in
- Record high
- 71°FDec 1, 2006
- Record low
- -9°FDec 24, 1989
- Chance of a freeze
- 100%
- Daylight
- 9 h 24 min to 9 h 14 min
- Cloud cover
- 73%
- Humidity
- 89%
- Dew point
- 25°F
- Wind
- 6.0 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 45°F | 30°F | 71°F 2006 | 8°F 1976 | 38% | 13% |
| Dec 2 | 45°F | 30°F | 62°F 1980 | 6°F 1976 | 38% | 14% |
| Dec 3 | 44°F | 30°F | 65°F 1998 | 3°F 1976 | 38% | 14% |
| Dec 4 | 44°F | 29°F | 69°F 1998 | 5°F 2002 | 39% | 15% |
| Dec 5 | 43°F | 29°F | 67°F 2001 | 6°F 2025 | 39% | 15% |
| Dec 6 | 43°F | 29°F | 66°F 1998 | 8°F 2007 | 39% | 16% |
| Dec 7 | 43°F | 29°F | 69°F 1998 | 9°F 1970 | 39% | 16% |
| Dec 8 | 42°F | 28°F | 61°F 1980 | 8°F 1976 | 39% | 16% |
| Dec 9 | 42°F | 28°F | 64°F 1966 | 3°F 2025 | 39% | 17% |
| Dec 10 | 42°F | 28°F | 65°F 1966 | 4°F 1958 | 39% | 17% |
| Dec 11 | 41°F | 28°F | 65°F 2021 | -1°F 1958 | 39% | 18% |
| Dec 12 | 41°F | 27°F | 64°F 1979 | -5°F 1988 | 39% | 18% |
| Dec 13 | 41°F | 27°F | 66°F 2015 | 2°F 1960 | 39% | 18% |
| Dec 14 | 41°F | 27°F | 66°F 2015 | -5°F 2005 | 39% | 19% |
| Dec 15 | 40°F | 27°F | 60°F 1971 | 6°F 1962 | 39% | 19% |
| Dec 16 | 40°F | 26°F | 65°F 2021 | 3°F 1951 | 39% | 20% |
| Dec 17 | 40°F | 26°F | 61°F 2000 | -4°F 1951 | 39% | 20% |
| Dec 18 | 40°F | 26°F | 53°F 2006 | 2°F 1989 | 39% | 20% |
| Dec 19 | 39°F | 26°F | 57°F 1957 | 2°F 1989 | 39% | 20% |
| Dec 20 | 39°F | 25°F | 63°F 1988 | -2°F 2004 | 39% | 21% |
| Dec 21 | 39°F | 25°F | 65°F 2018 | -1°F 1955 | 39% | 21% |
| Dec 22 | 39°F | 25°F | 66°F 2013 | -1°F 1989 | 39% | 21% |
| Dec 23 | 38°F | 25°F | 64°F 1990 | -2°F 1960 | 39% | 22% |
| Dec 24 | 38°F | 24°F | 68°F 2015 | -9°F 1989 | 39% | 22% |
| Dec 25 | 38°F | 24°F | 64°F 2020 | -7°F 1969 | 39% | 22% |
| Dec 26 | 38°F | 24°F | 60°F 1964 | -2°F 1983 | 39% | 23% |
| Dec 27 | 38°F | 24°F | 55°F 1949 | -1°F 1950 | 39% | 23% |
| Dec 28 | 37°F | 23°F | 63°F 2008 | -4°F 1960 | 39% | 23% |
| Dec 29 | 37°F | 23°F | 67°F 1984 | 1°F 1993 | 39% | 24% |
| Dec 30 | 37°F | 23°F | 58°F 2022 | -2°F 1962 | 39% | 24% |
| Dec 31 | 37°F | 23°F | 63°F 1965 | -4°F 1962 | 39% | 24% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:10 AM, sunset 4:34 PM
- December 31
- sunrise 7:29 AM, sunset 4:43 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00014777 (Wilkes-Barre Intl AP), public domain. Records: NOAA GHCN-Daily, station USW00014777, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.