Cornwall Weather in January
Average highs run from 37°F on January 1 to 36°F on January 31, and lows from 23°F to 20°F. Normal precipitation for the month is 3.82 in over about 10 wet days.
January day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 36°F
- Average low
- 21°F
- Precipitation
- 3.82 in
- Snowfall
- 11.1 in
- Record high
- 69°FJan 9, 1998
- Record low
- -27°FJan 21, 1994
- Chance of a freeze
- 100%
- Daylight
- 9 h 15 min to 10 h 02 min
- Cloud cover
- 65%
- Humidity
- 89%
- Dew point
- 22°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 |
|---|---|---|---|---|---|---|
| Jan 1 | 37°F | 23°F | 54°F 2011 | -7°F 1988 | 32% | 10% |
| Jan 2 | 37°F | 23°F | 57°F 1979 | -11°F 2001 | 32% | 11% |
| Jan 3 | 37°F | 23°F | 55°F 1979 | -10°F 2001 | 32% | 11% |
| Jan 4 | 36°F | 22°F | 59°F 2000 | -15°F 1981 | 32% | 11% |
| Jan 5 | 36°F | 22°F | 64°F 2000 | -10°F 1981 | 32% | 11% |
| Jan 6 | 36°F | 22°F | 61°F 2007 | -18°F 1996 | 32% | 11% |
| Jan 7 | 36°F | 22°F | 68°F 2007 | -16°F 1996 | 32% | 11% |
| Jan 8 | 36°F | 22°F | 61°F 2008 | 0°F 1986 | 32% | 11% |
| Jan 9 | 36°F | 21°F | 69°F 1998 | -12°F 1996 | 32% | 12% |
| Jan 10 | 36°F | 21°F | 61°F 2008 | -6°F 2004 | 32% | 12% |
| Jan 11 | 36°F | 21°F | 51°F 1975 | -17°F 1988 | 32% | 12% |
| Jan 12 | 36°F | 21°F | 63°F 1975 | -16°F 1981 | 32% | 12% |
| Jan 13 | 36°F | 21°F | 52°F 1975 | -25°F 1981 | 32% | 12% |
| Jan 14 | 36°F | 21°F | 63°F 2005 | -23°F 1981 | 32% | 12% |
| Jan 15 | 35°F | 20°F | 60°F 1992 | -16°F 1988 | 32% | 12% |
| Jan 16 | 35°F | 20°F | 64°F 1995 | -14°F 2009 | 31% | 12% |
| Jan 17 | 35°F | 20°F | 58°F 1995 | -7°F 1982 | 31% | 12% |
| Jan 18 | 35°F | 20°F | 59°F 2006 | -14°F 1982 | 31% | 12% |
| Jan 19 | 35°F | 20°F | 62°F 1990 | -17°F 1994 | 31% | 12% |
| Jan 20 | 35°F | 20°F | 57°F 1996 | -15°F 1994 | 31% | 12% |
| Jan 21 | 35°F | 20°F | 55°F 2006 | -27°F 1994 | 31% | 11% |
| Jan 22 | 36°F | 20°F | 60°F 2006 | -26°F 1994 | 31% | 11% |
| Jan 23 | 36°F | 20°F | 54°F 1986 | -9°F 1991 | 30% | 11% |
| Jan 24 | 36°F | 20°F | 64°F 1999 | -17°F 2005 | 30% | 11% |
| Jan 25 | 36°F | 20°F | 58°F 1999 | -17°F 2005 | 30% | 11% |
| Jan 26 | 36°F | 20°F | 60°F 1978 | -3°F 1982 | 30% | 11% |
| Jan 27 | 36°F | 20°F | 54°F 1978 | -25°F 1994 | 29% | 11% |
| Jan 28 | 36°F | 20°F | 62°F 1974 | -24°F 1994 | 29% | 11% |
| Jan 29 | 36°F | 20°F | 57°F 2002 | -18°F 2005 | 29% | 10% |
| Jan 30 | 36°F | 20°F | 62°F 2002 | -12°F 2005 | 29% | 10% |
| Jan 31 | 36°F | 20°F | 56°F 2006 | -3°F 1994 | 29% | 10% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:22 AM, sunset 4:37 PM
- January 31
- sunrise 7:09 AM, sunset 5:11 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00309292 (West Point), public domain. Records: NOAA GHCN-Daily, station USC00308906, 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.