Summit County climate

Summit County Weather in January

NOAA 1991-2020 normals for Dillon 1 E, 7 km from Summit County

Average highs run from 30°F on January 1 to 32°F on January 31, and lows from 1°F to 2°F. Normal precipitation for the month is 0.95 in over about 12 wet days.

January day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Summit County, in °F, with the record for each date.-40-200204060151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

January at a glance

Average high
31°F
Average low
2°F
Precipitation
0.95 in
Snowfall
18.0 in
Record high
50°FJan 20, 1997
Record low
-33°FJan 12, 1963
Chance of a freeze
100%
Daylight
9 h 26 min to 10 h 10 min
Cloud cover
59%
Humidity
92%
Dew point
7°F
Wind
6.5 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.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Jan 130°F1°F43°F 1981-28°F 197936%31%
Jan 231°F1°F44°F 1981-28°F 197936%31%
Jan 331°F1°F48°F 1997-22°F 197436%31%
Jan 431°F1°F41°F 2026-26°F 197236%31%
Jan 531°F1°F42°F 1956-27°F 197137%31%
Jan 631°F1°F44°F 1954-30°F 197137%31%
Jan 731°F1°F40°F 1956-25°F 197137%31%
Jan 831°F1°F41°F 1981-18°F 196737%31%
Jan 931°F1°F48°F 2018-18°F 196237%31%
Jan 1031°F1°F42°F 2018-27°F 196237%31%
Jan 1131°F1°F43°F 1953-20°F 196237%31%
Jan 1231°F1°F46°F 1959-33°F 196337%31%
Jan 1331°F1°F46°F 1987-33°F 196337%31%
Jan 1431°F1°F47°F 1987-17°F 201337%31%
Jan 1531°F1°F46°F 1986-27°F 199237%31%
Jan 1631°F2°F45°F 1974-19°F 200838%31%
Jan 1731°F2°F47°F 1974-24°F 200838%31%
Jan 1831°F2°F44°F 1974-27°F 198438%31%
Jan 1931°F2°F38°F 1997-27°F 198438%31%
Jan 2031°F2°F50°F 1997-25°F 198838%31%
Jan 2131°F2°F48°F 2005-28°F 198838%31%
Jan 2231°F2°F45°F 1976-30°F 202538%31%
Jan 2331°F2°F46°F 2005-19°F 202538%31%
Jan 2432°F2°F45°F 1981-17°F 199138%31%
Jan 2532°F2°F44°F 2005-19°F 202638%31%
Jan 2632°F2°F42°F 1992-20°F 200438%31%
Jan 2732°F2°F46°F 2014-22°F 201738%31%
Jan 2832°F2°F50°F 2015-20°F 201739%32%
Jan 2932°F2°F42°F 1988-11°F 197039%32%
Jan 3032°F2°F46°F 1960-21°F 197239%32%
Jan 3132°F2°F44°F 1986-26°F 198539%32%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Summit County, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MST).

January 1
sunrise 7:25 AM, sunset 4:51 PM
January 31
sunrise 7:13 AM, sunset 5:23 PM

Every day of January: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00052281 (Dillon 1 E), public domain. Records: NOAA GHCN-Daily, station USC00051660, 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.