Grand County climate

Grand County Weather in October

NOAA 1991-2020 normals for Williams Fork Dam, 10.3 km from Grand County

Average highs run from 64°F on October 1 to 49°F on October 31, and lows from 30°F to 20°F. Normal precipitation for the month is 1.26 in over about 8 wet days.

October day by day

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

Normal daily high and low temperature at Grand County, in °F, with the record for each date.-20020406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

October at a glance

Average high
57°F
Average low
25°F
Precipitation
1.26 in
Snowfall
4.8 in
Record high
74°FOct 1, 1992
Record low
-8°FOct 31, 2019
Chance of a freeze
100%
Daylight
11 h 45 min to 10 h 30 min
Cloud cover
55%
Humidity
60%
Dew point
22°F
Wind
5.1 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
Oct 164°F30°F74°F 199215°F 198525%3%
Oct 264°F30°F74°F 199215°F 200925%3%
Oct 364°F29°F73°F 199217°F 200924%3%
Oct 463°F29°F72°F 199219°F 197824%4%
Oct 563°F29°F72°F 199714°F 199824%4%
Oct 662°F28°F71°F 199715°F 199524%4%
Oct 762°F28°F70°F 195411°F 201224%4%
Oct 861°F28°F72°F 20209°F 199224%5%
Oct 961°F27°F71°F 196512°F 197024%5%
Oct 1060°F27°F73°F 200311°F 198224%5%
Oct 1160°F27°F70°F 200710°F 201924%5%
Oct 1259°F26°F71°F 19509°F 199024%6%
Oct 1359°F26°F69°F 200712°F 200224%6%
Oct 1458°F26°F70°F 195011°F 196923%6%
Oct 1558°F25°F68°F 195010°F 195223%7%
Oct 1657°F25°F71°F 199114°F 201823%7%
Oct 1757°F25°F69°F 20158°F 194823%8%
Oct 1856°F24°F71°F 20039°F 199624%8%
Oct 1955°F24°F71°F 20039°F 198924%8%
Oct 2055°F24°F71°F 200310°F 197624%9%
Oct 2154°F24°F67°F 20036°F 199624%9%
Oct 2254°F23°F69°F 20038°F 194924%10%
Oct 2353°F23°F69°F 19546°F 199524%10%
Oct 2453°F23°F68°F 20037°F 198024%11%
Oct 2552°F22°F65°F 20141°F 197525%11%
Oct 2652°F22°F67°F 20219°F 201225%12%
Oct 2751°F22°F65°F 19647°F 201125%12%
Oct 2851°F21°F64°F 20018°F 201025%12%
Oct 2950°F21°F68°F 19504°F 197625%13%
Oct 3050°F21°F62°F 1950-3°F 199325%13%
Oct 3149°F20°F62°F 1950-8°F 201926%14%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Grand County, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

October 1
sunrise 7:01 AM, sunset 6:46 PM
October 31
sunrise 7:33 AM, sunset 6:03 PM

Every day of October: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00059096 (Williams Fork Dam), public domain. Records: NOAA GHCN-Daily, station USC00053500, 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.