Climateby Month

Greeley, CO climate by month

NOAA 1991-2020 normals · 4,674 ft elevation

Greeley has hot summers and chilly and snowy winters. Highs peak at 92°F in July and fall to 43°F in December. The wettest month is May (about 11 wet days) and the driest is December (about 4). Normal snowfall is about 35 in a year. By our comfort score the best months are April and May.

Warmest month
92°F
July normal high
Coldest month
18°F
January normal low
Wet days a year
73
14.7 in of precipitation
Snow a year
34.9 in
normal snowfall

How warm is Greeley?

Normal highs range from 43°F in December to 92°F in July.

0°20°40°60°80°100° January: normal high 44°F (7°C), low 18°F (-8°C) February: normal high 48°F (9°C), low 20°F (-7°C) March: normal high 59°F (15°C), low 28°F (-2°C) April: normal high 66°F (19°C), low 35°F (2°C) May: normal high 75°F (24°C), low 45°F (7°C) June: normal high 86°F (30°C), low 54°F (12°C) July: normal high 92°F (33°C), low 59°F (15°C) 92° 59° August: normal high 89°F (32°C), low 57°F (14°C) September: normal high 82°F (28°C), low 49°F (9°C) October: normal high 68°F (20°C), low 37°F (3°C) November: normal high 54°F (12°C), low 26°F (-3°C) December: normal high 43°F (6°C), low 18°F (-8°C) 43° 18° JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Greeley?

May has the most wet days (about 11); the year brings about 15 in of precipitation.

January: 4 wet days February: 4 wet days March: 5 wet days April: 8 wet days May: 11 wet days 11 June: 8 wet days July: 7 wet days August: 7 wet days September: 6 wet days October: 6 wet days November: 4 wet days December: 4 wet days 4 JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How much does it snow?

Normal snowfall is 34.9 in a year, most of it in January.

January: 5.7 in of snow 5.7 February: 5.1 in of snow March: 5.1 in of snow April: 3.7 in of snow May: 0.5 in of snow June: 0.0 in of snow 0.0 July: 0.0 in of snow August: 0.0 in of snow September: 0.5 in of snow October: 3.3 in of snow November: 5.4 in of snow December: 5.6 in of snow JFMAMJJASOND

How humid is Greeley?

Muggy days (dew point 65°F or higher) are rare in any month.

January: 0 muggy days 0 February: 0 muggy days March: 0 muggy days April: 0 muggy days May: 0 muggy days June: 0 muggy days July: 0 muggy days August: 0 muggy days September: 0 muggy days October: 0 muggy days November: 0 muggy days December: 0 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at Denver International Airport, 40 mi S of the city center (the nearest airport with complete hourly records).

How much daylight?

Daylight ranges from about 9.3 hours in December to 15.0 hours in June.

January: 9.7 hours of daylight February: 10.7 hours of daylight March: 12.0 hours of daylight April: 13.3 hours of daylight May: 14.4 hours of daylight June: 15.0 hours of daylight 15.0 July: 14.7 hours of daylight August: 13.7 hours of daylight September: 12.4 hours of daylight October: 11.1 hours of daylight November: 9.9 hours of daylight December: 9.3 hours of daylight 9.3 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Greeley, 1991-2020
MonthHighLowPrecip.Wet daysSnowMuggy daysDaylight
January 44°F18°F 0.5 in4 5.7 in 0 9.7 h
February 48°F20°F 0.5 in4 5.1 in 0 10.7 h
March 59°F28°F 0.9 in5 5.1 in 0 12.0 h
April 66°F35°F 1.8 in8 3.7 in 0 13.3 h
May 75°F45°F 2.6 in11 0.5 in 0 14.4 h
June 86°F54°F 1.8 in8 0.0 in 0 15.0 h
July 92°F59°F 1.6 in7 0.0 in 0 14.7 h
August 89°F57°F 1.6 in7 0.0 in 0 13.7 h
September 82°F49°F 1.1 in6 0.5 in 0 12.4 h
October 68°F37°F 1.1 in6 3.3 in 0 11.1 h
November 54°F26°F 0.7 in4 5.4 in 0 9.9 h
December 43°F18°F 0.6 in4 5.6 in 0 9.3 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Greeley

By our comfort score, the best months are April and May.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 391212
Feb 46328
Mar 641223
Apr 721641
May 721562
Jun 587412
Jul 462420
Aug 473317
Sep 58937
Oct 671531
Nov 52826
Dec 371212

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in Greeley

The last spring frost typically comes around May 2, and the first fall frost around Oct 8, leaving 159 frost-free days in a typical year.

Frost and freeze dates for Greeley
Typical date1 year in 10
Last spring frost (32°F)May 2after May 14
First fall frost (32°F)Oct 8before Sep 26
Last hard freeze (28°F)Apr 20after May 5
First hard freeze (28°F)Oct 18before Oct 4
Frost-free season159 daysunder 139 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Greeley Unc (USC00053553), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Colorado.

Hottest and coldest readings, 1991-2020

The highest reading was 112°F (July 16, 2006); the lowest was -20°F (February 3, 1996).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Greeley

Similar climates elsewhere

Where the numbers come from

  • Temperature, rain, snowfall, snow depth and frost dates: Greeley Unc (USC00053553), 1.6 mi SSE of the city center, 4,715 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour: Denver Intl Airport (USW00003017), 41 mi S of the city center, 5,414 ft (740 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Cloud cover: Aurora Buckley Fld ANGB (USW00023036), 49 mi S of the city center, 5,663 ft (989 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Denver International Airport (725650-03017), 40 mi S of the city center, 5,404 ft (730 ft higher than the city). Hourly observations, 1991-2020.

Distances from the city center (USGS). Methodology · Report an error