Kelly has cold, snowy winters and pleasant summers, with very little rain
A typical July afternoon reaches 79°, a January night drops to 5°, and about 166 inches of snow falls in a normal winter.
A year in Kelly at a glance
Each month’s typical high and low, and what it brings.
What stands out about Kelly’s climate
Read from where Kelly sits among Wyoming’s towns. The page puts what stands out first.
166 inches of snow, 23 of rain and melt
December is the wettest month and July the driest. Rain or snow falls on about 137 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
About 63 frost-free days a year
In half of years the last 32° night comes by June 24 and the first by August 28.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
What a year in Kelly feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Warmer than it used to be
The last 30 years in Kelly averaged 0.9° warmer than the 1900s. The biggest change is in March (+3.0°).
A smaller shift than in 76% of U.S. towns.
Change by month
Living with Kelly’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
63 frost-free days. The last frost comes by Jun 24 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Aug 28.
About 166" a winter over 48 days with an inch or more, most in December. Snow covers the ground about 154 days a year.
Months averaging under 55° run from September through June. Heating is 100% of the year’s heating-and-cooling load.
About 1 days a year reach 90°, and July afternoons average 79°.
The nicest months are July and August. 1.0 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →How Kelly compares
Against every U.S. town on TownTapestry, each counted once, with its place in Wyoming.
Kelly weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 27° | 5° | 2.5" | 40.5" | 16 | 31 | 9° – 23° |
| February | 32° | 7° | 2.2" | 28.4" | 15 | 29 | 13° – 26° |
| March | 40° | 15° | 1.9" | 19.5" | 12 | 30 | 22° – 34° |
| April | 49° | 23° | 1.9" | 9.8" | 10 | 15 | 29° – 40° |
| May | 60° | 32° | 2.1" | 0.9" | 12 | 1 | 39° – 50° |
| June | 69° | 38° | 1.7" | 0 | 11 | 0 | 48° – 59° |
| July | 79° | 43° | 1.1" | 0 | 9 | 0 | 52° – 67° |
| August | 78° | 41° | 1.2" | 0 | 9 | 0 | 55° – 63° |
| September | 68° | 34° | 1.6" | 0.3" | 8 | 0 | 48° – 55° |
| October | 53° | 25° | 1.8" | 4.2" | 9 | 2 | 31° – 45° |
| November | 37° | 15° | 2.2" | 18.2" | 10 | 16 | 18° – 33° |
| December | 27° | 6° | 2.8" | 44.1" | 16 | 30 | 11° – 21° |
| Year | 51° | 24° | 22.9" | 165.9" | 137 | 154 |
Heating and cooling a home in Kelly
100% of the work is heating, so the furnace matters far more than the air conditioner.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. July swings the most: from 1991 to 2020 its average ranged from 52° to 67°. September is the most reliable, staying within 7°.
Common questions about Kelly’s climate
What is the coldest month in Kelly?
January, with a typical high of 27° and a low of 5°.
What is the hottest month in Kelly?
July, with a typical high of 79° and a low of 43°. About 1 days a year reach 90°.
How much snow does Kelly get?
About 166 inches in a normal winter, most of it in December.
When is the first frost in Kelly?
In half of years the first 32° night comes by August 28, and the last spring frost by June 24.
What is the rainiest month in Kelly?
December, with 2.8 inches of rain and melted snow. The year totals 23 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Kelly.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Kelly itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Moose, WY (5 mi, snow) and Moose 1 Nne, WY (5 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.