Summit, UT climate
Summit has chilly, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 91°, a January night drops to 18°, and about 55 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Summit feels like
Winter
Spring
Summer
Fall
Summit 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 | 30-yr range |
|---|---|---|---|---|---|---|
| January | 44° | 18° | 0.9" | 10.3" | 6 | 24° – 37° |
| February | 48° | 21° | 1.2" | 12.8" | 7 | 28° – 41° |
| March | 56° | 27° | 1.3" | 9.2" | 6 | 35° – 47° |
| April | 63° | 32° | 1.1" | 3.0" | 6 | 41° – 53° |
| May | 73° | 40° | 1.0" | 0.7" | 6 | 50° – 60° |
| June | 84° | 48° | 0.4" | 0 | 2 | 59° – 71° |
| July | 91° | 56° | 1.0" | 0 | 6 | 70° – 76° |
| August | 88° | 54° | 1.1" | 0 | 5 | 68° – 75° |
| September | 80° | 45° | 0.9" | 0 | 3 | 59° – 66° |
| October | 67° | 34° | 1.2" | 1.8" | 4 | 45° – 56° |
| November | 54° | 24° | 0.9" | 6.0" | 4 | 31° – 46° |
| December | 43° | 17° | 1.1" | 10.9" | 6 | 26° – 35° |
| Year | 66° | 35° | 12.1" | 54.7" | 60 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Summit
Summit gets 12 inches of rain and melted snow a year. March is the wettest month and June the driest. Rain or snow falls on about 60 days a year.
About 130 frost-free days a year
In half of years the last 32° night comes by May 21 and the first one by September 29. That leaves about 130 frost-free days for gardens, shorter than 95% of U.S. towns.
Heating and cooling a home in Summit
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Summit, 90% of that work is heating and 10% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Summit compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Summit averaged 1.9° warmer than the 1900s. The biggest change is in March (+3.3°). The shift is larger than in 92% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Summit’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. November swings the most: between 1991 and 2020 its average temperature ranged from 31° to 46°. July is the most reliable, staying within 6°.
Common questions about Summit’s climate
What is the coldest month in Summit?
December, with a typical high of 43° and a low of 17°.
What is the hottest month in Summit?
July, with a typical high of 91° and a low of 56°. About 44 days a year reach 90°.
How much snow does Summit get?
About 55 inches in a normal winter, most of it in February.
When is the first frost in Summit?
In half of years the first 32° night comes by September 29, and the last spring frost by May 21.
What is the rainiest month in Summit?
March, with 1.3 inches of rain and melted snow. The year totals 12 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Summit itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Cedar City 5e, UT (11 mi, snow) and Cedar City Municipal Airport, UT (11 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.