Conner, MT climate
Conner has chilly winters and warm summers, with very little rain. A typical July afternoon reaches 84°, a January night drops to 18°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Conner feels like
Winter
Spring
Summer
Fall
Conner weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 34° | 18° | 1.2" | 15° – 32° |
| February | 39° | 19° | 1.0" | 19° – 36° |
| March | 49° | 26° | 1.0" | 31° – 43° |
| April | 56° | 31° | 1.1" | 39° – 50° |
| May | 66° | 38° | 1.7" | 47° – 56° |
| June | 74° | 44° | 2.0" | 56° – 66° |
| July | 84° | 49° | 0.9" | 57° – 73° |
| August | 83° | 47° | 0.8" | 59° – 69° |
| September | 73° | 39° | 1.1" | 53° – 61° |
| October | 58° | 31° | 1.2" | 38° – 51° |
| November | 42° | 24° | 1.3" | 25° – 40° |
| December | 32° | 17° | 1.5" | 18° – 30° |
| Year | 58° | 32° | 14.9" |
“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 Conner
Conner gets 15 inches of rain and melted snow a year. June is the wettest month and August the driest.
About 118 frost-free days a year
In half of years the last 32° night comes by May 24 and the first one by September 23. That leaves about 118 frost-free days for gardens, shorter than 98% of U.S. towns.
Heating and cooling a home in Conner
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Conner, 98% of that work is heating and 2% 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 Conner 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 Conner averaged 1.2° warmer than the 1900s. The biggest change is in January (+3.6°). The shift is larger than in 51% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Conner’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 19° to 36°. September is the most reliable, staying within 8°.
Common questions about Conner’s climate
What is the coldest month in Conner?
December, with a typical high of 32° and a low of 17°.
What is the hottest month in Conner?
July, with a typical high of 84° and a low of 49°. About 22 days a year reach 90°.
When is the first frost in Conner?
In half of years the first 32° night comes by September 23, and the last spring frost by May 24.
What is the rainiest month in Conner?
June, with 2.0 inches of rain and melted snow. The year totals 15 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Conner itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Darby, MT (7 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.