Galena, MO climate
Galena has chilly winters and warm summers. A typical July afternoon reaches 89°, a January night drops to 24°, and about 7 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Galena feels like
Winter
Spring
Summer
Fall
Galena 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 | 45° | 24° | 2.5" | 3.6" | 7 | 30° – 45° |
| February | 50° | 28° | 2.5" | 1.1" | 6 | 31° – 47° |
| March | 59° | 35° | 4.1" | 1.4" | 9 | 41° – 58° |
| April | 69° | 45° | 4.6" | 0 | 9 | 51° – 62° |
| May | 77° | 54° | 5.7" | 0 | 11 | 61° – 73° |
| June | 85° | 63° | 4.3" | 0 | 9 | 70° – 78° |
| July | 89° | 67° | 4.1" | 0 | 8 | 74° – 85° |
| August | 89° | 65° | 3.3" | 0 | 7 | 69° – 82° |
| September | 81° | 57° | 4.3" | 0 | 8 | 65° – 77° |
| October | 70° | 45° | 3.6" | 0 | 8 | 53° – 63° |
| November | 58° | 35° | 3.7" | 0 | 7 | 40° – 54° |
| December | 48° | 27° | 2.8" | 0.8" | 6 | 25° – 44° |
| Year | 68° | 45° | 45.6" | 6.9" | 94 |
“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 Galena
Galena gets 46 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 94 days a year.
About 187 frost-free days a year
In half of years the last 32° night comes by April 16 and the first one by October 21. That leaves about 187 frost-free days for gardens, longer than 60% of U.S. towns.
Heating and cooling a home in Galena
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Galena, 77% of that work is heating and 23% is cooling.
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 Galena 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 Galena averaged 0.7° warmer than the 1900s. The biggest change is in February (+1.7°). The shift is smaller than in 87% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Galena’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 25° to 44°. June is the most reliable, staying within 9°.
Common questions about Galena’s climate
What is the coldest month in Galena?
January, with a typical high of 45° and a low of 24°.
What is the hottest month in Galena?
July, with a typical high of 89° and a low of 67°. About 47 days a year reach 90°.
How much snow does Galena get?
About 7 inches in a normal winter, most of it in January.
When is the first frost in Galena?
In half of years the first 32° night comes by October 21, and the last spring frost by April 16.
What is the rainiest month in Galena?
May, with 5.7 inches of rain and melted snow. The year totals 46 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Galena itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Galena, MO (1 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.