Pontiac, MO climate
Pontiac has chilly winters and warm summers. A typical July afternoon reaches 90°, a January night drops to 25°, and about 8 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Pontiac feels like
Winter
Spring
Summer
Fall
Pontiac 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 | 46° | 25° | 2.9" | 1.9" | 8 | 0 | 30° – 44° |
| February | 51° | 28° | 2.9" | 2.6" | 8 | 1 | 31° – 48° |
| March | 61° | 36° | 4.3" | 2.0" | 11 | 0 | 42° – 60° |
| April | 70° | 45° | 5.1" | 0 | 10 | 0 | 51° – 63° |
| May | 78° | 54° | 5.3" | 0 | 12 | 0 | 62° – 72° |
| June | 86° | 63° | 3.6" | 0 | 9 | 0 | 69° – 79° |
| July | 90° | 67° | 3.7" | 0 | 9 | 0 | 74° – 84° |
| August | 89° | 65° | 3.4" | 0 | 9 | 0 | 70° – 83° |
| September | 82° | 57° | 3.9" | 0 | 8 | 0 | 66° – 76° |
| October | 72° | 45° | 3.7" | 0.1" | 9 | 0 | 53° – 63° |
| November | 59° | 36° | 4.3" | 0 | 9 | 0 | 41° – 55° |
| December | 49° | 28° | 3.3" | 1.2" | 9 | 0 | 26° – 45° |
| Year | 69° | 46° | 46.3" | 7.8" | 110 | 1 |
“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 Pontiac
Pontiac gets 46 inches of rain and melted snow a year. May is the wettest month and February the driest. Rain or snow falls on about 110 days a year.
About 214 frost-free days a year
In half of years the last 32° night comes by March 31 and the first one by November 1. That leaves about 214 frost-free days for gardens, longer than 80% of U.S. towns.
Heating and cooling a home in Pontiac
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Pontiac, 72% of that work is heating and 28% 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 Pontiac 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 Pontiac averaged 0.8° warmer than the 1900s. The biggest change is in February (+1.7°). The shift is smaller than in 86% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Pontiac’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 26° to 45°. June is the most reliable, staying within 10°.
Common questions about Pontiac’s climate
What is the coldest month in Pontiac?
January, with a typical high of 46° and a low of 25°.
What is the hottest month in Pontiac?
July, with a typical high of 90° and a low of 67°. About 44 days a year reach 90°.
How much snow does Pontiac get?
About 8 inches in a normal winter, most of it in February.
When is the first frost in Pontiac?
In half of years the first 32° night comes by November 1, and the last spring frost by March 31.
What is the rainiest month in Pontiac?
May, with 5.3 inches of rain and melted snow. The year totals 46 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Pontiac itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Mtn Home 1 Nnw, AR (17 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.