North Okaw, IL climate
North Okaw has chilly winters and warm summers. A typical July afternoon reaches 86°, a January night drops to 20°, and about 15 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in North Okaw feels like
Winter
Spring
Summer
Fall
North Okaw 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 | 35° | 20° | 2.4" | 5.2" | 10 | 8 | 20° – 39° |
| February | 40° | 23° | 2.0" | 3.6" | 8 | 7 | 20° – 42° |
| March | 52° | 32° | 2.8" | 1.9" | 10 | 1 | 35° – 56° |
| April | 64° | 42° | 4.4" | 0.1" | 11 | 0 | 46° – 59° |
| May | 74° | 53° | 4.4" | 0 | 13 | 0 | 58° – 72° |
| June | 83° | 62° | 4.7" | 0 | 11 | 0 | 68° – 76° |
| July | 86° | 65° | 4.2" | 0 | 9 | 0 | 70° – 82° |
| August | 85° | 63° | 3.0" | 0 | 8 | 0 | 69° – 79° |
| September | 79° | 56° | 3.0" | 0 | 7 | 0 | 62° – 72° |
| October | 67° | 44° | 3.4" | 0 | 9 | 0 | 51° – 60° |
| November | 52° | 34° | 3.4" | 0.6" | 10 | 0 | 35° – 50° |
| December | 40° | 25° | 2.4" | 3.1" | 9 | 4 | 18° – 42° |
| Year | 63° | 43° | 40.2" | 14.5" | 114 | 20 |
“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 North Okaw
North Okaw gets 40 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 114 days a year. Snow covers the ground about 20 days of the year.
About 199 frost-free days a year
In half of years the last 32° night comes by April 11 and the first one by October 29. That leaves about 199 frost-free days for gardens, longer than 72% of U.S. towns.
Heating and cooling a home in North Okaw
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In North Okaw, 82% of that work is heating and 18% 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.
North Okaw and its neighbors
North Okaw borders 6 towns with climate data. January nights across them vary by 0.5°. Bourbon has the coldest January nights (19°) and Humboldt the hottest July afternoons (86°). North Okaw’s January low is 20° and its July high 86°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How North Okaw 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 North Okaw averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.2°). The shift is smaller than in 59% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at North Okaw’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 18° to 42°. June is the most reliable, staying within 7°.
Common questions about North Okaw’s climate
What is the coldest month in North Okaw?
January, with a typical high of 35° and a low of 20°.
What is the hottest month in North Okaw?
July, with a typical high of 86° and a low of 65°. About 23 days a year reach 90°.
How much snow does North Okaw get?
About 15 inches in a normal winter, most of it in January.
When is the first frost in North Okaw?
In half of years the first 32° night comes by October 29, and the last spring frost by April 11.
What is the rainiest month in North Okaw?
June, with 4.7 inches of rain and melted snow. The year totals 40 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for North Okaw itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Mattoon, IL (9 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.