Woodstock, IL climate
Woodstock has cold, snowy winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 14°, and about 35 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeRight about normal today. The forecast high is 68°, and a typical Oct 1 in Woodstock peaks around 67°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in Woodstock feels like
Winter
Spring
Summer
Fall
Woodstock 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 | 29° | 14° | 1.8" | 10.0" | 9 | 18 | 10° – 33° |
| February | 33° | 17° | 1.7" | 9.0" | 8 | 17 | 12° – 37° |
| March | 45° | 26° | 2.2" | 4.4" | 8 | 7 | 26° – 50° |
| April | 58° | 36° | 3.8" | 1.2" | 11 | 1 | 39° – 53° |
| May | 70° | 47° | 4.5" | 0 | 12 | 0 | 53° – 64° |
| June | 79° | 57° | 4.8" | 0 | 10 | 0 | 65° – 73° |
| July | 83° | 62° | 3.9" | 0 | 9 | 0 | 66° – 79° |
| August | 81° | 60° | 3.9" | 0 | 9 | 0 | 64° – 76° |
| September | 74° | 52° | 3.5" | 0 | 8 | 0 | 58° – 68° |
| October | 61° | 40° | 3.1" | 0.2" | 9 | 0 | 46° – 57° |
| November | 46° | 30° | 2.4" | 1.6" | 9 | 2 | 30° – 47° |
| December | 34° | 19° | 2.0" | 8.7" | 9 | 11 | 13° – 38° |
| Year | 58° | 38° | 37.7" | 35.1" | 110 | 54 |
“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 Woodstock
Woodstock gets 38 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 110 days a year. Snow covers the ground about 54 days of the year.
About 179 frost-free days a year
In half of years the last 32° night comes by April 25 and the first one by October 22. That leaves about 179 frost-free days for gardens, longer than 51% of U.S. towns.
Heating and cooling a home in Woodstock
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Woodstock, 89% of that work is heating and 11% 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.
Woodstock and its neighbors
Woodstock borders 3 towns with climate data. January nights across them vary by 0.3°. Greenwood has the coldest January nights (14°) and Bull Valley the hottest July afternoons (83°). Woodstock’s January low is 14° and its July high 83°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Woodstock 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 Woodstock averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.5°). The shift is smaller than in 66% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Woodstock’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 12° to 37°. June is the most reliable, staying within 8°.
Common questions about Woodstock’s climate
What is the coldest month in Woodstock?
January, with a typical high of 29° and a low of 14°.
What is the hottest month in Woodstock?
July, with a typical high of 83° and a low of 62°. About 22 days a year reach 90°.
How much snow does Woodstock get?
About 35 inches in a normal winter, most of it in January.
When is the first frost in Woodstock?
In half of years the first 32° night comes by October 22, and the last spring frost by April 25.
What is the rainiest month in Woodstock?
June, with 4.8 inches of rain and melted snow. The year totals 38 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Woodstock itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Crystal Lake 4nw, IL (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.