Climate Comfort Score
68/100
Good
NOAA 1991–2020 normals 53°F annual avg Public-domain federal data
Windsor, IL Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
- 53°F
- Avg annual temp
- 68/100
- Comfort score
- 41.2"
- Annual precip
- 189d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Windsor
Windsor, Illinois averages 53°F a year and scores 68/100 on the comfort index - good, milder than 58% of U.S. cities.
- 53°F
- annual average temperature (NOAA normal)
- 68/100
- comfort score, milder than 58% of U.S. cities
- 41.2"
- annual precipitation · 14" snow
- 189 days
- growing season, frost-free days
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
53°F (11°C)
Avg High
62°F
Avg Low
43°F
Annual Precip
41.2"
Annual Snow
13.7"
Comfort Score
68/100
Good
Avg Annual Temperature
53°F
30-year mean (NOAA NCEI)
Annual Precipitation
41.2"
Plus 13.7" of snow
Comfort score vs national 100-point ceiling (Windsor) 68.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Windsor area.
How Windsor compares to every U.S. city
Windsor's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
68 Top 42% higher than 58% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Windsor
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Windsor captures average conditions across the spread shown, the most recent decade is warmer than the 30-year mean.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 35°F (1°C) | 19°F (-7°C) | 27°F (-3°C) | 2.6" | 5.2" | 26.5 | 0.0 |
| February | 40°F (4°C) | 23°F (-5°C) | 31°F (0°C) | 2.0" | 3.4" | 22.0 | 0.0 |
| March | 51°F (11°C) | 32°F (0°C) | 41°F (5°C) | 3.1" | 1.4" | 16.1 | 0.0 |
| April | 64°F (18°C) | 42°F (5°C) | 53°F (12°C) | 4.5" | 0.3" | 4.4 | 0.0 |
| May | 74°F (23°C) | 53°F (12°C) | 63°F (17°C) | 4.6" | 0.0" | 0.0 | 1.0 |
| June | 82°F (28°C) | 62°F (16°C) | 72°F (22°C) | 4.8" | 0.0" | 0.0 | 5.7 |
| July | 85°F (29°C) | 65°F (18°C) | 75°F (24°C) | 3.9" | 0.0" | 0.0 | 9.0 |
| August | 84°F (29°C) | 63°F (17°C) | 73°F (23°C) | 3.0" | 0.0" | 0.0 | 6.2 |
| September | 78°F (26°C) | 55°F (13°C) | 67°F (19°C) | 3.0" | 0.0" | 0.0 | 3.5 |
| October | 66°F (19°C) | 44°F (7°C) | 55°F (13°C) | 3.6" | 0.0" | 2.2 | 0.2 |
| November | 51°F (11°C) | 33°F (1°C) | 42°F (6°C) | 3.8" | 0.8" | 14.1 | 0.0 |
| December | 39°F (4°C) | 25°F (-4°C) | 32°F (0°C) | 2.5" | 2.6" | 23.6 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 2.6"
Snow: 5.2"
8.6 days with precipitation
February 2.0"
Snow: 3.4"
7.2 days with precipitation
March 3.1"
Snow: 1.4"
9.4 days with precipitation
April 4.5"
Snow: 0.3"
10.7 days with precipitation
May 4.6"
12.8 days with precipitation
June 4.8"
10.1 days with precipitation
July 3.9"
8.4 days with precipitation
August 3.0"
7.7 days with precipitation
September 3.0"
7.0 days with precipitation
October 3.6"
7.8 days with precipitation
November 3.8"
Snow: 0.8"
9.3 days with precipitation
December 2.5"
Snow: 2.6"
8.0 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 22
50% probability date
Last Spring Freeze
April 16
50% probability date
Growing Season
189 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,492
Higher = more heating needed
Cooling Degree Days
1,024
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Windsor's climate means for you
Windsor runs 53°F a year - peaking in July, coldest in January.
- Gardeners get about 189 frost-free days, with the last spring freeze near April 16 - plan the planting calendar around it, not the regional average.
- Energy bills track 5,492 heating and 1,024 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Windsor, IL
In Windsor, Illinois, the NOAA 1991–2020 climate normals put the annual average temperature at 53°F, ranging from a mean daily high of 62°F to a mean daily low of 43°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USC00119354, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Windsor receives roughly 41.2 inches of precipitation each year, with 13.7 inches typically falling as snow. The frost-free season averages 189 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 16 and the first fall freeze near October 22. For energy use, 5,492 heating degree days and 1,024 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Windsor scores 68/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Shoulder seasons bring the mildest highs and lows in the monthly tables above, summer brings July-driven heat, and winter brings January-driven cold - use that rhythm for planning. These figures are thirty-year averages rather than forecasts, so a specific year may still run warmer, cooler, wetter, or drier than what's shown.
Frequently Asked Questions
What is the average temperature in Windsor, IL? ▼
The average annual temperature in Windsor, Illinois is 53°F. The warmest month averages 85°F (29°C) and the coldest averages 19°F (-7°C).
How much rain does Windsor get? ▼
Windsor receives 41.2 inches of precipitation annually, including 13.7 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Windsor? ▼
Windsor has a climate comfort score of 68/100 (Good), milder than 58% of U.S. cities in the PlainClimate database.
When is the growing season in Windsor? ▼
Windsor has approximately 189 frost-free days per year, with the last spring freeze around April 16 and the first fall freeze around October 22.
How much energy does heating and cooling require in Windsor? ▼
Windsor has 5,492 heating degree days and 1,024 cooling degree days annually, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Windsor climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00119354 near Windsor.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00119354. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.