Climate Comfort Score
63/100
Good
NOAA 1991–2020 normals 52°F annual avg Public-domain federal data
Prairie City, IL Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 52°F
- Avg annual temp
- 63/100
- Comfort score
- 38.5"
- Annual precip
- 188d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Prairie City
Prairie City, Illinois averages 52°F a year and scores 63/100 on the comfort index - good, milder than 47% of U.S. cities.
- 52°F
- annual average temperature (NOAA normal)
- 63/100
- comfort score, milder than 47% of U.S. cities
- 38.5"
- annual precipitation · 21" snow
- 188 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
52°F (11°C)
Avg High
62°F
Avg Low
41°F
Annual Precip
38.5"
Annual Snow
21.3"
Comfort Score
63/100
Good
Avg Annual Temperature
52°F
30-year mean (NOAA NCEI)
Annual Precipitation
38.5"
Plus 21.3" of snow
Comfort score vs national 100-point ceiling (Prairie City) 63.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Prairie City area.
How Prairie City compares to every U.S. city
Prairie City's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
63 Top 53% higher than 47% 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 Prairie City
MethodologyThe chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Prairie City, the NOAA 1991-2020 normal captures average conditions across that spread - notably, the most recent decade runs warmer than the 30-year mean itself.
- 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 | 33°F (0°C) | 16°F (-9°C) | 24°F (-4°C) | 1.9" | 5.7" | 28.1 | 0.0 |
| February | 38°F (3°C) | 19°F (-7°C) | 29°F (-2°C) | 1.9" | 6.0" | 25.3 | 0.0 |
| March | 51°F (10°C) | 29°F (-2°C) | 40°F (4°C) | 2.7" | 2.5" | 19.7 | 0.0 |
| April | 64°F (18°C) | 40°F (4°C) | 52°F (11°C) | 3.8" | 1.0" | 6.6 | 0.1 |
| May | 74°F (23°C) | 52°F (11°C) | 63°F (17°C) | 5.0" | 0.0" | 0.4 | 1.6 |
| June | 82°F (28°C) | 62°F (16°C) | 72°F (22°C) | 4.8" | 0.0" | 0.0 | 5.7 |
| July | 86°F (30°C) | 64°F (18°C) | 75°F (24°C) | 4.1" | 0.0" | 0.0 | 9.2 |
| August | 84°F (29°C) | 63°F (17°C) | 73°F (23°C) | 3.2" | 0.0" | 0.0 | 5.7 |
| September | 78°F (26°C) | 55°F (13°C) | 66°F (19°C) | 3.8" | 0.0" | 0.0 | 3.4 |
| October | 66°F (19°C) | 43°F (6°C) | 55°F (13°C) | 3.0" | 0.0" | 4.3 | 0.4 |
| November | 50°F (10°C) | 31°F (-1°C) | 41°F (5°C) | 2.4" | 1.1" | 17.3 | 0.0 |
| December | 38°F (3°C) | 22°F (-6°C) | 30°F (-1°C) | 1.8" | 5.0" | 25.8 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.9"
Snow: 5.7"
7.2 days with precipitation
February 1.9"
Snow: 6.0"
7.9 days with precipitation
March 2.7"
Snow: 2.5"
9.3 days with precipitation
April 3.8"
Snow: 1.0"
11.2 days with precipitation
May 5.0"
11.7 days with precipitation
June 4.8"
10.0 days with precipitation
July 4.1"
9.0 days with precipitation
August 3.2"
8.1 days with precipitation
September 3.8"
7.1 days with precipitation
October 3.0"
9.1 days with precipitation
November 2.4"
Snow: 1.1"
7.7 days with precipitation
December 1.8"
Snow: 5.0"
8.1 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 22
50% probability date
Last Spring Freeze
April 17
50% probability date
Growing Season
188 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,886
Higher = more heating needed
Cooling Degree Days
1,017
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Prairie City's climate means for you
Prairie City runs 52°F a year - peaking in July, coldest in January.
- Gardeners get about 188 frost-free days, with the last spring freeze near April 17 - plan the planting calendar around it, not the regional average.
- Energy bills track 5,886 heating and 1,017 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: Prairie City, IL
Prairie City, Illinois runs an annual average of 52°F, ranging from a mean daily high of 62°F to a mean daily low of 41°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from station USC00116970, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Prairie City averages 38.5 inches of precipitation a year, with 21.3 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 188 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 17 and the first fall freeze near October 22. As for energy demand, 5,886 heating degree days and 1,017 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Prairie City scores 63/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, July-driven heat peaks in summer, and January-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.
Frequently Asked Questions
What is the average temperature in Prairie City, IL? ▼
The average annual temperature in Prairie City, Illinois is 52°F. The warmest month averages 86°F (30°C) and the coldest averages 16°F (-9°C).
How much rain does Prairie City get? ▼
Prairie City receives 38.5 inches of precipitation annually, including 21.3 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Prairie City? ▼
Prairie City has a climate comfort score of 63/100 (Good), milder than 47% of U.S. cities in the PlainClimate database.
When is the growing season in Prairie City? ▼
Prairie City has approximately 188 frost-free days per year, with the last spring freeze around April 17 and the first fall freeze around October 22.
How much energy does heating and cooling require in Prairie City? ▼
Prairie City has 5,886 heating degree days and 1,017 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 Prairie City climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00116970 near Prairie City.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00116970. 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.