Climate Comfort Score
78/100
Good
NOAA 1991–2020 normals 58°F annual avg Public-domain federal data
Belleville Siu Rsch, IL Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 58°F
- Avg annual temp
- 78/100
- Comfort score
- 43.4"
- Annual precip
- 191d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Belleville Siu Rsch
Belleville Siu Rsch, Illinois averages 58°F a year and scores 78/100 on the comfort index - good, milder than 74% of U.S. cities.
- 58°F
- yearly average temperature, NOAA normal
- 78/100
- comfort score, milder than 74% of U.S. cities
- 43.4"
- annual precipitation · 11" snow
- 191 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
58°F (14°C)
Avg High
69°F
Avg Low
46°F
Annual Precip
43.4"
Annual Snow
11.2"
Comfort Score
78/100
Good
Avg Annual Temperature
58°F
30-year mean (NOAA NCEI)
Annual Precipitation
43.4"
Plus 11.2" of snow
Comfort score vs national 100-point ceiling (Belleville Siu Rsch) 78.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Belleville Siu Rsch area.
How Belleville Siu Rsch compares to every U.S. city
Belleville Siu Rsch's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
78 Top 26% higher than 74% 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 Belleville Siu Rsch
MethodologyThe chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Belleville Siu Rsch, 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 | 43°F (6°C) | 24°F (-4°C) | 34°F (1°C) | 2.6" | 3.4" | 23.6 | 0.0 |
| February | 49°F (9°C) | 28°F (-2°C) | 38°F (3°C) | 2.2" | 3.3" | 19.1 | 0.0 |
| March | 59°F (15°C) | 36°F (2°C) | 48°F (9°C) | 3.4" | 1.0" | 12.0 | 0.0 |
| April | 71°F (21°C) | 46°F (8°C) | 58°F (15°C) | 4.9" | 0.0" | 3.1 | 0.1 |
| May | 79°F (26°C) | 56°F (13°C) | 68°F (20°C) | 5.0" | 0.0" | 0.0 | 2.2 |
| June | 87°F (31°C) | 65°F (18°C) | 76°F (24°C) | 4.6" | 0.0" | 0.0 | 11.6 |
| July | 90°F (32°C) | 68°F (20°C) | 79°F (26°C) | 4.0" | 0.0" | 0.0 | 17.1 |
| August | 89°F (32°C) | 65°F (19°C) | 77°F (25°C) | 3.9" | 0.0" | 0.0 | 14.4 |
| September | 83°F (29°C) | 57°F (14°C) | 70°F (21°C) | 3.4" | 0.0" | 0.2 | 6.7 |
| October | 73°F (23°C) | 47°F (8°C) | 60°F (15°C) | 3.1" | 0.0" | 3.0 | 0.7 |
| November | 58°F (15°C) | 37°F (3°C) | 48°F (9°C) | 3.6" | 0.6" | 11.2 | 0.0 |
| December | 46°F (8°C) | 28°F (-2°C) | 37°F (3°C) | 2.6" | 2.9" | 21.3 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 2.6"
Snow: 3.4"
7.1 days with precipitation
February 2.2"
Snow: 3.3"
7.5 days with precipitation
March 3.4"
Snow: 1.0"
9.5 days with precipitation
April 4.9"
10.3 days with precipitation
May 5.0"
11.5 days with precipitation
June 4.6"
8.7 days with precipitation
July 4.0"
7.4 days with precipitation
August 3.9"
7.2 days with precipitation
September 3.4"
6.6 days with precipitation
October 3.1"
8.4 days with precipitation
November 3.6"
Snow: 0.6"
7.7 days with precipitation
December 2.6"
Snow: 2.9"
7.7 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 20
50% probability date
Last Spring Freeze
April 12
50% probability date
Growing Season
191 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,209
Higher = more heating needed
Cooling Degree Days
1,579
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 72% | 8.3 | 32% | 35% |
| February | 69% | 9.0 | 31% | 35% |
| March | 66% | 8.8 | 32% | 28% |
| April | 70% | 7.7 | 30% | 28% |
| May | 73% | 6.4 | 29% | 20% |
| June | 72% | 5.5 | 33% | 11% |
| July | 75% | 4.7 | 38% | 11% |
| August | 76% | 4.9 | 43% | 12% |
| September | 71% | 5.8 | 49% | 13% |
| October | 70% | 7.4 | 40% | 27% |
| November | 74% | 8.3 | 33% | 34% |
| December | 76% | 8.5 | 32% | 39% |
What Belleville Siu Rsch's climate means for you
Belleville Siu Rsch runs 58°F a year - peaking in July, coldest in January.
- Gardeners get about 191 frost-free days, with the last spring freeze near April 12 - plan the planting calendar around it, not the regional average.
- Energy bills track 4,209 heating and 1,579 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: Belleville Siu Rsch, IL
Based on station USW00013802 feeding NOAA's 1991–2020 climate normals, Belleville Siu Rsch, Illinois averages 58°F a year, ranging from a mean daily high of 69°F to a mean daily low of 46°F. July is typically the warmest month of the year, while January is the coldest. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Belleville Siu Rsch receives roughly 43.4 inches of precipitation each year, with 11.2 inches typically falling as snow. The frost-free season averages 191 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 12 and the first fall freeze near October 20. For energy use, 4,209 heating degree days and 1,579 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Belleville Siu Rsch scores 78/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. For planning purposes, look to the monthly tables above: shoulder seasons bring the mildest highs and lows, summer brings July-driven heat, and deep winter brings January-driven cold. Treat every figure here as a thirty-year average rather than a forecast - individual years routinely run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in Belleville Siu Rsch, IL? ▼
The average annual temperature in Belleville Siu Rsch, Illinois is 58°F. The warmest month averages 90°F (32°C) and the coldest averages 24°F (-4°C).
How much rain does Belleville Siu Rsch get? ▼
Belleville Siu Rsch receives 43.4 inches of precipitation annually, including 11.2 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Belleville Siu Rsch? ▼
Belleville Siu Rsch has a climate comfort score of 78/100 (Good), milder than 74% of U.S. cities in the PlainClimate database.
When is the growing season in Belleville Siu Rsch? ▼
Belleville Siu Rsch has approximately 191 frost-free days per year, with the last spring freeze around April 12 and the first fall freeze around October 20.
How much energy does heating and cooling require in Belleville Siu Rsch? ▼
Belleville Siu Rsch has 4,209 heating degree days and 1,579 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 Belleville Siu Rsch climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USW00013802 near Belleville Siu Rsch.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00013802. 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.