Climate Comfort Score
62/100
Good
2026 data Public-data reference. official source
Rockford Gtr Rockford, IL Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991-2020 normals →
30-year climate normals from 1 weather station (1991-2020).
Rockford Gtr Rockford, Illinois has an average annual temperature of 49°F and a climate comfort score of 62/100 (Good). Annual precipitation totals 37.2", including 37.1" of snow. Based on NOAA 30-year normals (1991–2020).
Avg Temperature
49°F (10°C)
Avg High
59°F
Avg Low
40°F
Annual Precip
37.2"
Annual Snow
37.1"
Comfort Score
62/100
Good
Avg Annual Temperature
49°F
30-year mean (NOAA NCEI)
Annual Precipitation
37.2"
Plus 37.1" of snow
Comfort score vs national 100-point ceiling (Rockford Gtr Rockford) 62.0%
National median (≈55)
PlainClimate composite — temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Rockford Gtr Rockford area.
Warming context for Rockford Gtr Rockford
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Rockford Gtr Rockford 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 | 29°F (-2°C) | 15°F (-10°C) | 22°F (-6°C) | 1.6" | 10.9" | 29.2 | 0.0 |
| February | 33°F (1°C) | 18°F (-8°C) | 26°F (-4°C) | 1.6" | 8.5" | 25.8 | 0.0 |
| March | 47°F (8°C) | 28°F (-2°C) | 37°F (3°C) | 2.4" | 4.9" | 21.9 | 0.0 |
| April | 60°F (15°C) | 39°F (4°C) | 49°F (10°C) | 3.8" | 0.9" | 7.4 | 0.0 |
| May | 71°F (22°C) | 50°F (10°C) | 60°F (16°C) | 4.2" | 0.0" | 0.6 | 0.7 |
| June | 81°F (27°C) | 60°F (15°C) | 70°F (21°C) | 5.2" | 0.0" | 0.0 | 3.9 |
| July | 84°F (29°C) | 64°F (18°C) | 74°F (23°C) | 3.8" | 0.0" | 0.0 | 5.4 |
| August | 82°F (28°C) | 62°F (17°C) | 72°F (22°C) | 4.2" | 0.0" | 0.0 | 3.2 |
| September | 75°F (24°C) | 54°F (12°C) | 64°F (18°C) | 3.6" | 0.0" | 0.3 | 1.5 |
| October | 62°F (17°C) | 42°F (5°C) | 52°F (11°C) | 2.6" | 0.2" | 5.3 | 0.1 |
| November | 47°F (8°C) | 31°F (-1°C) | 39°F (4°C) | 2.3" | 2.3" | 18.0 | 0.0 |
| December | 34°F (1°C) | 20°F (-7°C) | 27°F (-3°C) | 1.9" | 9.4" | 27.3 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.6"
Snow: 10.9"
10.1 days with precipitation
February 1.6"
Snow: 8.5"
8.7 days with precipitation
March 2.4"
Snow: 4.9"
10.8 days with precipitation
April 3.8"
Snow: 0.9"
11.8 days with precipitation
May 4.2"
12.9 days with precipitation
June 5.2"
11.4 days with precipitation
July 3.8"
9.1 days with precipitation
August 4.2"
9.3 days with precipitation
September 3.6"
8.4 days with precipitation
October 2.6"
Snow: 0.2"
9.6 days with precipitation
November 2.3"
Snow: 2.3"
8.8 days with precipitation
December 1.9"
Snow: 9.4"
9.8 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 17
50% probability date
Last Spring Freeze
April 24
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,497
Higher = more heating needed
Cooling Degree Days
838
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 | 75% | 9.5 | -4986% | -4975% |
| February | 71% | 10.1 | 22% | 46% |
| March | 63% | 10.9 | -2066% | -2048% |
| April | 61% | 10.2 | -4152% | -4142% |
| May | 65% | 8.4 | -3321% | -3313% |
| June | 69% | 7.4 | -4153% | -4154% |
| July | 71% | 6.7 | -2898% | -2902% |
| August | 73% | 6.9 | -2474% | -2485% |
| September | 70% | 8.2 | 31% | 28% |
| October | 70% | 9.5 | -4568% | -4559% |
| November | 75% | 9.5 | -7912% | -7904% |
| December | 77% | 9.6 | -2483% | -2461% |
Related Data
PlainEnviro
EPA environmental data — pollution, water quality, and environmental health by location
PlainCarbon
Carbon emissions data — greenhouse gas reporting and facility-level CO2 data
PlainHazard
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PlainAirData
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Climate Guides
Climate Insight: Rockford Gtr Rockford, IL
The NOAA 1991–2020 climate normals describe Rockford Gtr Rockford, Illinois as a location with an annual average temperature of 49°F, ranging from a mean daily high of 59°F to a mean daily low of 40°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USW00094822, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Rockford Gtr Rockford receives roughly 37.2 inches of precipitation each year, with 37.1 inches typically falling as snow. Growing-season length varies with elevation and microclimate, with the last spring freeze near April 24 and the first fall freeze near October 17. For energy use, 6,497 heating degree days and 838 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Rockford Gtr Rockford scores 62/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows — shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Rockford Gtr Rockford, IL? ▼
The average annual temperature in Rockford Gtr Rockford, Illinois is 49°F. The warmest month averages 84°F (29°C) and the coldest averages 15°F (-10°C).
How much rain does Rockford Gtr Rockford get? ▼
Rockford Gtr Rockford receives 37.2 inches of precipitation annually, including 37.1 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Rockford Gtr Rockford? ▼
Rockford Gtr Rockford has a climate comfort score of 62/100 (Good). This score considers temperature mildness, humidity, precipitation, and extreme weather frequency.
When is the growing season in Rockford Gtr Rockford? ▼
Growing season data is not available for Rockford Gtr Rockford.
How much energy does heating and cooling require in Rockford Gtr Rockford? ▼
Rockford Gtr Rockford has 6,497 heating degree days and 838 cooling degree days annually. Higher heating degree days indicate greater winter energy demand, while higher cooling degree days indicate greater summer cooling needs.
Where does this Rockford Gtr Rockford climate data come from? ▼
All climate data comes from NOAA U.S. Climate Normals v1.0.1, covering the 30-year period from 1991 to 2020. Data is collected from weather station USW00094822. These 30-year averages are the standard reference for typical weather conditions.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00094822. 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
