Climate Comfort Score
63/100
Good
NOAA 1991–2020 normals 50°F annual avg Public-domain federal data
Galesburg, IL Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
- 50°F
- Avg annual temp
- 63/100
- Comfort score
- 39.0"
- Annual precip
- 182d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Galesburg
Galesburg, Illinois averages 50°F a year and scores 63/100 on the comfort index - good, milder than 47% of U.S. cities.
- 50°F
- yearly average temperature, NOAA normal
- 63/100
- comfort score, milder than 47% of U.S. cities
- 39.0"
- annual precipitation · 26" snow
- 182 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
50°F (10°C)
Avg High
60°F
Avg Low
41°F
Annual Precip
39.0"
Annual Snow
25.9"
Comfort Score
63/100
Good
Avg Annual Temperature
50°F
30-year mean (NOAA NCEI)
Annual Precipitation
39.0"
Plus 25.9" of snow
Comfort score vs national 100-point ceiling (Galesburg) 63.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Galesburg area.
How Galesburg compares to every U.S. city
Galesburg'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 Galesburg
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Galesburg 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 | 30°F (-1°C) | 14°F (-10°C) | 22°F (-6°C) | 1.7" | 9.0" | 28.8 | 0.0 |
| February | 35°F (2°C) | 17°F (-8°C) | 26°F (-3°C) | 1.9" | 6.6" | 25.0 | 0.0 |
| March | 48°F (9°C) | 28°F (-2°C) | 38°F (3°C) | 2.4" | 2.3" | 20.5 | 0.0 |
| April | 61°F (16°C) | 40°F (4°C) | 51°F (10°C) | 3.8" | 0.4" | 6.1 | 0.0 |
| May | 72°F (22°C) | 52°F (11°C) | 62°F (17°C) | 5.3" | 0.0" | 0.2 | 0.6 |
| June | 81°F (27°C) | 62°F (17°C) | 72°F (22°C) | 4.6" | 0.0" | 0.0 | 3.7 |
| July | 84°F (29°C) | 65°F (19°C) | 75°F (24°C) | 4.0" | 0.0" | 0.0 | 6.3 |
| August | 82°F (28°C) | 63°F (17°C) | 73°F (23°C) | 3.9" | 0.0" | 0.0 | 3.7 |
| September | 76°F (25°C) | 55°F (13°C) | 66°F (19°C) | 3.9" | 0.0" | 0.0 | 1.8 |
| October | 63°F (17°C) | 43°F (6°C) | 53°F (12°C) | 2.8" | 0.0" | 4.2 | 0.1 |
| November | 48°F (9°C) | 30°F (-1°C) | 39°F (4°C) | 2.6" | 1.7" | 17.5 | 0.0 |
| December | 35°F (2°C) | 20°F (-7°C) | 28°F (-2°C) | 2.1" | 5.9" | 26.8 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.7"
Snow: 9.0"
7.9 days with precipitation
February 1.9"
Snow: 6.6"
6.9 days with precipitation
March 2.4"
Snow: 2.3"
8.7 days with precipitation
April 3.8"
Snow: 0.4"
10.6 days with precipitation
May 5.3"
11.9 days with precipitation
June 4.6"
9.8 days with precipitation
July 4.0"
8.1 days with precipitation
August 3.9"
8.5 days with precipitation
September 3.9"
7.0 days with precipitation
October 2.8"
8.8 days with precipitation
November 2.6"
Snow: 1.7"
7.7 days with precipitation
December 2.1"
Snow: 5.9"
8.1 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 19
50% probability date
Last Spring Freeze
April 20
50% probability date
Growing Season
182 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,322
Higher = more heating needed
Cooling Degree Days
970
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Galesburg's climate means for you
Galesburg runs 50°F a year - peaking in July, coldest in January.
- Gardeners get about 182 frost-free days, with the last spring freeze near April 20 - plan the planting calendar around it, not the regional average.
- Energy bills track 6,322 heating and 970 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: Galesburg, IL
Galesburg, Illinois runs an annual average of 50°F, ranging from a mean daily high of 60°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 USC00113320, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Beyond temperature, Galesburg averages 39.0 inches of precipitation annually, with 25.9 inches typically falling as snow - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 182 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 20 and the first fall freeze near October 19. Turning to energy use, 6,322 heating degree days and 970 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Galesburg scores 63/100 (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 Galesburg, IL? ▼
The average annual temperature in Galesburg, Illinois is 50°F. The warmest month averages 84°F (29°C) and the coldest averages 14°F (-10°C).
How much rain does Galesburg get? ▼
Galesburg receives 39.0 inches of precipitation annually, including 25.9 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Galesburg? ▼
Galesburg 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 Galesburg? ▼
Galesburg has approximately 182 frost-free days per year, with the last spring freeze around April 20 and the first fall freeze around October 19.
How much energy does heating and cooling require in Galesburg? ▼
Galesburg has 6,322 heating degree days and 970 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 Galesburg climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00113320 near Galesburg.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00113320. 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.