Climate Comfort Score
59/100
Moderate
NOAA 1991–2020 normals 51°F annual avg Public-domain federal data
Moline Quad City, IL Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 51°F
- Avg annual temp
- 59/100
- Comfort score
- 38.3"
- Annual precip
- 177d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Moline Quad City
Moline Quad City, Illinois averages 51°F a year and scores 59/100 on the comfort index - moderate, milder than 39% of U.S. cities.
- 51°F
- average temperature, NOAA 1991-2020 normal
- 59/100
- comfort score, milder than 39% of U.S. cities
- 38.3"
- annual precipitation · 36" snow
- 177 days
- frost-free growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
51°F (11°C)
Avg High
62°F
Avg Low
41°F
Annual Precip
38.3"
Annual Snow
36.1"
Comfort Score
59/100
Moderate
Avg Annual Temperature
51°F
30-year mean (NOAA NCEI)
Annual Precipitation
38.3"
Plus 36.1" of snow
Comfort score vs national 100-point ceiling (Moline Quad City) 59.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Moline Quad City area.
How Moline Quad City compares to every U.S. city
Moline Quad City's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
59 Top 61% higher than 39% 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 Moline Quad City
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Moline Quad City 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 | 32°F (0°C) | 15°F (-10°C) | 23°F (-5°C) | 1.7" | 10.8" | 28.7 | 0.0 |
| February | 37°F (3°C) | 19°F (-7°C) | 28°F (-2°C) | 1.8" | 8.6" | 24.8 | 0.0 |
| March | 50°F (10°C) | 30°F (-1°C) | 40°F (4°C) | 2.6" | 4.4" | 19.6 | 0.0 |
| April | 63°F (17°C) | 40°F (4°C) | 51°F (11°C) | 3.8" | 1.1" | 6.3 | 0.1 |
| May | 74°F (23°C) | 51°F (11°C) | 63°F (17°C) | 4.7" | 0.0" | 0.4 | 1.1 |
| June | 83°F (28°C) | 61°F (16°C) | 72°F (22°C) | 5.0" | 0.0" | 0.0 | 5.4 |
| July | 86°F (30°C) | 65°F (18°C) | 76°F (24°C) | 4.2" | 0.0" | 0.0 | 8.1 |
| August | 84°F (29°C) | 63°F (17°C) | 73°F (23°C) | 4.0" | 0.0" | 0.0 | 4.9 |
| September | 78°F (26°C) | 54°F (12°C) | 66°F (19°C) | 3.3" | 0.0" | 0.2 | 2.5 |
| October | 65°F (18°C) | 43°F (6°C) | 54°F (12°C) | 2.8" | 0.3" | 4.6 | 0.1 |
| November | 50°F (10°C) | 31°F (-1°C) | 40°F (5°C) | 2.3" | 2.1" | 17.4 | 0.0 |
| December | 37°F (3°C) | 21°F (-6°C) | 29°F (-2°C) | 2.0" | 8.8" | 26.6 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.7"
Snow: 10.8"
9.3 days with precipitation
February 1.8"
Snow: 8.6"
8.7 days with precipitation
March 2.6"
Snow: 4.4"
10.4 days with precipitation
April 3.8"
Snow: 1.1"
11.3 days with precipitation
May 4.7"
12.2 days with precipitation
June 5.0"
11.3 days with precipitation
July 4.2"
8.6 days with precipitation
August 4.0"
9.4 days with precipitation
September 3.3"
8.4 days with precipitation
October 2.8"
Snow: 0.3"
9.0 days with precipitation
November 2.3"
Snow: 2.1"
8.9 days with precipitation
December 2.0"
Snow: 8.8"
9.5 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 18
50% probability date
Last Spring Freeze
April 24
50% probability date
Growing Season
177 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,024
Higher = more heating needed
Cooling Degree Days
1,041
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 | 73% | 8.9 | 44% | 39% |
| February | 70% | 9.6 | 45% | 38% |
| March | 62% | 10.4 | 46% | 32% |
| April | 62% | 9.4 | 49% | 28% |
| May | 67% | 7.5 | 52% | 20% |
| June | 69% | 6.7 | 58% | 12% |
| July | 72% | 5.7 | 61% | 10% |
| August | 73% | 6.0 | 61% | 12% |
| September | 68% | 7.2 | 62% | 19% |
| October | 68% | 8.6 | 52% | 33% |
| November | 73% | 8.8 | 48% | 39% |
| December | 75% | 9.0 | 46% | 41% |
What Moline Quad City's climate means for you
Moline Quad City runs 51°F a year - peaking in July, coldest in January.
- Gardeners get about 177 frost-free days, with the last spring freeze near April 24 - plan the planting calendar around it, not the regional average.
- Energy bills track 6,024 heating and 1,041 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: Moline Quad City, IL
Moline Quad City, Illinois runs an annual average of 51°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 USW00014923, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Moline Quad City averages 38.3 inches of precipitation a year, with 36.1 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 177 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 24 and the first fall freeze near October 18. As for energy demand, 6,024 heating degree days and 1,041 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Moline Quad City scores 59/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above turn that into a planning tool: expect the mildest highs and lows in the shoulder seasons, July-driven heat at the peak of summer, and January-driven cold at the depth of winter. Every number here is a thirty-year average, not a forecast, so any given year can and does run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in Moline Quad City, IL? ▼
The average annual temperature in Moline Quad City, Illinois is 51°F. The warmest month averages 86°F (30°C) and the coldest averages 15°F (-10°C).
How much rain does Moline Quad City get? ▼
Moline Quad City receives 38.3 inches of precipitation annually, including 36.1 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Moline Quad City? ▼
Moline Quad City has a climate comfort score of 59/100 (Moderate), milder than 39% of U.S. cities in the PlainClimate database.
When is the growing season in Moline Quad City? ▼
Moline Quad City has approximately 177 frost-free days per year, with the last spring freeze around April 24 and the first fall freeze around October 18.
How much energy does heating and cooling require in Moline Quad City? ▼
Moline Quad City has 6,024 heating degree days and 1,041 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 Moline Quad City climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USW00014923 near Moline Quad City.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00014923. 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.