Climate Comfort Score
64/100
Good
NOAA 1991–2020 normals 50°F annual avg Public-domain federal data
Willimantic Windham, CT Climate
Pulled from NOAA NCEI 1991–2020 normals →: average temperature, precipitation, and comfort score
- 50°F
- Avg annual temp
- 64/100
- Comfort score
- 43.3"
- Annual precip
- 168d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Willimantic Windham
Willimantic Windham, Connecticut averages 50°F a year and scores 64/100 on the comfort index - good, milder than 51% of U.S. cities.
- 50°F
- annual average temperature (NOAA normal)
- 64/100
- comfort score, milder than 51% of U.S. cities
- 43.3"
- yearly precipitation total
- 168 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
40°F
Annual Precip
43.3"
Comfort Score
64/100
Good
Avg Annual Temperature
50°F
30-year mean (NOAA NCEI)
Annual Precipitation
43.3"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Willimantic Windham) 64.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Willimantic Windham area.
How Willimantic Windham compares to every U.S. city
Willimantic Windham's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
64 Top 49% higher than 51% 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 Willimantic Windham
MethodologyThe chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Willimantic Windham, 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 | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 36°F (2°C) | 18°F (-8°C) | 27°F (-3°C) | 3.2" | 27.7 | 0.0 |
| February | 39°F (4°C) | 19°F (-7°C) | 29°F (-2°C) | 2.7" | 25.2 | 0.0 |
| March | 47°F (8°C) | 27°F (-3°C) | 37°F (3°C) | 4.0" | 22.9 | 0.0 |
| April | 59°F (15°C) | 37°F (3°C) | 48°F (9°C) | 4.0" | 9.4 | 0.1 |
| May | 70°F (21°C) | 47°F (8°C) | 59°F (15°C) | 3.4" | 0.8 | 0.8 |
| June | 78°F (26°C) | 56°F (13°C) | 67°F (19°C) | 3.9" | 0.0 | 2.1 |
| July | 83°F (28°C) | 62°F (17°C) | 72°F (22°C) | 2.7" | 0.0 | 4.4 |
| August | 81°F (27°C) | 60°F (16°C) | 71°F (21°C) | 4.4" | 0.0 | 2.7 |
| September | 74°F (24°C) | 52°F (11°C) | 63°F (17°C) | 4.1" | 0.1 | 0.7 |
| October | 63°F (17°C) | 41°F (5°C) | 52°F (11°C) | 3.8" | 5.8 | 0.0 |
| November | 52°F (11°C) | 31°F (0°C) | 42°F (5°C) | 3.5" | 17.5 | 0.0 |
| December | 41°F (5°C) | 24°F (-5°C) | 33°F (0°C) | 3.7" | 25.4 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 3.2"
10.4 days with precipitation
February 2.7"
10.2 days with precipitation
March 4.0"
10.7 days with precipitation
April 4.0"
12.1 days with precipitation
May 3.4"
13.5 days with precipitation
June 3.9"
13.0 days with precipitation
July 2.7"
13.3 days with precipitation
August 4.4"
12.5 days with precipitation
September 4.1"
13.0 days with precipitation
October 3.8"
12.9 days with precipitation
November 3.5"
10.3 days with precipitation
December 3.7"
11.3 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 13
50% probability date
Last Spring Freeze
April 28
50% probability date
Growing Season
168 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,094
Higher = more heating needed
Cooling Degree Days
626
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Willimantic Windham's climate means for you
Willimantic Windham runs 50°F a year - peaking in July, coldest in January.
- Gardeners get about 168 frost-free days, with the last spring freeze near April 28 - plan the planting calendar around it, not the regional average.
- Energy bills track 6,094 heating and 626 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: Willimantic Windham, CT
The NOAA 1991–2020 climate normals describe Willimantic Windham, Connecticut as a location with an annual average temperature of 50°F, ranging from a mean daily high of 60°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 USW00054767, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.
Willimantic Windham averages 43.3 inches of precipitation a year, predominantly as rainfall, and that matters as much to daily life here as temperature does. The frost-free season averages 168 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 28 and the first fall freeze near October 13. As for energy demand, 6,094 heating degree days and 626 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Willimantic Windham scores 64/100 (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 Willimantic Windham, CT? ▼
The average annual temperature in Willimantic Windham, Connecticut is 50°F. The warmest month averages 83°F (28°C) and the coldest averages 18°F (-8°C).
How much rain does Willimantic Windham get? ▼
Willimantic Windham receives 43.3 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Willimantic Windham? ▼
Willimantic Windham has a climate comfort score of 64/100 (Good), milder than 51% of U.S. cities in the PlainClimate database.
When is the growing season in Willimantic Windham? ▼
Willimantic Windham has approximately 168 frost-free days per year, with the last spring freeze around April 28 and the first fall freeze around October 13.
How much energy does heating and cooling require in Willimantic Windham? ▼
Willimantic Windham has 6,094 heating degree days and 626 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 Willimantic Windham climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USW00054767 near Willimantic Windham.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00054767. 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.