Willimantic Windham, CT Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Willimantic Windham's primary NOAA station, WILLIMANTIC WINDHAM AP.
The climate verdict for Willimantic Windham
Willimantic Windham, Connecticut has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 50°F. Its climate comfort score of 64/100 (good) lands mid-pack nationally, exceeding 49% of station-mapped location scores.
- 50°F
- annual average temperature (NOAA normal)
- 64/100
- comfort score, above 49% of station-mapped location scores
- 43.3"
- yearly precipitation total
- 168 days
- frost-free days per growing season
Willimantic Windham: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00054767 · Willimantic Windham, CT 50°F mean · 43.3" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 50°F
- RANK-COOL #2,676
- PHOTO-FINISH ≈ Youngstown
- PRCP-MID 43.3"
- SWING-WIDE 45°F
- COMF-MID 64/100
- LOAD-HEAT 6,094 HDD
- STN-1 USW00054767
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Youngstown, OH (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every CT station list.
- Willimantic Win… (this station) 50°F
- Cold Beverly, MA 50°F
- Hot Nws Boston/nort…, MA 50°F
- Near Youngstown, OH 50°F
- Near Millport, OH 50°F
Climate Living Index · Willimantic Windham
Willimantic Windham: 50/100 · grade D
Willimantic Windham publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Willimantic Windham, not an official NOAA rating. Rankings still use Comfort Score 64/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 43.3 in · 8.3 from 35 in | 71/100 · B |
| Normal heat + freeze calendar | 141 calendar days | 52/100 · D |
| Annual temperature balance | 49.9°F · 17.6° from 67.5°F | 40/100 · D |
| Frost-free season | 168 days/year | 40/100 · D |
Willimantic Windham · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Willimantic Windham is a continental Köppen climate: Dfa
Coldest-month mean 27.1°F and warmest-month mean 72.4°F place this station in continental, no dry season, hot summer climates (Dfa). Class Dfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, hot summer.
- Köppen code
- Dfa
- Group
- Continental
- Warmest month
- 72.4°F
- Coldest month
- 27.1°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Willimantic Windham sits across the climate record
Three NOAA fields for Willimantic Windham's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 39th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 65th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- 61st percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Willimantic Windham compares across U.S. station-mapped locations
Willimantic Windham's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
64 49th percentile score exceeds 49% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). This entry sits in this band.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
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 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 83°F around July 15, short of 90°F on every date, while 141 dates carry a normal low at or below freezing, the coldest 17°F near January 26.
The freezing stretch
The normal low stays at or below 32°F into April 1, then returns to freezing around November 13, covering 141 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is September 29, when 45% of years recorded at least a hundredth of an inch. The driest is January 25 at 33%. Summed across the calendar, that is about 143 wet dates a year.
The widest day
April 30 carries the biggest normal gap between afternoon and dawn, 24°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Willimantic Windham.
Monthly Precipitation
Average monthly rainfall
10.4 days with precipitation
10.2 days with precipitation
10.7 days with precipitation
12.1 days with precipitation
13.5 days with precipitation
13.0 days with precipitation
13.3 days with precipitation
12.5 days with precipitation
13.0 days with precipitation
12.9 days with precipitation
10.3 days with precipitation
11.3 days with precipitation
Willimantic Windham spreads its precipitation across the year
Neither half of the year dominates here: June through August take 25% of the annual total and December through February 22%, with neither reaching the 35% that would mark a distinct wet season. Willimantic Windham has no dry season to plan around, though it does carry a wide 45.3°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: August averages 4.4" and July 2.7". The three wettest months together take 29% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
How Willimantic Windham's precipitation splits across the calendar
About 143 days a year record measurable precipitation here, carrying 43.3" between them, or roughly 0.30 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
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
Nationwide similar cities
Other rankable U.S. places outside CT closest to Willimantic Windham on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (50°F here).
- Cedar Rapids, IA 50°F · 0.0°F off
- Centerville, IA 50°F · 0.0°F off
- Chalmers, IN 50°F · 0.0°F off
- Coulee Dam, WA 50°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (43.3" here), excluding temperature-peer places.
- Jamestown, IN 43.3" · 0.0" off
- Osceola, MO 43.2" · 0.0" off
- Xenia, OH 43.3" · 0.0" off
- Gorham, NH 43.3" · 0.0" off
Data-derived climate profile
How Willimantic Windham's climate pattern fits together
heating led · moderate · mid swing
Willimantic Windham's energy balance leans toward cold weather: 6,094 annual heating degree days against 626 for cooling. Its 45.3°F seasonal range still makes the monthly rows more useful than the annual average alone.
Willimantic Windham's frost-free season lasts about 168 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Willimantic Windham's middle-range seasonal profile. The measured spread is 45.3°F. The annual average is 50°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Willimantic Windham's 43.3 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Willimantic Windham's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Willimantic Windham, not an official NOAA class or a year-ahead forecast.
Questions about Willimantic Windham's climate
How much rain does Willimantic Windham get? ▼
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Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Willimantic Windham's primary station: WILLIMANTIC WINDHAM AP (USW00054767). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Willimantic Windham; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Willimantic Windham comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.