Storrs, 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 Storrs's primary NOAA station, STORRS.
The climate verdict for Storrs
Water is the standout signal in Storrs, Connecticut: 49.3 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 50°F. Its climate comfort score of 63/100 (good) lands mid-pack nationally, exceeding 46% of station-mapped location scores.
- 50°F
- annual average temperature (NOAA normal)
- 63/100
- comfort score, above 46% of station-mapped location scores
- 49.3"
- annual precipitation · 39" snow
- 186 days
- frost-free days per growing season
Storrs: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00068138 · Storrs, CT 50°F mean · 49.3" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-MID · SWING-MID · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 50°F
- RANK-COOL #2,607
- PHOTO-FINISH ≈ Roxborough Stat…
- PRCP-MID 49.3"
- SWING-MID 45°F
- COMF-MID 63/100
- LOAD-HEAT 6,141 HDD
- STN-1 USC00068138
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Roxborough State Park, CO (+ 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.
- Storrs (this station) 50°F
- Cold Indiana, PA 50°F
- Hot Shawnee State P…, PA 50°F
- Near Roxborough Stat…, CO 50°F
- Near Danbury, CT 50°F
Climate Living Index · Storrs
Storrs: 47/100 · grade D
Storrs publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Storrs, not an official NOAA rating. Rankings still use Comfort Score 63/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 129 calendar days | 59/100 · C |
| Frost-free season | 186 days/year | 54/100 · D |
| Precipitation balance | 49.3 in · 14.3 from 35 in | 50/100 · D |
| Annual temperature balance | 49.6°F · 17.9° from 67.5°F | 39/100 · F |
| Snowfall burden | 39.0 inches/year | 29/100 · F |
Storrs · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Storrs is a continental Köppen climate: Dfa
Coldest-month mean 26.9°F and warmest-month mean 71.7°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
- 71.7°F
- Coldest month
- 26.9°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 Storrs sits across the climate record
Three NOAA fields for Storrs's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 38th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Top 21% wettest
- Storrs's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- 58th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Storrs compares across U.S. station-mapped locations
Storrs's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
63 46th percentile score exceeds 46% 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
Storrs's measured station temperature trend
MethodologyAcross 96 complete annual observations from 1890 to 2025, STORRS warmed at a fitted rate of 0.19°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Storrs primary station fitted change +0.19 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 35°F (2°C) | 19°F (-7°C) | 27°F (-3°C) | 3.6" | 8.3" | 27.2 | 0.0 |
| February | 37°F (3°C) | 20°F (-6°C) | 29°F (-2°C) | 3.0" | 14.1" | 25.4 | 0.0 |
| March | 45°F (7°C) | 28°F (-2°C) | 36°F (2°C) | 4.4" | 6.3" | 22.0 | 0.0 |
| April | 57°F (14°C) | 38°F (3°C) | 48°F (9°C) | 4.2" | 1.7" | 7.4 | 0.0 |
| May | 68°F (20°C) | 48°F (9°C) | 58°F (14°C) | 3.7" | 0.0" | 0.2 | 0.2 |
| June | 76°F (24°C) | 57°F (14°C) | 66°F (19°C) | 4.5" | 0.0" | 0.0 | 0.3 |
| July | 81°F (27°C) | 63°F (17°C) | 72°F (22°C) | 4.0" | 0.0" | 0.0 | 1.5 |
| August | 79°F (26°C) | 61°F (16°C) | 70°F (21°C) | 4.3" | 0.0" | 0.0 | 0.6 |
| September | 73°F (23°C) | 54°F (12°C) | 63°F (17°C) | 4.5" | 0.0" | 0.0 | 0.1 |
| October | 61°F (16°C) | 43°F (6°C) | 52°F (11°C) | 4.6" | 0.3" | 2.8 | 0.0 |
| November | 50°F (10°C) | 34°F (1°C) | 42°F (6°C) | 3.9" | 1.1" | 13.4 | 0.0 |
| December | 40°F (5°C) | 25°F (-4°C) | 33°F (0°C) | 4.5" | 7.2" | 24.3 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 81°F around July 13, short of 90°F on every date, while 129 dates carry a normal low at or below freezing, the coldest 18°F near January 23.
The freezing stretch
The normal low stays at or below 32°F into March 30, then returns to freezing around November 23, covering 129 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 May 8, when 41% of years recorded at least a hundredth of an inch. The driest is September 1 at 28%. Summed across the calendar, that is about 124 wet dates a year.
The widest day
May 7 carries the biggest normal gap between afternoon and dawn, 20°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Storrs.
Where Storrs Stands Nationally
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 20°F.
Storrs earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 8.3"
10.2 days with precipitation
Snow: 14.1"
9.0 days with precipitation
Snow: 6.3"
10.2 days with precipitation
Snow: 1.7"
11.3 days with precipitation
12.7 days with precipitation
10.9 days with precipitation
10.5 days with precipitation
9.5 days with precipitation
9.0 days with precipitation
Snow: 0.3"
10.6 days with precipitation
Snow: 1.1"
9.1 days with precipitation
Snow: 7.2"
10.4 days with precipitation
Storrs spreads its precipitation across the year
Neither half of the year dominates here: June through August take 26% of the annual total and December through February 23%, with neither reaching the 35% that would mark a distinct wet season. Storrs has no dry season to plan around, though it does carry a 44.8°F seasonal spread.
The gap between the wettest and driest month still matters: October averages 4.6" and February 3.0". The three wettest months together take 28% 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.
When it rains in Storrs, it arrives in quantity
49.3" of precipitation falls across only about 123 wet days here, averaging 0.40 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 123 a year, 34% of all days
- Average depth per wet day
- 0.40 inches
- Most wet days
- May, about 13
- Fewest wet days
- February, about 9
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Winter brings real snow to Storrs
Storrs averages 39.0 inches of snowfall a year, with February the snowiest month on the normals, spread across roughly 14 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 39.0 inches of depth.
- Days recording measurable snow: about 14 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 8% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
October 22
50% probability date
Last Spring Freeze
April 19
50% probability date
Growing Season
186 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,141
Higher = more heating needed
Cooling Degree Days
569
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside CT closest to Storrs 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).
- Altoona, PA 50°F · 0.0°F off
- Castle Rock, CO 50°F · 0.0°F off
- Donegal, PA 50°F · 0.0°F off
- Hershey, NE 50°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (49.3" here), excluding temperature-peer places.
- Homerville, GA 49.3" · 0.0" off
- Marion, SC 49.3" · 0.0" off
- Subiaco, AR 49.3" · 0.0" off
- New Madrid, MO 49.3" · 0.0" off
Snow and freeze rhythm
When cold and snow define Storrs
heating led · wet · mid swing
Storrs's energy balance leans toward cold weather: 6,141 annual heating degree days against 569 for cooling. Its 44.8°F seasonal range still makes the monthly rows more useful than the annual average alone.
Storrs's frost-free season lasts about 186 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
-
1. Storrs coldest normal
January
The monthly mean of 27°F (-3°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. Storrs typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Storrs snow peak
February
Storrs averages 39.0 inches of snow a year, with February the snowiest month on the normals.
Questions about Storrs's climate
How much snow does Storrs get? ▼
How cold does Storrs get in winter? ▼
How much energy does heating and cooling require in Storrs? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Storrs's primary station: STORRS (USC00068138). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as a census-designated place (GEOID 0973980), not an incorporated municipality. Match rule for Storrs: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Storrs 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.