Hartford Bradley, CT Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Hartford Bradley's primary NOAA station, HARTFORD BRADLEY INTL AP.
The climate verdict for Hartford Bradley
Water is the standout signal in Hartford Bradley, Connecticut: 47.0 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 51°F. At 54/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 31% of scores.
- 51°F
- annual average temperature (NOAA normal)
- 54/100
- comfort score, above 31% of station-mapped location scores
- 47.0"
- annual precipitation · 52" snow
- 178 days
- frost-free days per growing season
Hartford Bradley: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00014740 · Hartford Bradley, CT 51°F mean · 47.0" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 51°F
- RANK-MID #3,087
- PHOTO-FINISH ≈ Chief Joseph Dam
- PRCP-MID 47.0"
- SWING-WIDE 47°F
- COMF-LOW 54/100
- LOAD-HEAT 5,883 HDD
- STN-1 USW00014740
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Chief Joseph Dam, WA (+ 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.
- Hartford Bradley (this station) 51°F
- Cold Sidney, OH 51°F
- Hot Champaign, IL 51°F
- Near Chief Joseph Dam, WA 51°F
- Near Lawrence, MA 51°F
Climate Living Index · Hartford Bradley
Hartford Bradley: 50/100 · grade D
Hartford Bradley publishes all six Living Index dimensions from NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals.
PlainClimate-derived for Hartford Bradley, not an official NOAA rating. Rankings still use Comfort Score 54/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Summer moisture balance | 60.6°F mean dew point | 59/100 · C |
| Normal heat + freeze calendar | 131 calendar days | 58/100 · C |
| Precipitation balance | 47.0 in · 12.0 from 35 in | 58/100 · C |
| Frost-free season | 178 days/year | 48/100 · D |
| Annual temperature balance | 51.0°F · 16.5° from 67.5°F | 45/100 · D |
| Snowfall burden | 51.7 inches/year | 20/100 · F |
Hartford Bradley · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Hartford Bradley is a continental Köppen climate: Dfa
Coldest-month mean 27.1°F and warmest-month mean 74.3°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
- 74.3°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 Hartford Bradley sits across the climate record
Three NOAA fields for Hartford Bradley's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 45th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Top 27% wettest
- Hartford Bradley's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- 69th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Hartford Bradley compares across U.S. station-mapped locations
Hartford Bradley's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
54 31st percentile score exceeds 31% 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%). This entry sits in this band.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 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
Hartford Bradley's measured station temperature trend
MethodologyAcross 74 complete annual observations from 1943 to 2023, HARTFORD BRADLEY INTL AP warmed at a fitted rate of 0.25°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Hartford Bradley primary station fitted change +0.25 °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) | 3.3" | 14.2" | 27.2 | 0.0 |
| February | 39°F (4°C) | 21°F (-6°C) | 30°F (-1°C) | 3.1" | 14.8" | 24.8 | 0.0 |
| March | 47°F (8°C) | 28°F (-2°C) | 38°F (3°C) | 3.8" | 9.4" | 21.4 | 0.0 |
| April | 61°F (16°C) | 38°F (4°C) | 50°F (10°C) | 3.9" | 1.1" | 7.2 | 0.3 |
| May | 72°F (22°C) | 48°F (9°C) | 60°F (16°C) | 3.8" | 0.0" | 0.4 | 1.4 |
| June | 80°F (27°C) | 58°F (14°C) | 69°F (21°C) | 4.3" | 0.0" | 0.0 | 3.5 |
| July | 85°F (30°C) | 63°F (17°C) | 74°F (24°C) | 4.2" | 0.0" | 0.0 | 8.1 |
| August | 83°F (29°C) | 62°F (17°C) | 73°F (23°C) | 4.2" | 0.0" | 0.0 | 5.1 |
| September | 76°F (24°C) | 54°F (12°C) | 65°F (18°C) | 4.4" | 0.0" | 0.1 | 1.2 |
| October | 64°F (18°C) | 42°F (6°C) | 53°F (12°C) | 4.5" | 0.7" | 4.1 | 0.0 |
| November | 52°F (11°C) | 33°F (1°C) | 42°F (6°C) | 3.5" | 1.4" | 15.4 | 0.0 |
| December | 41°F (5°C) | 25°F (-4°C) | 33°F (0°C) | 4.1" | 10.1" | 25.4 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 86°F around July 15, short of 90°F on every date, while 131 dates carry a normal low at or below freezing, the coldest 18°F near January 22.
The freezing stretch
The normal low stays at or below 32°F into March 28, then returns to freezing around November 19, covering 131 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 16, when 40% of years recorded at least a hundredth of an inch. The driest is September 3 at 30%. Summed across the calendar, that is about 131 wet dates a year.
The widest day
May 7 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 Hartford Bradley.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 14.2"
10.9 days with precipitation
Snow: 14.8"
10.5 days with precipitation
Snow: 9.4"
11.2 days with precipitation
Snow: 1.1"
11.5 days with precipitation
12.3 days with precipitation
11.8 days with precipitation
10.7 days with precipitation
10.4 days with precipitation
9.2 days with precipitation
Snow: 0.7"
10.5 days with precipitation
Snow: 1.4"
9.9 days with precipitation
Snow: 10.1"
11.5 days with precipitation
Hartford Bradley spreads its precipitation across the year
Neither half of the year dominates here: June through August take 27% of the annual total and December through February 22%, with neither reaching the 35% that would mark a distinct wet season. Hartford Bradley has no dry season to plan around, though it does carry a wide 47.2°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: October averages 4.5" and February 3.1". 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 Hartford Bradley, it arrives in quantity
47.1" of precipitation falls across only about 130 wet days here, averaging 0.36 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 130 a year, 36% of all days
- Average depth per wet day
- 0.36 inches
- Most wet days
- May, about 12
- Fewest wet days
- September, 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 Hartford Bradley
Hartford Bradley averages 51.7 inches of snowfall a year, with February the snowiest month on the normals, spread across roughly 22 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: 51.7 inches of depth.
- Days recording measurable snow: about 22 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 11% 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 16
50% probability date
Last Spring Freeze
April 21
50% probability date
Growing Season
178 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,883
Higher = more heating needed
Cooling Degree Days
819
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 | 61% | 8.2 | 23% | 33% |
| February | 60% | 9.1 | 19% | 38% |
| March | 56% | 9.1 | 22% | 37% |
| April | 56% | 8.5 | 21% | 34% |
| May | 66% | 7.6 | 18% | 34% |
| June | 67% | 6.8 | 20% | 21% |
| July | 69% | 6.2 | 21% | 22% |
| August | 70% | 6.3 | 23% | 19% |
| September | 74% | 6.6 | 27% | 27% |
| October | 67% | 7.7 | 26% | 33% |
| November | 67% | 7.7 | 19% | 36% |
| December | 66% | 8.2 | 20% | 36% |
Nationwide similar cities
Other rankable U.S. places outside CT closest to Hartford Bradley 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 (51°F here).
- Deseret, UT 51°F · 0.0°F off
- Elwood, IN 51°F · 0.0°F off
- Gothenburg, NE 51°F · 0.0°F off
- Hastings, NE 51°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (47.0" here), excluding temperature-peer places.
- Alta, UT 47.1" · 0.0" off
- Daingerfield, TX 47.1" · 0.0" off
- Greensburg, IN 47.0" · 0.0" off
- Mansfield, MO 47.1" · 0.0" off
Snow and freeze rhythm
When cold and snow define Hartford Bradley
heating led · wet · mid swing
Hartford Bradley's energy balance leans toward cold weather: 5,883 annual heating degree days against 819 for cooling. Its 47.2°F seasonal range still makes the monthly rows more useful than the annual average alone.
Hartford Bradley's frost-free season lasts about 178 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
-
1. Hartford Bradley 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. Hartford Bradley typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Hartford Bradley snow peak
February
Hartford Bradley averages 51.7 inches of snow a year, with February the snowiest month on the normals.
Questions about Hartford Bradley's climate
How much snow does Hartford Bradley get? ▼
How cold does Hartford Bradley get in winter? ▼
How much energy does heating and cooling require in Hartford Bradley? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Hartford Bradley's primary station: HARTFORD BRADLEY INTL AP (USW00014740). 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 Hartford Bradley; 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 Hartford Bradley 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.