Westfield, MA 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 Westfield's primary NOAA station, WESTFIELD 3 SW.
The climate verdict for Westfield
Water is the standout signal in Westfield, Massachusetts: 52.4 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 49°F. At 52/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 24% of scores.
- 49°F
- annual average temperature (NOAA normal)
- 52/100
- comfort score, above 24% of station-mapped location scores
- 52.4"
- precipitation, annual total
- 172 days
- frost-free days per growing season
Westfield: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00199193 · Westfield, MA 49°F mean · 52.4" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-WET · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 49°F
- RANK-COOL #2,333
- PHOTO-FINISH ≈ Penn Yan
- PRCP-WET 52.4"
- SWING-WIDE 48°F
- COMF-LOW 52/100
- LOAD-HEAT 6,519 HDD
- STN-1 USC00199193
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Penn Yan, NY (+ 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 MA station list.
- Westfield (this station) 49°F
- Cold Chippewa Lake, OH 49°F
- Hot New Raymer, CO 49°F
- Near Penn Yan, NY 49°F
- Near Canandaigua, NY 49°F
Climate Living Index · Westfield
Westfield: 41/100 · grade D
Westfield publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Westfield, not an official NOAA rating. Rankings still use Comfort Score 52/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 148 calendar days | 48/100 · D |
| Frost-free season | 172 days/year | 43/100 · D |
| Precipitation balance | 52.4 in · 17.4 from 35 in | 38/100 · F |
| Annual temperature balance | 48.7°F · 18.8° from 67.5°F | 35/100 · F |
Westfield · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Westfield is a continental Köppen climate: Dfa
Coldest-month mean 24.6°F and warmest-month mean 72.3°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
- 72.3°F
- Coldest month
- 24.6°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 Westfield sits across the climate record
Three NOAA fields for Westfield's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 34th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Top 14% wettest
- Westfield's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Wider than 71%
- Warmest-to-coldest month gap for Westfield is large versus 6,861 complete station-years.
How Westfield compares across U.S. station-mapped locations
Westfield's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
52 24th percentile score exceeds 24% 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 33°F (1°C) | 16°F (-9°C) | 25°F (-4°C) | 4.0" | 29.6 | 0.0 |
| February | 37°F (3°C) | 17°F (-8°C) | 27°F (-3°C) | 3.6" | 27.0 | 0.0 |
| March | 45°F (7°C) | 25°F (-4°C) | 35°F (2°C) | 3.9" | 24.1 | 0.0 |
| April | 58°F (15°C) | 35°F (2°C) | 47°F (8°C) | 4.7" | 10.9 | 0.2 |
| May | 70°F (21°C) | 46°F (8°C) | 58°F (15°C) | 4.2" | 0.7 | 0.6 |
| June | 78°F (26°C) | 56°F (13°C) | 67°F (19°C) | 5.1" | 0.0 | 2.1 |
| July | 84°F (29°C) | 61°F (16°C) | 72°F (22°C) | 4.3" | 0.0 | 6.6 |
| August | 82°F (28°C) | 59°F (15°C) | 71°F (21°C) | 3.8" | 0.0 | 3.0 |
| September | 75°F (24°C) | 52°F (11°C) | 63°F (17°C) | 4.4" | 0.1 | 1.6 |
| October | 62°F (16°C) | 40°F (5°C) | 51°F (11°C) | 5.2" | 4.3 | 0.0 |
| November | 49°F (9°C) | 31°F (-1°C) | 40°F (4°C) | 4.1" | 19.2 | 0.0 |
| December | 38°F (3°C) | 22°F (-6°C) | 30°F (-1°C) | 5.2" | 27.6 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 84°F around July 18, short of 90°F on every date, while 148 dates carry a normal low at or below freezing, the coldest 15°F near January 25.
The freezing stretch
The normal low stays at or below 32°F into April 7, then returns to freezing around November 12, covering 148 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 April 30, when 46% of years recorded at least a hundredth of an inch. The driest is September 4 at 28%. Summed across the calendar, that is about 133 wet dates a year.
The widest day
April 29 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 Westfield.
Where Westfield Stands Nationally
The normal water year runs well above the national norm at roughly 52 inches.
Westfield 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
9.6 days with precipitation
10.1 days with precipitation
9.6 days with precipitation
12.9 days with precipitation
13.8 days with precipitation
12.4 days with precipitation
11.4 days with precipitation
10.6 days with precipitation
8.4 days with precipitation
12.4 days with precipitation
9.8 days with precipitation
11.8 days with precipitation
Westfield 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 24%, with neither reaching the 35% that would mark a distinct wet season. Westfield has no dry season to plan around, though it does carry a wide 47.7°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: October averages 5.2" and February 3.6". 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.
When it rains in Westfield, it arrives in quantity
52.4" of precipitation falls across only about 133 wet days here, averaging 0.39 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 133 a year, 36% of all days
- Average depth per wet day
- 0.39 inches
- Most wet days
- May, about 14
- Fewest wet days
- September, about 8
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.
Frost Dates & Growing Season
First Fall Freeze
October 17
50% probability date
Last Spring Freeze
April 28
50% probability date
Growing Season
172 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,519
Higher = more heating needed
Cooling Degree Days
612
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside MA closest to Westfield 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 (49°F here).
- Clarkson, NE 49°F · 0.0°F off
- Cuba, NM 49°F · 0.0°F off
- Dove Creek, CO 49°F · 0.0°F off
- Guernsey, WY 49°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (52.4" here), excluding temperature-peer places.
- Battle Ground, WA 52.4" · 0.0" off
- Stendal, IN 52.3" · 0.0" off
- Inverness, FL 52.4" · 0.0" off
- Bradfordsville, KY 52.4" · 0.0" off
Data-derived climate profile
How Westfield's climate pattern fits together
heating led · wet · mid swing
Westfield's energy balance leans toward cold weather: 6,519 annual heating degree days against 612 for cooling. Its 47.7°F seasonal range still makes the monthly rows more useful than the annual average alone.
Westfield's frost-free season lasts about 172 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 Westfield's middle-range seasonal profile. The measured spread is 47.7°F. The annual average is 49°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Alongside its heating load, Westfield carries 52.4 inches of precipitation in a normal year, inside PlainClimate's wet range. Snowfall is not added to the interpretation because its annual value is missing. That distinction matters because a wet annual total can arrive as rain, snow, or a mixture at different times.
These labels group NOAA 1991-2020 normals from Westfield'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 Westfield, not an official NOAA class or a year-ahead forecast.
Questions about Westfield's climate
How much rain does Westfield get? ▼
How cold does Westfield get in winter? ▼
How much energy does heating and cooling require in Westfield? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Westfield's primary station: WESTFIELD 3 SW (USC00199193). 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 an incorporated place (GEOID 2576030). Match rule for Westfield: 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 Westfield 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.