Nws Boston/norton, MA 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 Nws Boston/norton's primary NOAA station, NWS BOSTON/NORTON.
The climate verdict for Nws Boston/norton
Water is the standout signal in Nws Boston/norton, Massachusetts: 49.8 inches of precipitation in a normal year. Against that wet profile, NOAA records 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
- average temperature, NOAA 1991-2020 normal
- 64/100
- comfort score, above 49% of station-mapped location scores
- 49.8"
- precipitation, annual total
- 177 days
- frost-free days per growing season
Nws Boston/norton: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00198368 · Nws Boston/norton, MA 50°F mean · 49.8" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 50°F
- RANK-MID #2,744
- PHOTO-FINISH ≈ Methow
- PRCP-MID 49.8"
- SWING-WIDE 46°F
- COMF-MID 64/100
- LOAD-HEAT 6,094 HDD
- STN-1 USC00198368
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Methow, 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 MA station list.
- Nws Boston/nort… (this station) 50°F
- Hot Fields, OR 50°F
- Near Methow, WA 50°F
- Near Longmont, CO 50°F
- Near La Grange, WY 50°F
Climate Living Index · Nws Boston/norton
Nws Boston/norton: 48/100 · grade D
Nws Boston/norton publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Nws Boston/norton, not an official NOAA rating. Rankings still use Comfort Score 64/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 137 calendar days | 55/100 · C |
| Frost-free season | 177 days/year | 48/100 · D |
| Precipitation balance | 49.8 in · 14.8 from 35 in | 48/100 · D |
| Annual temperature balance | 50.0°F · 17.5° from 67.5°F | 40/100 · D |
Nws Boston/norton · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Nws Boston/norton is a continental Köppen climate: Dfa
Coldest-month mean 27.3°F and warmest-month mean 72.9°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
- 72.9°F
- Coldest month
- 27.3°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 Nws Boston/norton sits across the climate record
Three NOAA fields for Nws Boston/norton's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 40th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Top 20% wettest
- Nws Boston/norton's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- 62nd percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Nws Boston/norton compares across U.S. station-mapped locations
Nws Boston/norton'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) | 4.2" | 27.7 | 0.0 |
| February | 39°F (4°C) | 20°F (-7°C) | 30°F (-1°C) | 3.6" | 25.0 | 0.0 |
| March | 46°F (8°C) | 27°F (-3°C) | 36°F (2°C) | 5.2" | 22.7 | 0.0 |
| April | 57°F (14°C) | 37°F (3°C) | 47°F (8°C) | 4.4" | 8.5 | 0.0 |
| May | 68°F (20°C) | 47°F (8°C) | 58°F (14°C) | 3.3" | 0.0 | 1.0 |
| June | 77°F (25°C) | 57°F (14°C) | 67°F (19°C) | 4.5" | 0.0 | 1.6 |
| July | 83°F (28°C) | 63°F (17°C) | 73°F (23°C) | 3.2" | 0.0 | 8.4 |
| August | 82°F (28°C) | 61°F (16°C) | 71°F (22°C) | 3.6" | 0.0 | 4.4 |
| September | 74°F (23°C) | 54°F (12°C) | 64°F (18°C) | 4.2" | 0.0 | 1.5 |
| October | 62°F (17°C) | 42°F (5°C) | 52°F (11°C) | 4.8" | 4.0 | 0.0 |
| November | 52°F (11°C) | 33°F (0°C) | 42°F (6°C) | 4.3" | 17.8 | 0.0 |
| December | 42°F (5°C) | 24°F (-4°C) | 33°F (1°C) | 4.6" | 24.2 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 83°F around July 17, short of 90°F on every date, while 137 dates carry a normal low at or below freezing, the coldest 17°F near January 22.
The freezing stretch
The normal low stays at or below 32°F into April 2, then returns to freezing around November 18, covering 137 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 22, when 46% of years recorded at least a hundredth of an inch. The driest is September 1 at 28%. Summed across the calendar, that is about 140 wet dates a year.
The widest day
May 3 carries the biggest normal gap between afternoon and dawn, 21°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Nws Boston/norton.
Where Nws Boston/norton Stands Nationally
The normal water year runs well above the national norm at roughly 50 inches.
Days and nights track unusually close together; the widest normal swing, about 21°F, is narrower than most stations record.
Nws Boston/norton earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
11.2 days with precipitation
11.2 days with precipitation
10.9 days with precipitation
13.9 days with precipitation
13.4 days with precipitation
11.8 days with precipitation
11.0 days with precipitation
9.5 days with precipitation
8.8 days with precipitation
13.9 days with precipitation
10.6 days with precipitation
13.1 days with precipitation
Nws Boston/norton spreads its precipitation across the year
Neither half of the year dominates here: June through August take 23% of the annual total and December through February 25%, with neither reaching the 35% that would mark a distinct wet season. Nws Boston/norton has no dry season to plan around, though it does carry a wide 45.6°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: March averages 5.2" and July 3.2". 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 Nws Boston/norton, it arrives in quantity
49.8" of precipitation falls across only about 139 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 139 a year, 38% of all days
- Average depth per wet day
- 0.36 inches
- Most wet days
- April, about 14
- 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.
Frost Dates & Growing Season
First Fall Freeze
October 17
50% probability date
Last Spring Freeze
April 23
50% probability date
Growing Season
177 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
661
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside MA closest to Nws Boston/norton 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).
- Albia, IA 50°F · 0.0°F off
- Aledo, IL 50°F · 0.0°F off
- Centerburg, OH 50°F · 0.0°F off
- Circleville, UT 50°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (49.8" here), excluding temperature-peer places.
- Bridgehampton, NY 49.8" · 0.0" off
- Chesterfield, SC 49.8" · 0.0" off
- Old Forge, NY 49.8" · 0.0" off
- Glennville, GA 49.8" · 0.0" off
Data-derived climate profile
How Nws Boston/norton's climate pattern fits together
heating led · wet · mid swing
Nws Boston/norton's energy balance leans toward cold weather: 6,094 annual heating degree days against 661 for cooling. Its 45.6°F seasonal range still makes the monthly rows more useful than the annual average alone.
Nws Boston/norton's frost-free season lasts about 177 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 Nws Boston/norton's middle-range seasonal profile. The measured spread is 45.6°F. The annual average is 50°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Alongside its heating load, Nws Boston/norton carries 49.8 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 Nws Boston/norton'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 Nws Boston/norton, not an official NOAA class or a year-ahead forecast.
Questions about Nws Boston/norton's climate
How much rain does Nws Boston/norton get? ▼
How cold does Nws Boston/norton get in winter? ▼
How much energy does heating and cooling require in Nws Boston/norton? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Nws Boston/norton's primary station: NWS BOSTON/NORTON (USC00198368). 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 Nws Boston/norton; 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 Nws Boston/norton 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.