East Wareham, Massachusetts climate: Climate normals at a NOAA weather station
East Wareham's normal year runs from 22°F January nights to 81°F July afternoons, with 51.1 inches of precipitation and 37 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.4°C, January lows of −6°C, July highs of 27°C, 1,299 mm of precipitation a year.
- NOAA stationEast Wareham
- Station IDUSC00192451
- Location41.77°N 70.67°W
- Elevation30 ft (9 m)
On October 23, the normal high in East Wareham is 61°F and the normal low 42°F, and the chance of measurable rain or snow is 35%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for East Wareham.
- Jan 39° 22°
- Feb 41° 22°
- Mar 46° 28°
- Apr 56° 37°
- May 66° 48°
- Jun 75° 57°
- Jul 81° 64°
- Aug 80° 63°
- Sep 73° 55°
- Oct 63° 44°
- Nov 53° 35°
- Dec 44° 27°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at East Wareham each month?
July is the warmest month, with normal highs of 81°F; January the coldest, with normal lows of 22°F. The most precipitation falls in March (5.58 in), the least in July (3.08 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 39°F | 22°F | 30.3°F | 4.19 | 12.9 | 12 | <1 | 26 | 9 h 30 min |
| February | 41°F | 22°F | 31.4°F | 3.71 | 9.2 | 10 | <1 | 24 | 10 h 30 min |
| March | 46°F | 28°F | 37.3°F | 5.58 | 7.3 | 11 | <1 | 21 | 11 h 50 min |
| April | 56°F | 37°F | 46.4°F | 4.56 | 1.3 | 11 | <1 | 7 | 13 h 20 min |
| May | 66°F | 48°F | 56.6°F | 3.80 | 0.0 | 12 | <1 | <1 | 14 h 30 min |
| June | 75°F | 57°F | 65.9°F | 3.70 | 0.0 | 10 | 1 | <1 | 15 h 10 min |
| July | 81°F | 64°F | 72.5°F | 3.08 | 0.0 | 8 | 3 | <1 | 15 h |
| August | 80°F | 63°F | 71.4°F | 3.59 | 0.0 | 9 | 1 | <1 | 13 h 50 min |
| September | 73°F | 55°F | 64.1°F | 4.54 | 0.0 | 9 | <1 | <1 | 12 h 30 min |
| October | 63°F | 44°F | 53.6°F | 4.98 | 0.0 | 11 | <1 | 2 | 11 h 10 min |
| November | 53°F | 35°F | 43.9°F | 4.45 | 0.2 | 10 | <1 | 13 | 9 h 50 min |
| December | 44°F | 27°F | 35.5°F | 4.96 | 6.3 | 12 | <1 | 23 | 9 h 10 min |
| Year (annual) | 60°F | 42°F | 50.7°F | 51.14 | 37.2 | 124 | 4 | 116 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 4°C | −6°C | −0.9°C | 106 mm | 33 cm |
| February | 5°C | −5°C | −0.3°C | 94 mm | 23 cm |
| March | 8°C | −2°C | 2.9°C | 142 mm | 19 cm |
| April | 13°C | 3°C | 8.0°C | 116 mm | 3 cm |
| May | 19°C | 9°C | 13.7°C | 97 mm | 0 cm |
| June | 24°C | 14°C | 18.8°C | 94 mm | 0 cm |
| July | 27°C | 18°C | 22.5°C | 78 mm | 0 cm |
| August | 27°C | 17°C | 21.9°C | 91 mm | 0 cm |
| September | 23°C | 13°C | 17.8°C | 115 mm | 0 cm |
| October | 17°C | 7°C | 12.0°C | 126 mm | 0 cm |
| November | 12°C | 2°C | 6.6°C | 113 mm | 1 cm |
| December | 7°C | −3°C | 1.9°C | 126 mm | 16 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00192451; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at East Wareham?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, July has the fewest days with rain (8).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00192451.
When is the last frost at East Wareham?
In East Wareham, the last spring frost (32°F) comes after April 21 in half of years and after May 3 in one year in ten; the first autumn frost comes before October 24 in half of years and before October 11 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 211 year in 10 after May 3; 9 in 10 after April 7
- First autumn frost, half of years before
- October 241 year in 10 before October 11; 9 in 10 before November 7
NOAA puts the median frost-free season at 186 days, and the season without a hard freeze (28°F) at 208 days.
A hard freeze (28°F) comes after April 6 in half of springs and before November 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts East Wareham in zone 7a in ZIP code 02558, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 7a: the coldest night of a typical year reaches 2°F (22 complete years).
Frost dates for every NOAA station in Massachusetts · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00192451; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at East Wareham?
In a normal year in East Wareham, 4 days a year reach 90°F, 116 nights fall to 32°F or colder and 124 days bring measurable precipitation.
- Days at 90°F or more
- 4a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 116a normal year
- Days that stay below freezing
- 19high of 32°F or less
- Days with 0.01 inch of precipitation
- 124a normal year
- Days with 1 inch of snow or more
- 10a normal year
The highest temperature in this station's record (since 1912) is 101°F, on July 4, 2026; the lowest is −22°F, on February 9, 1934.
The wettest calendar year on that record is 1972, with 73.94 in; the snowiest season is 2004–05, with 104.2 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00192451; records: ACIS (NOAA Regional Climate Centers), station USC00192451. Records use complete months only; a month missing more than three days is left out.
How sunny is it at East Wareham?
Over a year 74% of the sunlight that would reach the ground under clear skies gets through the clouds at East Wareham, 3.9 kWh per square metre a day. August is the sunniest month (80%) and December the cloudiest (65%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 67% | 1.8 |
| February | 70% | 2.7 |
| March | 70% | 3.7 |
| April | 72% | 4.9 |
| May | 72% | 5.5 |
| June | 74% | 5.9 |
| July | 80% | 6.0 |
| August | 80% | 5.4 |
| September | 79% | 4.4 |
| October | 72% | 3.0 |
| November | 70% | 2.0 |
| December | 65% | 1.5 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does East Wareham record?
A normal year at East Wareham brings 5,772 heating degree days, 7% more than the median U.S. place (5,373), and 608 cooling degree days, 33% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,713 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,076 | 0 |
| February | 941 | 0 |
| March | 859 | 0 |
| April | 560 | 0 |
| May | 269 | 9 |
| June | 59 | 86 |
| July | 4 | 237 |
| August | 7 | 204 |
| September | 94 | 67 |
| October | 359 | 5 |
| November | 632 | 0 |
| December | 913 | 0 |
| Year (annual) | 5,772 | 608 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00192451. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at East Wareham been warmer than normal?
2025 averaged 50.8°F, 0.1°F above the 1991-2020 normal of 50.7°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 52.3°F | +1.6°F | 55.79 | 18.0 |
| 2022 | 52.0°F | +1.3°F | 47.79 | 35.5 |
| 2023 | 52.9°F | +2.2°F | 49.39 | 9.5 |
| 2024 | 52.1°F | +1.4°F | 55.78 | 13.0 |
| 2025 | 50.8°F | +0.1°F | 51.06 | 21.0 |
Over 81 complete years from 1928 to 2025, the station's annual mean temperature rose at a fitted 3.5°F per century (+0.20°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00192451; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does East Wareham's climate compare?
East Wareham is warmer than 26 of the 35 places with their own NOAA record in Massachusetts, and wetter than 31. Across the 7,247 U.S. stations with normals, its annual mean of 50.7°F is warmer than 44%.
In the Köppen classification computed from these normals, East Wareham is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near East Wareham share this climate record?
10 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Monument Beach, MA3,067 people · 5 mi SE
- Buzzards Bay, MA2,941 people · 3 mi E
- West Wareham, MA2,776 people · 5 mi W
- Wareham Center, MA2,737 people · 3 mi SW
- Pocasset, MA2,375 people · 6 mi S
- White Island Shores, MA1,880 people · 3 mi NE
- Bourne, MA20,508 people · 4 mi SE
- Onset, MA1,561 people · 1 mi S
- Weweantic, MA1,384 people · 4 mi W
- Marion Center, MA1,159 people · 6 mi SW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about East Wareham's climate
What is the coldest month at East Wareham?
January, with a normal high of 39°F and a normal low of 22°F. The warmest is July (81°F by day, 64°F at night).
Does it snow at East Wareham?
Yes: 37 inches in a normal year, falling on 15 days with 0.1 inch or more, the most in January (12.9 inches).
What is the rainiest month at East Wareham?
March, with 5.58 in of precipitation in a normal year; the driest is July with 3.08 in.
What plant hardiness zone is East Wareham in?
The USDA's 2023 map puts East Wareham in zone 7a in ZIP code 02558, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 2°F (22 years, 1991-2020): zone 7a.
How late can frost come at East Wareham?
In half of years the last 32°F night comes after April 21; in one year in ten it comes after May 3. Waiting until May 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Massachusetts climateThe statewide normals and every place in the state
- Plymouth, MA11 miles from this station, 50.0°F a year
- East Sandwich, MA11 miles from this station, 49.5°F a year
- Rochester, MA13 miles from this station, 50.5°F a year
- Middleboro, MA15 miles from this station, 49.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made