Westfield weather in May: Westfield, Massachusetts: normal highs, lows, rain and records for May
Westfield in May has a normal high of 72°F and a normal low of 46°F, a daily mean of 59°F, rising from 67°F on the 1st to 75°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 3.71 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 22°C and low of 8°C, 94 mm of precipitation in May.
- NOAA stationWestfield-Barnes Regional Airport
- Station IDUSW00014775
- Location42.16°N 72.72°W
- Elevation271 ft (83 m)
- From the center2 miles
- Population40,403
- Jan 35° 16°
- Feb 38° 17°
- Mar 47° 26°
- Apr 60° 35°
- May 72° 46°
- Jun 80° 55°
- Jul 85° 61°
- Aug 83° 59°
- Sep 75° 51°
- Oct 63° 39°
- Nov 51° 30°
- Dec 40° 22°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Westfield in May?
The normal high is 72°F and the normal low 46°F, for a daily mean of 58.9°F. May is 11.1°F warmer than April and 8.5°F cooler than June. May is the 5th warmest month of the year in Westfield and the 7th wettest. Across the month the normal high rises 8°F, from 67°F on May 1 to 75°F on May 31. From one year to the next May's mean temperature typically moves about 2.7°F either way (NOAA's standard deviation), so roughly two Mays in three average between 56°F and 62°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 44%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 67°F | 41°F | 39% | 24% |
| May 8 | 70°F | 44°F | 41% | 24% |
| May 15 | 72°F | 46°F | 42% | 25% |
| May 22 | 73°F | 48°F | 43% | 26% |
| May 31 | 75°F | 51°F | 44% | 27% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 67°F | 41°F | 39% | 24% | 14 h |
| May 2 | 68°F | 41°F | 40% | 24% | 14 h |
| May 3 | 68°F | 42°F | 40% | 24% | 14 h 10 min |
| May 4 | 68°F | 42°F | 40% | 24% | 14 h 10 min |
| May 5 | 69°F | 43°F | 40% | 24% | 14 h 10 min |
| May 6 | 69°F | 43°F | 40% | 24% | 14 h 10 min |
| May 7 | 69°F | 43°F | 40% | 24% | 14 h 10 min |
| May 8 | 70°F | 44°F | 41% | 24% | 14 h 20 min |
| May 9 | 70°F | 44°F | 41% | 24% | 14 h 20 min |
| May 10 | 70°F | 44°F | 41% | 24% | 14 h 20 min |
| May 11 | 71°F | 45°F | 41% | 25% | 14 h 20 min |
| May 12 | 71°F | 45°F | 41% | 25% | 14 h 30 min |
| May 13 | 71°F | 45°F | 41% | 25% | 14 h 30 min |
| May 14 | 71°F | 46°F | 42% | 25% | 14 h 30 min |
| May 15 | 72°F | 46°F | 42% | 25% | 14 h 30 min |
| May 16 | 72°F | 46°F | 42% | 26% | 14 h 30 min |
| May 17 | 72°F | 47°F | 42% | 26% | 14 h 40 min |
| May 18 | 72°F | 47°F | 43% | 26% | 14 h 40 min |
| May 19 | 73°F | 47°F | 43% | 26% | 14 h 40 min |
| May 20 | 73°F | 48°F | 43% | 26% | 14 h 40 min |
| May 21 | 73°F | 48°F | 43% | 26% | 14 h 40 min |
| May 22 | 73°F | 48°F | 43% | 26% | 14 h 50 min |
| May 23 | 73°F | 49°F | 43% | 27% | 14 h 50 min |
| May 24 | 74°F | 49°F | 44% | 27% | 14 h 50 min |
| May 25 | 74°F | 49°F | 44% | 27% | 14 h 50 min |
| May 26 | 74°F | 50°F | 44% | 27% | 14 h 50 min |
| May 27 | 74°F | 50°F | 44% | 27% | 14 h 50 min |
| May 28 | 75°F | 50°F | 44% | 27% | 15 h |
| May 29 | 75°F | 50°F | 44% | 27% | 15 h |
| May 30 | 75°F | 51°F | 44% | 27% | 15 h |
| May 31 | 75°F | 51°F | 44% | 27% | 15 h |
- Normal high
- 72°FMay average
- Normal low
- 46°FMay average
- Precipitation
- 3.71 inmonth total
- Days with precipitation
- 130.01 inch or more
- Days at 90°F or more
- 1
- Nights at 32°F or colder
- 2
- Daylight
- 14 h to 15 hMay 1 to May 31
- Days at 70°F or more
- 18
- Days at 80°F or more
- 7
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014775; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Westfield in May?
On a given May day the chance of 0.01 inch or more is 42% on average, highest around May 30 (44%). In all, 3.71 in falls on 13 days of a normal May, 1 of them with an inch or more.
In a normal May in Westfield, 1 days reach 90°F and 2 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014775.
What are the records for May in Westfield?
The warmest May temperature on Westfield's official record (since 1926) is 98°F, on May 26, 2010; the coldest is 25°F, on May 1, 2008. The wettest May brought 11.06 in (1984).
The May mean against the 1991-2020 normal of 58.9°F: 2021 58.9°F (at normal), 2022 61.9°F (+3.0), 2023 57.4°F (−1.5), 2024 62.8°F (+3.9), 2025 60.2°F (+1.3), 2026 57.7°F (−1.2). 3 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 58.9°F | at normal | 5.46 in |
| 2022 | 61.9°F | +3.0°F | 2.32 in |
| 2023 | 57.4°F | −1.5°F | 2.63 in |
| 2024 | 62.8°F | +3.9°F | 4.70 in |
| 2025 | 60.2°F | +1.3°F | 9.03 in |
| 2026 | 57.7°F | −1.2°F | 3.00 in |
Source: records: ACIS, NWS threaded record BAFthr; recent months: ACIS, station USW00014775. Records and recent months use complete months only.
How does May in Westfield compare across Massachusetts?
Across the 35 places PlainClimate covers in Massachusetts, May normal highs run from 61°F in Nantucket to 73°F in Maynard; Westfield's is 72°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.