Greenfield weather in May: Greenfield, Massachusetts: normal highs, lows, rain and records for May
Greenfield in May has a normal high of 70°F and a normal low of 45°F, a daily mean of 57°F, rising from 65°F on the 1st to 74°F by the 31st. Measurable precipitation falls on 14 days in a normal May, 3.98 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 7°C, 101 mm of precipitation in May.
- NOAA stationGreenfield #3
- Station IDUSC00193229
- Location42.57°N 72.60°W
- Elevation130 ft (40 m)
- From the center3 miles
- Population17,633
- Jan 33° 15°
- Feb 37° 14°
- Mar 45° 23°
- Apr 59° 34°
- May 70° 45°
- Jun 78° 54°
- Jul 83° 59°
- Aug 81° 57°
- Sep 74° 50°
- Oct 62° 39°
- Nov 50° 29°
- Dec 40° 21°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Greenfield in May?
The normal high is 70°F and the normal low 45°F, for a daily mean of 57.4°F. May is 11.0°F warmer than April and 8.6°F cooler than June. May is the 5th warmest month of the year in Greenfield and the 7th wettest. Across the month the normal high rises 9°F, from 65°F on May 1 to 74°F on May 31. From one year to the next May's mean temperature typically moves about 2.9°F either way (NOAA's standard deviation), so roughly two Mays in three average between 55°F and 60°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 46%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 65°F | 40°F | 45% | 25% |
| May 8 | 68°F | 43°F | 45% | 25% |
| May 15 | 69°F | 45°F | 46% | 26% |
| May 22 | 71°F | 47°F | 45% | 26% |
| May 31 | 74°F | 50°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 | 65°F | 40°F | 45% | 25% | 14 h |
| May 2 | 66°F | 40°F | 45% | 25% | 14 h |
| May 3 | 66°F | 41°F | 45% | 25% | 14 h 10 min |
| May 4 | 66°F | 41°F | 45% | 25% | 14 h 10 min |
| May 5 | 67°F | 41°F | 45% | 25% | 14 h 10 min |
| May 6 | 67°F | 42°F | 45% | 25% | 14 h 10 min |
| May 7 | 67°F | 42°F | 45% | 25% | 14 h 20 min |
| May 8 | 68°F | 43°F | 45% | 25% | 14 h 20 min |
| May 9 | 68°F | 43°F | 45% | 25% | 14 h 20 min |
| May 10 | 68°F | 43°F | 45% | 25% | 14 h 20 min |
| May 11 | 68°F | 44°F | 45% | 25% | 14 h 30 min |
| May 12 | 69°F | 44°F | 45% | 25% | 14 h 30 min |
| May 13 | 69°F | 44°F | 45% | 25% | 14 h 30 min |
| May 14 | 69°F | 45°F | 45% | 26% | 14 h 30 min |
| May 15 | 69°F | 45°F | 46% | 26% | 14 h 30 min |
| May 16 | 70°F | 45°F | 46% | 26% | 14 h 40 min |
| May 17 | 70°F | 46°F | 46% | 26% | 14 h 40 min |
| May 18 | 70°F | 46°F | 46% | 26% | 14 h 40 min |
| May 19 | 70°F | 46°F | 46% | 26% | 14 h 40 min |
| May 20 | 71°F | 47°F | 46% | 26% | 14 h 40 min |
| May 21 | 71°F | 47°F | 45% | 26% | 14 h 50 min |
| May 22 | 71°F | 47°F | 45% | 26% | 14 h 50 min |
| May 23 | 71°F | 48°F | 45% | 27% | 14 h 50 min |
| May 24 | 72°F | 48°F | 45% | 27% | 14 h 50 min |
| May 25 | 72°F | 48°F | 45% | 27% | 14 h 50 min |
| May 26 | 72°F | 49°F | 45% | 27% | 15 h |
| May 27 | 73°F | 49°F | 45% | 27% | 15 h |
| May 28 | 73°F | 49°F | 45% | 27% | 15 h |
| May 29 | 73°F | 49°F | 44% | 27% | 15 h |
| May 30 | 73°F | 50°F | 44% | 27% | 15 h |
| May 31 | 74°F | 50°F | 44% | 27% | 15 h |
- Normal high
- 70°FMay average
- Normal low
- 45°FMay average
- Precipitation
- 3.98 inmonth total
- Days with precipitation
- 140.01 inch or more
- Days at 90°F or more
- 1
- Nights at 32°F or colder
- 1
- Daylight
- 14 h to 15 hMay 1 to May 31
- Days at 70°F or more
- 17
- Days at 80°F or more
- 7
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00193229; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Greenfield in May?
On a given May day the chance of 0.01 inch or more is 45% on average, highest around May 16 (46%). In all, 3.98 in falls on 14 days of a normal May, 1 of them with an inch or more.
In a normal May in Greenfield, 1 days reach 90°F and 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00193229.
What are the records for May in Greenfield?
The May mean against the 1991-2020 normal of 57.4°F: 2021 57.8°F (+0.4), 2022 59.8°F (+2.4), 2023 55.9°F (−1.5), 2024 61.7°F (+4.3), 2025 58.7°F (+1.3), 2026 56.2°F (−1.2). 4 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 57.8°F | +0.4°F | 4.09 in |
| 2022 | 59.8°F | +2.4°F | 2.55 in |
| 2023 | 55.9°F | −1.5°F | 3.86 in |
| 2024 | 61.7°F | +4.3°F | 4.34 in |
| 2025 | 58.7°F | +1.3°F | 9.04 in |
| 2026 | 56.2°F | −1.2°F | 4.61 in |
Source: recent months: ACIS, station USC00193229. Records and recent months use complete months only.
How does May in Greenfield 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; Greenfield's is 70°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.