Worcester weather in May: Worcester, Massachusetts: normal highs, lows, rain and records for May
Worcester in May has a normal high of 67°F and a normal low of 47°F, a daily mean of 57°F, rising from 63°F on the 1st to 70°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 3.56 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 8°C, 90 mm of precipitation in May.
- NOAA stationWorcester Regional Airport
- Station IDUSW00094746
- Location42.27°N 71.87°W
- Elevation1,000 ft (305 m)
- From the center3 miles
- Population211,286
- Jan 32° 17°
- Feb 35° 19°
- Mar 43° 26°
- Apr 56° 37°
- May 67° 47°
- Jun 75° 56°
- Jul 80° 62°
- Aug 78° 61°
- Sep 71° 53°
- Oct 59° 42°
- Nov 48° 33°
- Dec 38° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Worcester in May?
The normal high is 67°F and the normal low 47°F, for a daily mean of 56.7°F. May is 10.6°F warmer than April and 8.5°F cooler than June. May is the 5th warmest month of the year in Worcester and the 10th wettest. Across the month the normal high rises 7°F, from 63°F on May 1 to 70°F on May 31. From one year to the next May's mean temperature typically moves about 2.8°F either way (NOAA's standard deviation), so roughly two Mays in three average between 54°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 43%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 63°F | 42°F | 42% | 25% |
| May 8 | 65°F | 45°F | 42% | 25% |
| May 15 | 67°F | 47°F | 42% | 26% |
| May 22 | 68°F | 49°F | 42% | 25% |
| May 31 | 70°F | 51°F | 41% | 25% |
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 | 63°F | 42°F | 42% | 25% | 14 h |
| May 2 | 63°F | 43°F | 42% | 25% | 14 h |
| May 3 | 63°F | 43°F | 42% | 25% | 14 h 10 min |
| May 4 | 64°F | 43°F | 42% | 25% | 14 h 10 min |
| May 5 | 64°F | 44°F | 43% | 25% | 14 h 10 min |
| May 6 | 64°F | 44°F | 43% | 25% | 14 h 10 min |
| May 7 | 64°F | 44°F | 42% | 25% | 14 h 20 min |
| May 8 | 65°F | 45°F | 42% | 25% | 14 h 20 min |
| May 9 | 65°F | 45°F | 42% | 25% | 14 h 20 min |
| May 10 | 65°F | 45°F | 42% | 26% | 14 h 20 min |
| May 11 | 66°F | 45°F | 42% | 26% | 14 h 20 min |
| May 12 | 66°F | 46°F | 42% | 26% | 14 h 30 min |
| May 13 | 66°F | 46°F | 42% | 26% | 14 h 30 min |
| May 14 | 66°F | 46°F | 42% | 26% | 14 h 30 min |
| May 15 | 67°F | 47°F | 42% | 26% | 14 h 30 min |
| May 16 | 67°F | 47°F | 42% | 26% | 14 h 40 min |
| May 17 | 67°F | 47°F | 42% | 26% | 14 h 40 min |
| May 18 | 67°F | 47°F | 42% | 26% | 14 h 40 min |
| May 19 | 67°F | 48°F | 42% | 26% | 14 h 40 min |
| May 20 | 68°F | 48°F | 42% | 26% | 14 h 40 min |
| May 21 | 68°F | 48°F | 42% | 25% | 14 h 40 min |
| May 22 | 68°F | 49°F | 42% | 25% | 14 h 50 min |
| May 23 | 68°F | 49°F | 42% | 25% | 14 h 50 min |
| May 24 | 69°F | 49°F | 42% | 25% | 14 h 50 min |
| May 25 | 69°F | 49°F | 42% | 25% | 14 h 50 min |
| May 26 | 69°F | 50°F | 41% | 25% | 14 h 50 min |
| May 27 | 69°F | 50°F | 41% | 25% | 15 h |
| May 28 | 70°F | 50°F | 41% | 25% | 15 h |
| May 29 | 70°F | 51°F | 41% | 25% | 15 h |
| May 30 | 70°F | 51°F | 41% | 25% | 15 h |
| May 31 | 70°F | 51°F | 41% | 25% | 15 h |
- Normal high
- 67°FMay average
- Normal low
- 47°FMay average
- Precipitation
- 3.56 inmonth total
- Days with precipitation
- 130.01 inch or more
- Daylight
- 14 h to 15 hMay 1 to May 31
- Days at 70°F or more
- 11
- Days at 80°F or more
- 4
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094746; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Worcester in May?
On a given May day the chance of 0.01 inch or more is 42% on average, highest around May 5 (43%). In all, 3.56 in falls on 13 days of a normal May, 1 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094746.
What are the records for May in Worcester?
The warmest May temperature on Worcester's official record (since 1892) is 94°F, on May 26, 2010; the coldest is 27°F, on May 19, 1944. The wettest May brought 9.94 in (1984); the snowiest, 12.7 inches (1977).
The May mean against the 1991-2020 normal of 56.7°F: 2021 58.1°F (+1.4), 2022 60.4°F (+3.7), 2023 57.9°F (+1.2), 2024 60.4°F (+3.7), 2025 57.0°F (+0.3), 2026 57.0°F (+0.3). 6 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 58.1°F | +1.4°F | 5.95 in |
| 2022 | 60.4°F | +3.7°F | 2.42 in |
| 2023 | 57.9°F | +1.2°F | 2.54 in |
| 2024 | 60.4°F | +3.7°F | 8.02 in |
| 2025 | 57.0°F | +0.3°F | 8.50 in |
| 2026 | 57.0°F | +0.3°F | 4.33 in |
Source: records: ACIS, NWS threaded record ORHthr; recent months: ACIS, station USW00094746. Records and recent months use complete months only.
How does May in Worcester 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; Worcester's is 67°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.