Brockton weather in May: Brockton, Massachusetts: normal highs, lows, rain and records for May
Brockton in May has a normal high of 70°F and a normal low of 47°F, a daily mean of 59°F, rising from 65°F on the 1st to 74°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 3.44 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 9°C, 87 mm of precipitation in May.
- NOAA stationBrockton
- Station IDUSC00190860
- Location42.05°N 71.01°W
- Elevation75 ft (23 m)
- From the center3 miles
- Population105,788
- Jan 39° 21°
- Feb 41° 22°
- Mar 48° 29°
- Apr 59° 38°
- May 70° 47°
- Jun 78° 57°
- Jul 84° 63°
- Aug 83° 62°
- Sep 75° 54°
- Oct 64° 43°
- Nov 54° 34°
- Dec 44° 26°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Brockton in May?
The normal high is 70°F and the normal low 47°F, for a daily mean of 58.5°F. May is 10.0°F warmer than April and 9.2°F cooler than June. May is the 5th warmest month of the year in Brockton and the 11th 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 2.5°F either way (NOAA's standard deviation), so roughly two Mays in three average between 56°F and 61°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 42%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 65°F | 43°F | 42% | 24% |
| May 8 | 68°F | 45°F | 42% | 24% |
| May 15 | 70°F | 47°F | 41% | 24% |
| May 22 | 71°F | 49°F | 41% | 24% |
| May 31 | 74°F | 52°F | 40% | 23% |
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 | 43°F | 42% | 24% | 14 h |
| May 2 | 66°F | 43°F | 42% | 24% | 14 h |
| May 3 | 66°F | 44°F | 42% | 24% | 14 h |
| May 4 | 66°F | 44°F | 42% | 24% | 14 h 10 min |
| May 5 | 67°F | 44°F | 42% | 24% | 14 h 10 min |
| May 6 | 67°F | 45°F | 42% | 24% | 14 h 10 min |
| May 7 | 67°F | 45°F | 42% | 24% | 14 h 10 min |
| May 8 | 68°F | 45°F | 42% | 24% | 14 h 20 min |
| May 9 | 68°F | 45°F | 42% | 24% | 14 h 20 min |
| May 10 | 68°F | 46°F | 42% | 24% | 14 h 20 min |
| May 11 | 68°F | 46°F | 42% | 24% | 14 h 20 min |
| May 12 | 69°F | 46°F | 42% | 24% | 14 h 30 min |
| May 13 | 69°F | 47°F | 42% | 24% | 14 h 30 min |
| May 14 | 69°F | 47°F | 42% | 24% | 14 h 30 min |
| May 15 | 70°F | 47°F | 41% | 24% | 14 h 30 min |
| May 16 | 70°F | 47°F | 41% | 24% | 14 h 30 min |
| May 17 | 70°F | 48°F | 41% | 24% | 14 h 40 min |
| May 18 | 70°F | 48°F | 41% | 24% | 14 h 40 min |
| May 19 | 71°F | 48°F | 41% | 24% | 14 h 40 min |
| May 20 | 71°F | 49°F | 41% | 24% | 14 h 40 min |
| May 21 | 71°F | 49°F | 41% | 24% | 14 h 40 min |
| May 22 | 71°F | 49°F | 41% | 24% | 14 h 50 min |
| May 23 | 72°F | 49°F | 41% | 23% | 14 h 50 min |
| May 24 | 72°F | 50°F | 41% | 23% | 14 h 50 min |
| May 25 | 72°F | 50°F | 40% | 23% | 14 h 50 min |
| May 26 | 72°F | 50°F | 40% | 23% | 14 h 50 min |
| May 27 | 73°F | 51°F | 40% | 23% | 14 h 50 min |
| May 28 | 73°F | 51°F | 40% | 23% | 15 h |
| May 29 | 73°F | 51°F | 40% | 23% | 15 h |
| May 30 | 74°F | 52°F | 40% | 23% | 15 h |
| May 31 | 74°F | 52°F | 40% | 23% | 15 h |
- Normal high
- 70°FMay average
- Normal low
- 47°FMay average
- Precipitation
- 3.44 inmonth total
- Days with precipitation
- 130.01 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
- 16
- Days at 80°F or more
- 6
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00190860; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Brockton in May?
On a given May day the chance of 0.01 inch or more is 41% on average, highest around May 3 (42%). In all, 3.44 in falls on 13 days of a normal May, 1 of them with an inch or more.
In a normal May in Brockton, 1 days reach 90°F and 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00190860.
What are the records for May in Brockton?
The warmest May temperature on this station's record (since 1894) is 97°F, on May 29, 1931; the coldest is 25°F, on May 9, 1956. The wettest May brought 9.04 in (1954); the snowiest, 3.0 inches (1917).
The May mean against the 1991-2020 normal of 58.5°F: 2021 61.2°F (+2.7), 2022 63.8°F (+5.3), 2023 60.0°F (+1.5), 2024 62.0°F (+3.5), 2025 62.1°F (+3.6), 2026 61.8°F (+3.3). 6 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 61.2°F | +2.7°F | 4.24 in |
| 2022 | 63.8°F | +5.3°F | 1.25 in |
| 2023 | 60.0°F | +1.5°F | 1.26 in |
| 2024 | 62.0°F | +3.5°F | 7.32 in |
| 2025 | 62.1°F | +3.6°F | 6.71 in |
| 2026 | 61.8°F | +3.3°F | 2.44 in |
Source: records: ACIS, station USC00190860; recent months: ACIS, station USC00190860. Records and recent months use complete months only.
How does May in Brockton 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; Brockton's is 70°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.