New Brunswick weather in May: New Brunswick, New Jersey: normal highs, lows, rain and records for May
New Brunswick in May has a normal high of 72°F and a normal low of 51°F, a daily mean of 61°F, rising from 68°F on the 1st to 76°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 4.03 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 22°C and low of 10°C, 102 mm of precipitation in May.
- NOAA stationNew Brunswick (3 mi SE)
- Station IDUSC00286055
- Location40.47°N 74.42°W
- Elevation111 ft (34 m)
- From the center1 miles
- Population57,487
- Jan 40° 23°
- Feb 43° 24°
- Mar 51° 31°
- Apr 63° 41°
- May 72° 51°
- Jun 81° 60°
- Jul 87° 66°
- Aug 85° 64°
- Sep 78° 57°
- Oct 67° 44°
- Nov 56° 35°
- Dec 45° 28°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is New Brunswick in May?
The normal high is 72°F and the normal low 51°F, for a daily mean of 61.3°F. May is 9.6°F warmer than April and 9.5°F cooler than June. May is the 5th warmest month of the year in New Brunswick and the 8th wettest. Across the month the normal high rises 8°F, from 68°F on May 1 to 76°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 59°F and 64°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 41%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 68°F | 46°F | 40% | 23% |
| May 8 | 70°F | 48°F | 40% | 25% |
| May 15 | 72°F | 50°F | 41% | 26% |
| May 22 | 74°F | 52°F | 41% | 26% |
| May 31 | 76°F | 55°F | 40% | 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 | 68°F | 46°F | 40% | 23% | 13 h 50 min |
| May 2 | 69°F | 46°F | 40% | 24% | 14 h |
| May 3 | 69°F | 47°F | 40% | 24% | 14 h |
| May 4 | 69°F | 47°F | 40% | 24% | 14 h |
| May 5 | 69°F | 47°F | 40% | 24% | 14 h |
| May 6 | 70°F | 48°F | 40% | 24% | 14 h 10 min |
| May 7 | 70°F | 48°F | 40% | 24% | 14 h 10 min |
| May 8 | 70°F | 48°F | 40% | 25% | 14 h 10 min |
| May 9 | 70°F | 48°F | 40% | 25% | 14 h 10 min |
| May 10 | 71°F | 49°F | 40% | 25% | 14 h 10 min |
| May 11 | 71°F | 49°F | 40% | 25% | 14 h 20 min |
| May 12 | 71°F | 49°F | 41% | 25% | 14 h 20 min |
| May 13 | 71°F | 50°F | 41% | 25% | 14 h 20 min |
| May 14 | 72°F | 50°F | 41% | 26% | 14 h 20 min |
| May 15 | 72°F | 50°F | 41% | 26% | 14 h 20 min |
| May 16 | 72°F | 51°F | 41% | 26% | 14 h 30 min |
| May 17 | 72°F | 51°F | 41% | 26% | 14 h 30 min |
| May 18 | 73°F | 51°F | 41% | 26% | 14 h 30 min |
| May 19 | 73°F | 52°F | 41% | 26% | 14 h 30 min |
| May 20 | 73°F | 52°F | 41% | 26% | 14 h 30 min |
| May 21 | 73°F | 52°F | 41% | 26% | 14 h 30 min |
| May 22 | 74°F | 52°F | 41% | 26% | 14 h 40 min |
| May 23 | 74°F | 53°F | 41% | 27% | 14 h 40 min |
| May 24 | 74°F | 53°F | 41% | 27% | 14 h 40 min |
| May 25 | 74°F | 53°F | 41% | 27% | 14 h 40 min |
| May 26 | 75°F | 54°F | 41% | 27% | 14 h 40 min |
| May 27 | 75°F | 54°F | 41% | 27% | 14 h 40 min |
| May 28 | 75°F | 54°F | 41% | 27% | 14 h 50 min |
| May 29 | 76°F | 55°F | 40% | 27% | 14 h 50 min |
| May 30 | 76°F | 55°F | 40% | 27% | 14 h 50 min |
| May 31 | 76°F | 55°F | 40% | 27% | 14 h 50 min |
- Normal high
- 72°FMay average
- Normal low
- 51°FMay average
- Precipitation
- 4.03 inmonth total
- Days with precipitation
- 130.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h 50 min to 14 h 50 minMay 1 to May 31
- Days at 70°F or more
- 18
- Days at 80°F or more
- 7
- Sunshine
- 70%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00286055; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in New Brunswick in May?
On a given May day the chance of 0.01 inch or more is 40% on average, highest around May 18 (41%). In all, 4.03 in falls on 13 days of a normal May, 1 of them with an inch or more.
In a normal May in New Brunswick, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00286055.
What are the records for May in New Brunswick?
The warmest May temperature on New Brunswick's official record (since 1893) is 99°F, on May 31, 1895; the coldest is 28°F, on May 12, 1907. The wettest May brought 9.38 in (1984).
The May mean against the 1991-2020 normal of 61.3°F: 2021 61.0°F (−0.3), 2022 63.1°F (+1.8), 2023 59.5°F (−1.8), 2024 64.2°F (+2.9), 2025 62.6°F (+1.3), 2026 63.2°F (+1.9). 4 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 61.0°F | −0.3°F | 4.17 in |
| 2022 | 63.1°F | +1.8°F | 7.43 in |
| 2023 | 59.5°F | −1.8°F | 2.41 in |
| 2024 | 64.2°F | +2.9°F | 3.80 in |
| 2025 | 62.6°F | +1.3°F | 7.15 in |
| 2026 | 63.2°F | +1.9°F | 3.35 in |
Source: records: ACIS, NWS threaded record NBRN4thr; recent months: ACIS, station USC00286055. Records and recent months use complete months only.
How does May in New Brunswick compare across New Jersey?
Across the 33 places PlainClimate covers in New Jersey, May normal highs run from 68°F in Long Branch to 76°F in Belleplain; New Brunswick's is 72°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.