Mount Washington weather in May: Mount Washington, New Hampshire: normal highs, lows, rain and records for May
Mount Washington in May has a normal high of 43°F and a normal low of 30°F, a daily mean of 36°F, rising from 37°F on the 1st to 47°F by the 31st. Measurable precipitation falls on 17 days in a normal May, 7.68 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 6°C and low of −1°C, 195 mm of precipitation and 33 cm of snow in May.
- NOAA stationMount Washington
- Station IDUSW00014755
- Location44.27°N 71.30°W
- Elevation6,267 ft (1,910 m)
- Jan 15° -3°
- Feb 15° -3°
- Mar 21° 5°
- Apr 31° 17°
- May 43° 30°
- Jun 51° 40°
- Jul 55° 45°
- Aug 54° 43°
- Sep 49° 37°
- Oct 38° 25°
- Nov 28° 13°
- Dec 20° 4°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Mount Washington in May?
The normal high is 43°F and the normal low 30°F, for a daily mean of 36.3°F. May is 12.6°F warmer than April and 9.2°F cooler than June. May is the 5th warmest month of the year in Mount Washington and the 6th wettest. Across the month the normal high rises 10°F, from 37°F on May 1 to 47°F on May 31. From one year to the next May's mean temperature typically moves about 3.4°F either way (NOAA's standard deviation), so roughly two Mays in three average between 33°F and 40°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 58%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 37°F | 24°F | 57% | 41% |
| May 8 | 40°F | 27°F | 57% | 41% |
| May 15 | 42°F | 30°F | 57% | 42% |
| May 22 | 45°F | 33°F | 57% | 42% |
| May 31 | 47°F | 35°F | 58% | 43% |
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 | 37°F | 24°F | 57% | 41% | 14 h 10 min |
| May 2 | 37°F | 25°F | 57% | 41% | 14 h 10 min |
| May 3 | 38°F | 25°F | 57% | 41% | 14 h 10 min |
| May 4 | 38°F | 25°F | 57% | 41% | 14 h 20 min |
| May 5 | 39°F | 26°F | 57% | 41% | 14 h 20 min |
| May 6 | 39°F | 26°F | 57% | 41% | 14 h 20 min |
| May 7 | 39°F | 27°F | 57% | 41% | 14 h 30 min |
| May 8 | 40°F | 27°F | 57% | 41% | 14 h 30 min |
| May 9 | 40°F | 28°F | 57% | 41% | 14 h 30 min |
| May 10 | 41°F | 28°F | 57% | 41% | 14 h 30 min |
| May 11 | 41°F | 29°F | 57% | 41% | 14 h 40 min |
| May 12 | 41°F | 29°F | 57% | 42% | 14 h 40 min |
| May 13 | 42°F | 29°F | 57% | 42% | 14 h 40 min |
| May 14 | 42°F | 30°F | 57% | 42% | 14 h 40 min |
| May 15 | 42°F | 30°F | 57% | 42% | 14 h 40 min |
| May 16 | 43°F | 31°F | 57% | 42% | 14 h 50 min |
| May 17 | 43°F | 31°F | 57% | 42% | 14 h 50 min |
| May 18 | 43°F | 31°F | 57% | 42% | 14 h 50 min |
| May 19 | 44°F | 32°F | 57% | 42% | 14 h 50 min |
| May 20 | 44°F | 32°F | 57% | 42% | 15 h |
| May 21 | 44°F | 32°F | 57% | 42% | 15 h |
| May 22 | 45°F | 33°F | 57% | 42% | 15 h |
| May 23 | 45°F | 33°F | 57% | 42% | 15 h |
| May 24 | 45°F | 33°F | 57% | 42% | 15 h |
| May 25 | 46°F | 34°F | 57% | 43% | 15 h |
| May 26 | 46°F | 34°F | 57% | 43% | 15 h 10 min |
| May 27 | 46°F | 34°F | 57% | 43% | 15 h 10 min |
| May 28 | 47°F | 35°F | 58% | 43% | 15 h 10 min |
| May 29 | 47°F | 35°F | 58% | 43% | 15 h 10 min |
| May 30 | 47°F | 35°F | 58% | 43% | 15 h 10 min |
| May 31 | 47°F | 35°F | 58% | 43% | 15 h 10 min |
- Normal high
- 43°FMay average
- Normal low
- 30°FMay average
- Precipitation
- 7.68 inmonth total
- Days with precipitation
- 170.01 inch or more
- Snowfall
- 12.9 inmonth total
- Nights at 32°F or colder
- 19
- Daylight
- 14 h 10 min to 15 h 10 minMay 1 to May 31
- Sunshine
- 64%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014755; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Mount Washington in May?
On a given May day the chance of 0.01 inch or more is 57% on average, highest around May 30 (58%). In all, 7.68 in falls on 17 days of a normal May, 2 of them with an inch or more.
In a normal May in Mount Washington, 19 nights fall to freezing, 5 days stay below freezing all day and snowfall averages 12.9 inches.
Snow falls on 7 days in a normal May, and an inch or more covers the ground on 11 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014755.
What are the records for May in Mount Washington?
The warmest May temperature on this station's record (since 1948) is 66°F, on May 22, 1977; the coldest is −2°F, on May 7, 1966. The wettest May brought 19.28 in (1997); the snowiest, 95.8 inches (1997).
The May mean against the 1991-2020 normal of 36.3°F: 2021 35.7°F (−0.6), 2022 40.4°F (+4.1), 2023 34.3°F (−2.0), 2024 39.5°F (+3.2). 2 of 4 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 35.7°F | −0.6°F | 4.21 in |
| 2022 | 40.4°F | +4.1°F | 4.87 in |
| 2023 | 34.3°F | −2.0°F | 8.07 in |
| 2024 | 39.5°F | +3.2°F | 5.32 in |
Source: records: ACIS, station USW00014755; recent months: ACIS, station USW00014755. Records and recent months use complete months only.
How does May in Mount Washington compare across New Hampshire?
Across the 28 places PlainClimate covers in New Hampshire, May normal highs run from 64°F in Colebrook to 71°F in Hanover; Mount Washington's is 43°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Mount Washington in April31°F by day, 17°F at night
- Mount Washington in June51°F by day, 40°F at night
- Mount Washington through the yearEvery month, frost dates, records and recent years
- New Hampshire in MayThe statewide normal and the warmest and coolest places
- Hanover: New Hampshire's warmest Maynormal high 71°F