Martinsburg weather in May: Martinsburg, West Virginia: normal highs, lows, rain and records for May
Martinsburg in May has a normal high of 74°F and a normal low of 51°F, a daily mean of 63°F, rising from 71°F on the 1st to 78°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 4.05 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 11°C, 103 mm of precipitation in May.
- NOAA stationMartinsburg Eastern West Virginia Regional Airport
- Station IDUSW00013734
- Location39.40°N 77.98°W
- Elevation534 ft (163 m)
- From the center4 miles
- Population19,047
- Jan 41° 24°
- Feb 45° 25°
- Mar 54° 32°
- Apr 65° 42°
- May 74° 51°
- Jun 82° 60°
- Jul 87° 65°
- Aug 85° 63°
- Sep 78° 55°
- Oct 67° 44°
- Nov 55° 34°
- Dec 45° 27°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Martinsburg in May?
The normal high is 74°F and the normal low 51°F, for a daily mean of 62.5°F. May is 8.9°F warmer than April and 8.6°F cooler than June. May is the 5th warmest month of the year in Martinsburg and the wettest. Across the month the normal high rises 7°F, from 71°F on May 1 to 78°F on May 31. From one year to the next May's mean temperature typically moves about 3.5°F either way (NOAA's standard deviation), so roughly two Mays in three average between 59°F and 66°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 | 71°F | 47°F | 40% | 25% |
| May 8 | 72°F | 49°F | 41% | 26% |
| May 15 | 74°F | 51°F | 42% | 26% |
| May 22 | 75°F | 53°F | 41% | 25% |
| May 31 | 78°F | 55°F | 40% | 24% |
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 | 71°F | 47°F | 40% | 25% | 13 h 50 min |
| May 2 | 71°F | 47°F | 41% | 25% | 13 h 50 min |
| May 3 | 71°F | 47°F | 41% | 25% | 13 h 50 min |
| May 4 | 71°F | 48°F | 41% | 25% | 14 h |
| May 5 | 72°F | 48°F | 41% | 25% | 14 h |
| May 6 | 72°F | 48°F | 41% | 25% | 14 h |
| May 7 | 72°F | 49°F | 41% | 26% | 14 h |
| May 8 | 72°F | 49°F | 41% | 26% | 14 h |
| May 9 | 72°F | 49°F | 42% | 26% | 14 h 10 min |
| May 10 | 73°F | 49°F | 42% | 26% | 14 h 10 min |
| May 11 | 73°F | 50°F | 42% | 26% | 14 h 10 min |
| May 12 | 73°F | 50°F | 42% | 26% | 14 h 10 min |
| May 13 | 73°F | 50°F | 42% | 26% | 14 h 10 min |
| May 14 | 74°F | 50°F | 42% | 26% | 14 h 20 min |
| May 15 | 74°F | 51°F | 42% | 26% | 14 h 20 min |
| May 16 | 74°F | 51°F | 42% | 26% | 14 h 20 min |
| May 17 | 74°F | 51°F | 42% | 26% | 14 h 20 min |
| May 18 | 74°F | 52°F | 42% | 25% | 14 h 20 min |
| May 19 | 75°F | 52°F | 41% | 25% | 14 h 30 min |
| May 20 | 75°F | 52°F | 41% | 25% | 14 h 30 min |
| May 21 | 75°F | 52°F | 41% | 25% | 14 h 30 min |
| May 22 | 75°F | 53°F | 41% | 25% | 14 h 30 min |
| May 23 | 76°F | 53°F | 41% | 25% | 14 h 30 min |
| May 24 | 76°F | 53°F | 41% | 25% | 14 h 30 min |
| May 25 | 76°F | 54°F | 41% | 25% | 14 h 40 min |
| May 26 | 76°F | 54°F | 41% | 25% | 14 h 40 min |
| May 27 | 77°F | 54°F | 41% | 25% | 14 h 40 min |
| May 28 | 77°F | 54°F | 41% | 25% | 14 h 40 min |
| May 29 | 77°F | 55°F | 40% | 24% | 14 h 40 min |
| May 30 | 77°F | 55°F | 40% | 24% | 14 h 40 min |
| May 31 | 78°F | 55°F | 40% | 24% | 14 h 40 min |
- Normal high
- 74°FMay average
- Normal low
- 51°FMay average
- Precipitation
- 4.05 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 40 minMay 1 to May 31
- Days at 70°F or more
- 21
- Days at 80°F or more
- 10
- Sunshine
- 71%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013734; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Martinsburg in May?
On a given May day the chance of 0.01 inch or more is 41% on average, highest around May 12 (42%). In all, 4.05 in falls on 13 days of a normal May, 1 of them with an inch or more.
In a normal May in Martinsburg, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013734.
How humid and windy is Martinsburg in May?
At 3 p.m. the normal temperature is 76°F with 50% relative humidity and a dew point of 56°F; at 6 a.m. it is 60°F with 86% humidity. The wind averages 5.2 mph, most often from the west in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 60°F | 55°F | 86% | 2.8 mph | 60% |
| 9 a.m. | 69°F | 57°F | 66% | 5.7 mph | 59% |
| noon | 75°F | 57°F | 54% | 7.6 mph | 49% |
| 3 p.m. | 76°F | 56°F | 50% | 8.2 mph | 51% |
| 6 p.m. | 74°F | 57°F | 55% | 6.9 mph | 57% |
| 9 p.m. | 66°F | 57°F | 74% | 3.9 mph | 61% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013734. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for May in Martinsburg?
The warmest May temperature on Martinsburg's official record (since 1891) is 100°F, on May 23, 1925; the coldest is 26°F, on May 11, 1966. The wettest May brought 9.73 in (1988).
The May mean against the 1991-2020 normal of 62.5°F: 2021 60.4°F (−2.1), 2022 63.0°F (+0.5), 2023 58.0°F (−4.5), 2024 63.9°F (+1.4), 2025 63.0°F (+0.5), 2026 62.3°F (−0.2). 3 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 60.4°F | −2.1°F | 3.25 in |
| 2022 | 63.0°F | +0.5°F | 7.21 in |
| 2023 | 58.0°F | −4.5°F | 1.19 in |
| 2024 | 63.9°F | +1.4°F | 2.32 in |
| 2025 | 63.0°F | +0.5°F | 9.33 in |
| 2026 | 62.3°F | −0.2°F | 5.65 in |
Source: records: ACIS, NWS threaded record MRBthr; recent months: ACIS, station USW00013734. Records and recent months use complete months only.
How does May in Martinsburg compare across West Virginia?
Across the 63 places PlainClimate covers in West Virginia, May normal highs run from 64°F in Davis to 79°F in Logan; Martinsburg's is 74°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.