Huntsville weather in May: Huntsville, Alabama: normal highs, lows, rain and records for May
Huntsville in May has a normal high of 83°F and a normal low of 60°F, a daily mean of 71°F, rising from 79°F on the 1st to 86°F by the 31st. Measurable precipitation falls on 10 days in a normal May, 4.67 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 16°C, 119 mm of precipitation in May.
- NOAA stationHuntsville Intnl Airport
- Station IDUSW00003856
- Location34.64°N 86.79°W
- Elevation624 ft (190 m)
- Population230,402
- Jan 52° 33°
- Feb 57° 36°
- Mar 66° 43°
- Apr 75° 51°
- May 83° 60°
- Jun 89° 68°
- Jul 92° 71°
- Aug 91° 70°
- Sep 87° 63°
- Oct 76° 52°
- Nov 64° 41°
- Dec 55° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Huntsville in May?
The normal high is 83°F and the normal low 60°F, for a daily mean of 71.3°F. May is 8.4°F warmer than April and 7.3°F cooler than June. May is the 5th warmest month of the year in Huntsville and the 6th wettest. Across the month the normal high rises 7°F, from 79°F on May 1 to 86°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 69°F and 74°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 34%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 79°F | 56°F | 34% | 22% |
| May 8 | 81°F | 58°F | 33% | 22% |
| May 15 | 82°F | 60°F | 33% | 22% |
| May 22 | 84°F | 62°F | 33% | 22% |
| May 31 | 86°F | 65°F | 33% | 22% |
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 | 79°F | 56°F | 34% | 22% | 13 h 30 min |
| May 2 | 79°F | 56°F | 34% | 22% | 13 h 30 min |
| May 3 | 79°F | 56°F | 34% | 22% | 13 h 40 min |
| May 4 | 80°F | 57°F | 33% | 22% | 13 h 40 min |
| May 5 | 80°F | 57°F | 33% | 22% | 13 h 40 min |
| May 6 | 80°F | 57°F | 33% | 22% | 13 h 40 min |
| May 7 | 80°F | 58°F | 33% | 22% | 13 h 40 min |
| May 8 | 81°F | 58°F | 33% | 22% | 13 h 50 min |
| May 9 | 81°F | 58°F | 33% | 22% | 13 h 50 min |
| May 10 | 81°F | 59°F | 33% | 22% | 13 h 50 min |
| May 11 | 81°F | 59°F | 33% | 22% | 13 h 50 min |
| May 12 | 82°F | 59°F | 33% | 22% | 13 h 50 min |
| May 13 | 82°F | 59°F | 33% | 22% | 13 h 50 min |
| May 14 | 82°F | 60°F | 33% | 22% | 14 h |
| May 15 | 82°F | 60°F | 33% | 22% | 14 h |
| May 16 | 83°F | 60°F | 33% | 22% | 14 h |
| May 17 | 83°F | 61°F | 33% | 22% | 14 h |
| May 18 | 83°F | 61°F | 33% | 22% | 14 h |
| May 19 | 83°F | 61°F | 33% | 22% | 14 h |
| May 20 | 83°F | 61°F | 33% | 22% | 14 h |
| May 21 | 84°F | 62°F | 33% | 22% | 14 h 10 min |
| May 22 | 84°F | 62°F | 33% | 22% | 14 h 10 min |
| May 23 | 84°F | 62°F | 33% | 22% | 14 h 10 min |
| May 24 | 84°F | 63°F | 33% | 22% | 14 h 10 min |
| May 25 | 85°F | 63°F | 33% | 22% | 14 h 10 min |
| May 26 | 85°F | 63°F | 33% | 22% | 14 h 10 min |
| May 27 | 85°F | 63°F | 33% | 22% | 14 h 10 min |
| May 28 | 85°F | 64°F | 33% | 22% | 14 h 10 min |
| May 29 | 86°F | 64°F | 33% | 22% | 14 h 20 min |
| May 30 | 86°F | 64°F | 33% | 22% | 14 h 20 min |
| May 31 | 86°F | 65°F | 33% | 22% | 14 h 20 min |
- Normal high
- 83°FMay average
- Normal low
- 60°FMay average
- Precipitation
- 4.67 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 4
- Daylight
- 13 h 30 min to 14 h 20 minMay 1 to May 31
- Days at 70°F or more
- 29
- Days at 80°F or more
- 20
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00003856; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Huntsville in May?
On a given May day the chance of 0.01 inch or more is 33% on average, highest around May 1 (34%). In all, 4.67 in falls on 10 days of a normal May, 1 of them with an inch or more.
In a normal May in Huntsville, 4 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00003856.
How humid and windy is Huntsville in May?
At 3 p.m. the normal temperature is 83°F with 51% relative humidity and a dew point of 63°F; at 6 a.m. it is 68°F with 86% humidity. The wind averages 6.5 mph, most often from the southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 68°F | 64°F | 86% | 4.9 mph | 41% |
| 9 a.m. | 76°F | 64°F | 67% | 7.7 mph | – |
| noon | 81°F | 63°F | 54% | 9.0 mph | 22% |
| 3 p.m. | 83°F | 63°F | 51% | 9.1 mph | – |
| 6 p.m. | 79°F | 63°F | 58% | 7.8 mph | 41% |
| 9 p.m. | 72°F | 64°F | 76% | 5.0 mph | 59% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00003856. 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 Huntsville?
The warmest May temperature on Huntsville's official record (since 1907) is 99°F, on May 30, 1914; the coldest is 32°F, on May 2, 1909. The wettest May brought 11.88 in (1983).
The May mean against the 1991-2020 normal of 71.3°F: 2021 68.0°F (−3.3), 2022 73.0°F (+1.7), 2023 70.4°F (−0.9), 2024 74.3°F (+3.0), 2025 70.5°F (−0.8), 2026 69.4°F (−1.9). 2 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 68.0°F | −3.3°F | 5.22 in |
| 2022 | 73.0°F | +1.7°F | 4.37 in |
| 2023 | 70.4°F | −0.9°F | 2.75 in |
| 2024 | 74.3°F | +3.0°F | 6.86 in |
| 2025 | 70.5°F | −0.8°F | 11.21 in |
| 2026 | 69.4°F | −1.9°F | 8.42 in |
Source: records: ACIS, NWS threaded record HSVthr; recent months: ACIS, station USW00003856. Records and recent months use complete months only.
How does May in Huntsville compare across Alabama?
Across the 80 places PlainClimate covers in Alabama, May normal highs run from 78°F in Valley Head to 88°F in Andalusia; Huntsville's is 83°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.