Milwaukee weather in May: Milwaukee, Wisconsin: normal highs, lows, rain and records for May
Milwaukee in May has a normal high of 67°F and a normal low of 48°F, a daily mean of 57°F, rising from 61°F on the 1st to 72°F by the 31st. Measurable precipitation falls on 12 days in a normal May, 3.54 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 9°C, 90 mm of precipitation in May.
- NOAA stationMilwaukee Mitchell Airport
- Station IDUSW00014839
- Location42.95°N 87.90°W
- Elevation670 ft (204 m)
- From the center8 miles
- Population563,531
- Jan 31° 17°
- Feb 34° 20°
- Mar 44° 29°
- Apr 55° 38°
- May 67° 48°
- Jun 77° 58°
- Jul 82° 65°
- Aug 80° 64°
- Sep 74° 56°
- Oct 61° 45°
- Nov 48° 33°
- Dec 36° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Milwaukee in May?
The normal high is 67°F and the normal low 48°F, for a daily mean of 57.1°F. May is 10.8°F warmer than April and 10.5°F cooler than June. May is the 5th warmest month of the year in Milwaukee and the 4th wettest. Across the month the normal high rises 11°F, from 61°F on May 1 to 72°F on May 31. From one year to the next May's mean temperature typically moves about 3.0°F either way (NOAA's standard deviation), so roughly two Mays in three average between 54°F and 60°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 39%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 61°F | 43°F | 39% | 24% |
| May 8 | 64°F | 45°F | 39% | 24% |
| May 15 | 66°F | 47°F | 39% | 24% |
| May 22 | 69°F | 50°F | 39% | 24% |
| May 31 | 72°F | 53°F | 39% | 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 | 61°F | 43°F | 39% | 24% | 14 h |
| May 2 | 61°F | 43°F | 39% | 24% | 14 h 10 min |
| May 3 | 62°F | 44°F | 39% | 24% | 14 h 10 min |
| May 4 | 62°F | 44°F | 39% | 24% | 14 h 10 min |
| May 5 | 62°F | 44°F | 39% | 24% | 14 h 10 min |
| May 6 | 63°F | 45°F | 39% | 24% | 14 h 20 min |
| May 7 | 63°F | 45°F | 39% | 24% | 14 h 20 min |
| May 8 | 64°F | 45°F | 39% | 24% | 14 h 20 min |
| May 9 | 64°F | 46°F | 39% | 24% | 14 h 20 min |
| May 10 | 64°F | 46°F | 39% | 24% | 14 h 30 min |
| May 11 | 65°F | 46°F | 39% | 24% | 14 h 30 min |
| May 12 | 65°F | 46°F | 39% | 24% | 14 h 30 min |
| May 13 | 66°F | 47°F | 39% | 24% | 14 h 30 min |
| May 14 | 66°F | 47°F | 39% | 24% | 14 h 30 min |
| May 15 | 66°F | 47°F | 39% | 24% | 14 h 40 min |
| May 16 | 67°F | 48°F | 39% | 24% | 14 h 40 min |
| May 17 | 67°F | 48°F | 39% | 24% | 14 h 40 min |
| May 18 | 67°F | 48°F | 39% | 24% | 14 h 40 min |
| May 19 | 68°F | 49°F | 39% | 24% | 14 h 50 min |
| May 20 | 68°F | 49°F | 39% | 24% | 14 h 50 min |
| May 21 | 68°F | 49°F | 39% | 24% | 14 h 50 min |
| May 22 | 69°F | 50°F | 39% | 24% | 14 h 50 min |
| May 23 | 69°F | 50°F | 39% | 24% | 14 h 50 min |
| May 24 | 70°F | 50°F | 39% | 24% | 14 h 50 min |
| May 25 | 70°F | 51°F | 39% | 24% | 15 h |
| May 26 | 70°F | 51°F | 39% | 24% | 15 h |
| May 27 | 71°F | 52°F | 39% | 24% | 15 h |
| May 28 | 71°F | 52°F | 39% | 24% | 15 h |
| May 29 | 71°F | 52°F | 39% | 24% | 15 h |
| May 30 | 72°F | 53°F | 39% | 24% | 15 h |
| May 31 | 72°F | 53°F | 39% | 24% | 15 h 10 min |
- Normal high
- 67°FMay average
- Normal low
- 48°FMay average
- Precipitation
- 3.54 inmonth total
- Days with precipitation
- 120.01 inch or more
- Daylight
- 14 h to 15 h 10 minMay 1 to May 31
- Days at 70°F or more
- 11
- Days at 80°F or more
- 5
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014839; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Milwaukee in May?
On a given May day the chance of 0.01 inch or more is 39% on average, highest around May 1 (39%). In all, 3.54 in falls on 12 days of a normal May, 1 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014839.
How humid and windy is Milwaukee in May?
At 3 p.m. the normal temperature is 67°F with 57% relative humidity and a dew point of 51°F; at 6 a.m. it is 58°F with 76% humidity. The wind averages 9.1 mph, most often from the east in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 58°F | 50°F | 76% | 7.5 mph | 28% |
| 9 a.m. | 64°F | 51°F | 64% | 10.8 mph | – |
| noon | 66°F | 52°F | 59% | 12.0 mph | 19% |
| 3 p.m. | 67°F | 51°F | 57% | 12.3 mph | 25% |
| 6 p.m. | 64°F | 50°F | 60% | 10.1 mph | 24% |
| 9 p.m. | 59°F | 49°F | 69% | 6.6 mph | 38% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014839. 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 Milwaukee?
The warmest May temperature on Milwaukee's official record (since 1871) is 95°F, on May 27, 2018; the coldest is 21°F, on May 10, 1966. The wettest May brought 9.56 in (1933); the snowiest, 3.2 inches (1935).
The May mean against the 1991-2020 normal of 57.1°F: 2021 58.5°F (+1.4), 2022 59.9°F (+2.8), 2023 57.7°F (+0.6), 2024 60.2°F (+3.1), 2025 52.5°F (−4.6), 2026 55.3°F (−1.8). 4 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 58.5°F | +1.4°F | 2.38 in |
| 2022 | 59.9°F | +2.8°F | 2.96 in |
| 2023 | 57.7°F | +0.6°F | 0.88 in |
| 2024 | 60.2°F | +3.1°F | 6.52 in |
| 2025 | 52.5°F | −4.6°F | 4.36 in |
| 2026 | 55.3°F | −1.8°F | 0.36 in |
Source: records: ACIS, NWS threaded record MKEthr; recent months: ACIS, station USW00014839. Records and recent months use complete months only.
How does May in Milwaukee compare across Wisconsin?
Across the 165 places PlainClimate covers in Wisconsin, May normal highs run from 57°F in Superior to 73°F in Mondovi; Milwaukee's is 67°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.