Brookfield weather in May: Brookfield, Wisconsin: normal highs, lows, rain and records for May
Brookfield in May has a normal high of 67°F and a normal low of 47°F, a daily mean of 57°F, rising from 61°F on the 1st to 72°F by the 31st. Measurable precipitation falls on 14 days in a normal May, 3.94 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 8°C, 100 mm of precipitation in May.
- NOAA stationBrookfield Wastewater Treatment Plant
- Station IDUSC00471062
- Location43.05°N 88.18°W
- Elevation830 ft (253 m)
- From the center3 miles
- Population41,268
- Jan 28° 12°
- Feb 32° 15°
- Mar 42° 25°
- Apr 54° 35°
- May 67° 47°
- Jun 77° 56°
- Jul 81° 61°
- Aug 79° 60°
- Sep 72° 51°
- Oct 59° 40°
- Nov 45° 29°
- Dec 33° 19°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Brookfield in May?
The normal high is 67°F and the normal low 47°F, for a daily mean of 56.5°F. May is 12.0°F warmer than April and 9.8°F cooler than June. May is the 5th warmest month of the year in Brookfield and the 3rd 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 3.2°F either way (NOAA's standard deviation), so roughly two Mays in three average between 53°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 45%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 61°F | 41°F | 45% | 25% |
| May 8 | 64°F | 44°F | 44% | 25% |
| May 15 | 66°F | 46°F | 44% | 26% |
| May 22 | 69°F | 49°F | 43% | 26% |
| May 31 | 72°F | 52°F | 42% | 26% |
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 | 41°F | 45% | 25% | 14 h |
| May 2 | 61°F | 41°F | 45% | 25% | 14 h 10 min |
| May 3 | 61°F | 42°F | 45% | 25% | 14 h 10 min |
| May 4 | 62°F | 42°F | 45% | 25% | 14 h 10 min |
| May 5 | 62°F | 43°F | 45% | 25% | 14 h 10 min |
| May 6 | 63°F | 43°F | 44% | 25% | 14 h 20 min |
| May 7 | 63°F | 43°F | 44% | 25% | 14 h 20 min |
| May 8 | 64°F | 44°F | 44% | 25% | 14 h 20 min |
| May 9 | 64°F | 44°F | 44% | 25% | 14 h 20 min |
| May 10 | 64°F | 45°F | 44% | 25% | 14 h 30 min |
| May 11 | 65°F | 45°F | 44% | 25% | 14 h 30 min |
| May 12 | 65°F | 45°F | 44% | 25% | 14 h 30 min |
| May 13 | 65°F | 46°F | 44% | 26% | 14 h 30 min |
| May 14 | 66°F | 46°F | 44% | 26% | 14 h 40 min |
| May 15 | 66°F | 46°F | 44% | 26% | 14 h 40 min |
| May 16 | 67°F | 47°F | 44% | 26% | 14 h 40 min |
| May 17 | 67°F | 47°F | 43% | 26% | 14 h 40 min |
| May 18 | 67°F | 48°F | 43% | 26% | 14 h 40 min |
| May 19 | 68°F | 48°F | 43% | 26% | 14 h 50 min |
| May 20 | 68°F | 48°F | 43% | 26% | 14 h 50 min |
| May 21 | 69°F | 49°F | 43% | 26% | 14 h 50 min |
| May 22 | 69°F | 49°F | 43% | 26% | 14 h 50 min |
| May 23 | 69°F | 49°F | 43% | 26% | 14 h 50 min |
| May 24 | 70°F | 50°F | 43% | 26% | 15 h |
| May 25 | 70°F | 50°F | 43% | 26% | 15 h |
| May 26 | 70°F | 50°F | 43% | 26% | 15 h |
| May 27 | 71°F | 51°F | 43% | 26% | 15 h |
| May 28 | 71°F | 51°F | 43% | 26% | 15 h |
| May 29 | 71°F | 51°F | 42% | 26% | 15 h |
| May 30 | 72°F | 52°F | 42% | 26% | 15 h |
| May 31 | 72°F | 52°F | 42% | 26% | 15 h 10 min |
- Normal high
- 67°FMay average
- Normal low
- 47°FMay average
- Precipitation
- 3.94 inmonth total
- Days with precipitation
- 140.01 inch or more
- Nights at 32°F or colder
- 1
- Daylight
- 14 h to 15 h 10 minMay 1 to May 31
- Days at 70°F or more
- 13
- Days at 80°F or more
- 6
- Sunshine
- 71%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00471062; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Brookfield in May?
On a given May day the chance of 0.01 inch or more is 44% on average, highest around May 1 (45%). In all, 3.94 in falls on 14 days of a normal May, 1 of them with an inch or more.
In a normal May in Brookfield, 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00471062.
What are the records for May in Brookfield?
The May mean against the 1991-2020 normal of 56.5°F: 2021 56.4°F (−0.1), 2022 59.0°F (+2.5), 2024 59.9°F (+3.4), 2025 53.4°F (−3.1), 2026 55.8°F (−0.7). 2 of 5 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 56.4°F | −0.1°F | 3.33 in |
| 2022 | 59.0°F | +2.5°F | 3.19 in |
| 2024 | 59.9°F | +3.4°F | 5.87 in |
| 2025 | 53.4°F | −3.1°F | 3.76 in |
| 2026 | 55.8°F | −0.7°F | 0.52 in |
Source: recent months: ACIS, station USC00471062. Records and recent months use complete months only.
How does May in Brookfield 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; Brookfield's is 67°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.