St. Paul weather in May: St. Paul, Minnesota: normal highs, lows, rain and records for May
St. Paul in May has a normal high of 69°F and a normal low of 49°F, a daily mean of 59°F, rising from 64°F on the 1st to 74°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 3.97 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 9°C, 101 mm of precipitation in May.
- NOAA stationSt Paul Downtown Airport
- Station IDUSW00014927
- Location44.93°N 93.06°W
- Elevation700 ft (213 m)
- From the center3 miles
- Population307,465
- Jan 24° 9°
- Feb 29° 13°
- Mar 42° 25°
- Apr 57° 37°
- May 69° 49°
- Jun 79° 59°
- Jul 83° 64°
- Aug 80° 62°
- Sep 72° 53°
- Oct 58° 40°
- Nov 42° 27°
- Dec 29° 15°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is St. Paul in May?
The normal high is 69°F and the normal low 49°F, for a daily mean of 58.9°F. May is 11.9°F warmer than April and 9.9°F cooler than June. May is the 5th warmest month of the year in St. Paul and the 3rd wettest. Across the month the normal high rises 10°F, from 64°F on May 1 to 74°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 56°F and 62°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 43%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 64°F | 43°F | 39% | 24% |
| May 8 | 66°F | 46°F | 40% | 25% |
| May 15 | 69°F | 49°F | 41% | 25% |
| May 22 | 71°F | 51°F | 42% | 25% |
| May 31 | 74°F | 54°F | 43% | 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 | 64°F | 43°F | 39% | 24% | 14 h 10 min |
| May 2 | 64°F | 44°F | 39% | 24% | 14 h 20 min |
| May 3 | 64°F | 44°F | 39% | 24% | 14 h 20 min |
| May 4 | 65°F | 45°F | 39% | 25% | 14 h 20 min |
| May 5 | 65°F | 45°F | 39% | 25% | 14 h 20 min |
| May 6 | 65°F | 45°F | 40% | 25% | 14 h 30 min |
| May 7 | 66°F | 46°F | 40% | 25% | 14 h 30 min |
| May 8 | 66°F | 46°F | 40% | 25% | 14 h 30 min |
| May 9 | 67°F | 46°F | 40% | 25% | 14 h 30 min |
| May 10 | 67°F | 47°F | 40% | 25% | 14 h 40 min |
| May 11 | 67°F | 47°F | 40% | 25% | 14 h 40 min |
| May 12 | 68°F | 48°F | 40% | 25% | 14 h 40 min |
| May 13 | 68°F | 48°F | 40% | 25% | 14 h 40 min |
| May 14 | 68°F | 48°F | 41% | 25% | 14 h 50 min |
| May 15 | 69°F | 49°F | 41% | 25% | 14 h 50 min |
| May 16 | 69°F | 49°F | 41% | 25% | 14 h 50 min |
| May 17 | 69°F | 49°F | 41% | 25% | 14 h 50 min |
| May 18 | 70°F | 50°F | 41% | 25% | 14 h 50 min |
| May 19 | 70°F | 50°F | 41% | 25% | 15 h |
| May 20 | 70°F | 50°F | 41% | 25% | 15 h |
| May 21 | 71°F | 51°F | 41% | 25% | 15 h |
| May 22 | 71°F | 51°F | 42% | 25% | 15 h |
| May 23 | 71°F | 52°F | 42% | 25% | 15 h 10 min |
| May 24 | 72°F | 52°F | 42% | 26% | 15 h 10 min |
| May 25 | 72°F | 52°F | 42% | 26% | 15 h 10 min |
| May 26 | 72°F | 53°F | 42% | 26% | 15 h 10 min |
| May 27 | 73°F | 53°F | 43% | 26% | 15 h 10 min |
| May 28 | 73°F | 53°F | 43% | 26% | 15 h 10 min |
| May 29 | 73°F | 54°F | 43% | 26% | 15 h 20 min |
| May 30 | 74°F | 54°F | 43% | 26% | 15 h 20 min |
| May 31 | 74°F | 54°F | 43% | 26% | 15 h 20 min |
- Normal high
- 69°FMay average
- Normal low
- 49°FMay average
- Precipitation
- 3.97 inmonth total
- Days with precipitation
- 130.01 inch or more
- Days at 90°F or more
- 1
- Nights at 32°F or colder
- 1
- Daylight
- 14 h 10 min to 15 h 20 minMay 1 to May 31
- Days at 70°F or more
- 16
- Days at 80°F or more
- 5
- Sunshine
- 69%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014927; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in St. Paul in May?
On a given May day the chance of 0.01 inch or more is 41% on average, highest around May 31 (43%). In all, 3.97 in falls on 13 days of a normal May, 1 of them with an inch or more.
In a normal May in St. Paul, 1 days reach 90°F and 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014927.
How humid and windy is St. Paul in May?
At 3 p.m. the normal temperature is 72°F with 48% relative humidity and a dew point of 51°F; at 6 a.m. it is 58°F with 79% humidity. The wind averages 7.6 mph, most often from the southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 58°F | 51°F | 79% | 5.4 mph | 59% |
| 9 a.m. | 65°F | 52°F | 62% | 8.5 mph | 59% |
| noon | 70°F | 52°F | 51% | 10.2 mph | 50% |
| 3 p.m. | 72°F | 51°F | 48% | 10.4 mph | 49% |
| 6 p.m. | 71°F | 51°F | 50% | 9.3 mph | 51% |
| 9 p.m. | 64°F | 52°F | 65% | 5.8 mph | 56% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014927. 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 St. Paul?
The warmest May temperature on this station's record (since 1872) is 99°F, on May 28, 2018; the coldest is 23°F, on May 3, 1907. The wettest May brought 10.40 in (1906); the snowiest, 2.0 inches (1890).
The May mean against the 1991-2020 normal of 58.9°F: 2021 59.7°F (+0.8), 2022 60.6°F (+1.7), 2023 63.4°F (+4.5), 2024 61.8°F (+2.9), 2025 60.4°F (+1.5), 2026 59.3°F (+0.4). 6 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 59.7°F | +0.8°F | 2.52 in |
| 2022 | 60.6°F | +1.7°F | 3.56 in |
| 2023 | 63.4°F | +4.5°F | 1.80 in |
| 2024 | 61.8°F | +2.9°F | 6.01 in |
| 2025 | 60.4°F | +1.5°F | 3.59 in |
| 2026 | 59.3°F | +0.4°F | 1.72 in |
Source: records: ACIS, station USW00014927; recent months: ACIS, station USW00014927. Records and recent months use complete months only.
How does May in St. Paul compare across Minnesota?
Across the 129 places PlainClimate covers in Minnesota, May normal highs run from 55°F in Grand Marais to 73°F in Amboy; St. Paul's is 69°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.