Rochester weather in May: Rochester, Minnesota: normal highs, lows, rain and records for May
Rochester in May has a normal high of 68°F and a normal low of 47°F, a daily mean of 58°F, rising from 62°F on the 1st to 74°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 4.35 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 20°C and low of 8°C, 110 mm of precipitation and 1 cm of snow in May.
- NOAA stationRochester International Airport
- Station IDUSW00014925
- Location43.90°N 92.49°W
- Elevation1,304 ft (398 m)
- Population123,624
- Jan 23° 7°
- Feb 27° 11°
- Mar 40° 23°
- Apr 55° 35°
- May 68° 47°
- Jun 78° 58°
- Jul 80° 61°
- Aug 78° 58°
- Sep 72° 50°
- Oct 58° 38°
- Nov 42° 26°
- Dec 28° 14°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Rochester in May?
The normal high is 68°F and the normal low 47°F, for a daily mean of 57.6°F. May is 12.4°F warmer than April and 9.9°F cooler than June. May is the 5th warmest month of the year in Rochester and the 2nd wettest. Across the month the normal high rises 12°F, from 62°F on May 1 to 74°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 55°F and 61°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 44%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 62°F | 41°F | 42% | 25% |
| May 8 | 65°F | 44°F | 42% | 24% |
| May 15 | 68°F | 47°F | 42% | 24% |
| May 22 | 70°F | 50°F | 43% | 25% |
| May 31 | 74°F | 53°F | 44% | 25% |
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 | 62°F | 41°F | 42% | 25% | 14 h 10 min |
| May 2 | 63°F | 41°F | 42% | 25% | 14 h 10 min |
| May 3 | 63°F | 42°F | 42% | 24% | 14 h 10 min |
| May 4 | 63°F | 42°F | 42% | 24% | 14 h 20 min |
| May 5 | 64°F | 43°F | 42% | 24% | 14 h 20 min |
| May 6 | 64°F | 43°F | 42% | 24% | 14 h 20 min |
| May 7 | 65°F | 43°F | 42% | 24% | 14 h 20 min |
| May 8 | 65°F | 44°F | 42% | 24% | 14 h 30 min |
| May 9 | 65°F | 44°F | 42% | 24% | 14 h 30 min |
| May 10 | 66°F | 45°F | 42% | 24% | 14 h 30 min |
| May 11 | 66°F | 45°F | 42% | 24% | 14 h 30 min |
| May 12 | 67°F | 46°F | 42% | 24% | 14 h 40 min |
| May 13 | 67°F | 46°F | 42% | 24% | 14 h 40 min |
| May 14 | 67°F | 46°F | 42% | 24% | 14 h 40 min |
| May 15 | 68°F | 47°F | 42% | 24% | 14 h 40 min |
| May 16 | 68°F | 47°F | 42% | 24% | 14 h 40 min |
| May 17 | 69°F | 48°F | 42% | 24% | 14 h 50 min |
| May 18 | 69°F | 48°F | 42% | 24% | 14 h 50 min |
| May 19 | 69°F | 48°F | 42% | 24% | 14 h 50 min |
| May 20 | 70°F | 49°F | 43% | 24% | 14 h 50 min |
| May 21 | 70°F | 49°F | 43% | 25% | 14 h 50 min |
| May 22 | 70°F | 50°F | 43% | 25% | 15 h |
| May 23 | 71°F | 50°F | 43% | 25% | 15 h |
| May 24 | 71°F | 50°F | 43% | 25% | 15 h |
| May 25 | 71°F | 51°F | 43% | 25% | 15 h |
| May 26 | 72°F | 51°F | 43% | 25% | 15 h |
| May 27 | 72°F | 52°F | 44% | 25% | 15 h 10 min |
| May 28 | 72°F | 52°F | 44% | 25% | 15 h 10 min |
| May 29 | 73°F | 52°F | 44% | 25% | 15 h 10 min |
| May 30 | 73°F | 53°F | 44% | 25% | 15 h 10 min |
| May 31 | 74°F | 53°F | 44% | 25% | 15 h 10 min |
- Normal high
- 68°FMay average
- Normal low
- 47°FMay average
- Precipitation
- 4.35 inmonth total
- Days with precipitation
- 130.01 inch or more
- Snowfall
- 0.5 inmonth total
- Days at 90°F or more
- 1
- Nights at 32°F or colder
- 1
- Daylight
- 14 h 10 min to 15 h 10 minMay 1 to May 31
- Days at 70°F or more
- 14
- Days at 80°F or more
- 4
- Sunshine
- 70%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014925; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Rochester in May?
On a given May day the chance of 0.01 inch or more is 43% on average, highest around May 27 (44%). In all, 4.35 in falls on 13 days of a normal May, 1 of them with an inch or more.
In a normal May in Rochester, 1 days reach 90°F, 1 nights fall to freezing and snowfall averages 0.5 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014925.
How humid and windy is Rochester in May?
At 3 p.m. the normal temperature is 71°F with 51% relative humidity and a dew point of 52°F; at 6 a.m. it is 57°F with 81% humidity. The wind averages 11.0 mph, most often from the southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 57°F | 51°F | 81% | 10.0 mph | 54% |
| 9 a.m. | 64°F | 52°F | 65% | 12.1 mph | 62% |
| noon | 69°F | 52°F | 54% | 13.5 mph | 52% |
| 3 p.m. | 71°F | 52°F | 51% | 13.1 mph | 57% |
| 6 p.m. | 68°F | 51°F | 55% | 11.9 mph | 59% |
| 9 p.m. | 62°F | 52°F | 69% | 9.0 mph | 63% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014925. 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 Rochester?
The warmest May temperature on Rochester's official record (since 1886) is 106°F, on May 31, 1934; the coldest is 21°F, on May 3, 1910. The wettest May brought 12.26 in (2013); the snowiest, 14.5 inches (2013).
The May mean against the 1991-2020 normal of 57.6°F: 2021 57.6°F (at normal), 2022 59.3°F (+1.7), 2023 60.9°F (+3.3), 2024 59.5°F (+1.9), 2025 58.9°F (+1.3), 2026 58.6°F (+1.0). 5 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 57.6°F | at normal | 4.10 in |
| 2022 | 59.3°F | +1.7°F | 4.20 in |
| 2023 | 60.9°F | +3.3°F | 4.51 in |
| 2024 | 59.5°F | +1.9°F | 4.33 in |
| 2025 | 58.9°F | +1.3°F | 1.92 in |
| 2026 | 58.6°F | +1.0°F | 0.86 in |
Source: records: ACIS, NWS threaded record RSTthr; recent months: ACIS, station USW00014925. Records and recent months use complete months only.
How does May in Rochester 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; Rochester's is 68°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.