Duluth weather in May: Duluth, Minnesota: normal highs, lows, rain and records for May
Duluth in May has a normal high of 63°F and a normal low of 41°F, a daily mean of 52°F, rising from 57°F on the 1st to 68°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 3.37 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 17°C and low of 5°C, 86 mm of precipitation and 2 cm of snow in May.
- NOAA stationDuluth International Airport
- Station IDUSW00014913
- Location46.84°N 92.21°W
- Elevation1,428 ft (435 m)
- From the center6 miles
- Population87,986
- Jan 20° 2°
- Feb 25° 6°
- Mar 36° 18°
- Apr 49° 30°
- May 63° 41°
- Jun 72° 50°
- Jul 78° 56°
- Aug 76° 55°
- Sep 67° 47°
- Oct 53° 36°
- Nov 37° 23°
- Dec 25° 10°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Duluth in May?
The normal high is 63°F and the normal low 41°F, for a daily mean of 52.0°F. May is 12.5°F warmer than April and 9.2°F cooler than June. May is the 5th warmest month of the year in Duluth and the 5th wettest. Across the month the normal high rises 11°F, from 57°F on May 1 to 68°F on May 31. From one year to the next May's mean temperature typically moves about 2.8°F either way (NOAA's standard deviation), so roughly two Mays in three average between 49°F and 55°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 41%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 57°F | 36°F | 38% | 21% |
| May 8 | 60°F | 39°F | 39% | 23% |
| May 15 | 63°F | 41°F | 40% | 24% |
| May 22 | 65°F | 43°F | 41% | 24% |
| May 31 | 68°F | 46°F | 41% | 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 | 57°F | 36°F | 38% | 21% | 14 h 20 min |
| May 2 | 57°F | 36°F | 38% | 21% | 14 h 20 min |
| May 3 | 58°F | 37°F | 39% | 22% | 14 h 30 min |
| May 4 | 58°F | 37°F | 39% | 22% | 14 h 30 min |
| May 5 | 59°F | 37°F | 39% | 22% | 14 h 30 min |
| May 6 | 59°F | 38°F | 39% | 22% | 14 h 40 min |
| May 7 | 60°F | 38°F | 39% | 22% | 14 h 40 min |
| May 8 | 60°F | 39°F | 39% | 23% | 14 h 40 min |
| May 9 | 61°F | 39°F | 40% | 23% | 14 h 40 min |
| May 10 | 61°F | 39°F | 40% | 23% | 14 h 50 min |
| May 11 | 61°F | 40°F | 40% | 23% | 14 h 50 min |
| May 12 | 62°F | 40°F | 40% | 23% | 14 h 50 min |
| May 13 | 62°F | 40°F | 40% | 23% | 14 h 50 min |
| May 14 | 63°F | 41°F | 40% | 24% | 15 h |
| May 15 | 63°F | 41°F | 40% | 24% | 15 h |
| May 16 | 63°F | 41°F | 40% | 24% | 15 h |
| May 17 | 64°F | 41°F | 40% | 24% | 15 h |
| May 18 | 64°F | 42°F | 40% | 24% | 15 h 10 min |
| May 19 | 64°F | 42°F | 40% | 24% | 15 h 10 min |
| May 20 | 65°F | 42°F | 40% | 24% | 15 h 10 min |
| May 21 | 65°F | 43°F | 40% | 24% | 15 h 10 min |
| May 22 | 65°F | 43°F | 41% | 24% | 15 h 20 min |
| May 23 | 66°F | 43°F | 41% | 24% | 15 h 20 min |
| May 24 | 66°F | 44°F | 41% | 24% | 15 h 20 min |
| May 25 | 66°F | 44°F | 41% | 25% | 15 h 20 min |
| May 26 | 67°F | 44°F | 41% | 25% | 15 h 20 min |
| May 27 | 67°F | 45°F | 41% | 25% | 15 h 30 min |
| May 28 | 67°F | 45°F | 41% | 25% | 15 h 30 min |
| May 29 | 68°F | 45°F | 41% | 25% | 15 h 30 min |
| May 30 | 68°F | 45°F | 41% | 25% | 15 h 30 min |
| May 31 | 68°F | 46°F | 41% | 25% | 15 h 30 min |
- Normal high
- 63°FMay average
- Normal low
- 41°FMay average
- Precipitation
- 3.37 inmonth total
- Days with precipitation
- 130.01 inch or more
- Snowfall
- 0.8 inmonth total
- Nights at 32°F or colder
- 4
- Daylight
- 14 h 20 min to 15 h 30 minMay 1 to May 31
- Days at 70°F or more
- 8
- Days at 80°F or more
- 2
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014913; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Duluth in May?
On a given May day the chance of 0.01 inch or more is 40% on average, highest around May 27 (41%). In all, 3.37 in falls on 13 days of a normal May, 1 of them with an inch or more.
In a normal May in Duluth, 4 nights fall to freezing and snowfall averages 0.8 inches.
Snow falls on 1 day in a normal May.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014913.
How humid and windy is Duluth in May?
At 3 p.m. the normal temperature is 64°F with 50% relative humidity and a dew point of 45°F; at 6 a.m. it is 51°F with 77% humidity. The wind averages 9.4 mph, most often from the east-southeast in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 51°F | 44°F | 77% | 7.9 mph | 46% |
| 9 a.m. | 58°F | 45°F | 61% | 10.4 mph | 49% |
| noon | 63°F | 45°F | 53% | 12.0 mph | 38% |
| 3 p.m. | 64°F | 45°F | 50% | 11.9 mph | 41% |
| 6 p.m. | 61°F | 44°F | 53% | 10.8 mph | 44% |
| 9 p.m. | 54°F | 44°F | 68% | 7.5 mph | 56% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014913. 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 Duluth?
The warmest May temperature on Duluth's official record (since 1874) is 95°F, on May 30, 1939; the coldest is 16°F, on May 3, 1907. The wettest May brought 7.99 in (1879); the snowiest, 13.3 inches (2019).
The May mean against the 1991-2020 normal of 52.0°F: 2021 53.5°F (+1.5), 2022 52.6°F (+0.6), 2023 54.0°F (+2.0), 2024 53.1°F (+1.1), 2025 53.3°F (+1.3), 2026 49.8°F (−2.2). 5 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 53.5°F | +1.5°F | 1.88 in |
| 2022 | 52.6°F | +0.6°F | 4.79 in |
| 2023 | 54.0°F | +2.0°F | 0.80 in |
| 2024 | 53.1°F | +1.1°F | 4.15 in |
| 2025 | 53.3°F | +1.3°F | 1.48 in |
| 2026 | 49.8°F | −2.2°F | 1.27 in |
Source: records: ACIS, NWS threaded record DLHthr; recent months: ACIS, station USW00014913. Records and recent months use complete months only.
How does May in Duluth 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; Duluth's is 63°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.