International Falls weather in May: International Falls, Minnesota: normal highs, lows, rain and records for May
International Falls in May has a normal high of 64°F and a normal low of 38°F, a daily mean of 51°F, rising from 58°F on the 1st to 70°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 3.06 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 18°C and low of 3°C, 78 mm of precipitation and 1 cm of snow in May.
- NOAA stationInternational Falls International Airport
- Station IDUSW00014918
- Location48.56°N 93.40°W
- Elevation1,183 ft (361 m)
- Population5,498
- Jan 16° -6°
- Feb 22° -3°
- Mar 35° 12°
- Apr 50° 26°
- May 64° 38°
- Jun 74° 48°
- Jul 78° 52°
- Aug 76° 50°
- Sep 66° 42°
- Oct 51° 31°
- Nov 34° 18°
- Dec 21° 3°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is International Falls in May?
The normal high is 64°F and the normal low 38°F, for a daily mean of 51.1°F. May is 13.0°F warmer than April and 9.7°F cooler than June. May is the 5th warmest month of the year in International Falls and the 3rd wettest. Across the month the normal high rises 12°F, from 58°F on May 1 to 70°F on May 31. From one year to the next May's mean temperature typically moves about 3.4°F either way (NOAA's standard deviation), so roughly two Mays in three average between 48°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 44%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 58°F | 32°F | 36% | 19% |
| May 8 | 61°F | 35°F | 38% | 21% |
| May 15 | 64°F | 38°F | 40% | 22% |
| May 22 | 67°F | 41°F | 42% | 23% |
| May 31 | 70°F | 44°F | 44% | 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 | 58°F | 32°F | 36% | 19% | 14 h 30 min |
| May 2 | 58°F | 33°F | 36% | 19% | 14 h 30 min |
| May 3 | 59°F | 33°F | 37% | 19% | 14 h 40 min |
| May 4 | 59°F | 33°F | 37% | 20% | 14 h 40 min |
| May 5 | 60°F | 34°F | 37% | 20% | 14 h 40 min |
| May 6 | 60°F | 34°F | 38% | 20% | 14 h 50 min |
| May 7 | 61°F | 35°F | 38% | 20% | 14 h 50 min |
| May 8 | 61°F | 35°F | 38% | 21% | 14 h 50 min |
| May 9 | 61°F | 35°F | 39% | 21% | 14 h 50 min |
| May 10 | 62°F | 36°F | 39% | 21% | 15 h |
| May 11 | 62°F | 36°F | 39% | 21% | 15 h |
| May 12 | 63°F | 37°F | 39% | 22% | 15 h |
| May 13 | 63°F | 37°F | 40% | 22% | 15 h 10 min |
| May 14 | 64°F | 37°F | 40% | 22% | 15 h 10 min |
| May 15 | 64°F | 38°F | 40% | 22% | 15 h 10 min |
| May 16 | 65°F | 38°F | 40% | 22% | 15 h 10 min |
| May 17 | 65°F | 39°F | 41% | 22% | 15 h 20 min |
| May 18 | 65°F | 39°F | 41% | 23% | 15 h 20 min |
| May 19 | 66°F | 39°F | 41% | 23% | 15 h 20 min |
| May 20 | 66°F | 40°F | 41% | 23% | 15 h 20 min |
| May 21 | 66°F | 40°F | 42% | 23% | 15 h 30 min |
| May 22 | 67°F | 41°F | 42% | 23% | 15 h 30 min |
| May 23 | 67°F | 41°F | 42% | 24% | 15 h 30 min |
| May 24 | 68°F | 41°F | 42% | 24% | 15 h 30 min |
| May 25 | 68°F | 42°F | 42% | 24% | 15 h 40 min |
| May 26 | 68°F | 42°F | 43% | 24% | 15 h 40 min |
| May 27 | 69°F | 42°F | 43% | 24% | 15 h 40 min |
| May 28 | 69°F | 43°F | 43% | 24% | 15 h 40 min |
| May 29 | 69°F | 43°F | 43% | 24% | 15 h 40 min |
| May 30 | 70°F | 43°F | 43% | 24% | 15 h 50 min |
| May 31 | 70°F | 44°F | 44% | 24% | 15 h 50 min |
- Normal high
- 64°FMay average
- Normal low
- 38°FMay average
- Precipitation
- 3.06 inmonth total
- Days with precipitation
- 130.01 inch or more
- Snowfall
- 0.2 inmonth total
- Nights at 32°F or colder
- 9
- Daylight
- 14 h 30 min to 15 h 50 minMay 1 to May 31
- Days at 70°F or more
- 11
- Days at 80°F or more
- 3
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014918; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in International Falls in May?
On a given May day the chance of 0.01 inch or more is 40% on average, highest around May 31 (44%). In all, 3.06 in falls on 13 days of a normal May.
In a normal May in International Falls, 9 nights fall to freezing and snowfall averages 0.2 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014918.
How humid and windy is International Falls in May?
At 3 p.m. the normal temperature is 67°F with 46% relative humidity and a dew point of 46°F; at 6 a.m. it is 51°F with 82% humidity. The wind averages 7.1 mph, most often from the north-northwest 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 | 46°F | 82% | 5.8 mph | 50% |
| 9 a.m. | 60°F | 46°F | 60% | 8.5 mph | 49% |
| noon | 66°F | 46°F | 49% | 9.7 mph | 43% |
| 3 p.m. | 67°F | 46°F | 46% | 9.8 mph | 39% |
| 6 p.m. | 65°F | 46°F | 49% | 8.3 mph | 47% |
| 9 p.m. | 56°F | 47°F | 71% | 4.7 mph | 53% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014918. 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 International Falls?
The warmest May temperature on International Falls's official record (since 1897) is 96°F, on May 11, 2025; the coldest is 8°F, on May 17, 1926. The wettest May brought 6.67 in (1985); the snowiest, 13.4 inches (1954).
The May mean against the 1991-2020 normal of 51.1°F: 2021 52.7°F (+1.6), 2022 52.3°F (+1.2), 2023 57.4°F (+6.3), 2024 52.3°F (+1.2), 2025 56.2°F (+5.1), 2026 49.1°F (−2.0). 5 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 52.7°F | +1.6°F | 0.62 in |
| 2022 | 52.3°F | +1.2°F | 5.79 in |
| 2023 | 57.4°F | +6.3°F | 2.16 in |
| 2024 | 52.3°F | +1.2°F | 4.71 in |
| 2025 | 56.2°F | +5.1°F | 0.51 in |
| 2026 | 49.1°F | −2.0°F | 0.86 in |
Source: records: ACIS, NWS threaded record INLthr; recent months: ACIS, station USW00014918. Records and recent months use complete months only.
How does May in International Falls 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; International Falls's is 64°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- International Falls in April50°F by day, 26°F at night
- International Falls in June74°F by day, 48°F at night
- International Falls through the yearEvery month, frost dates, records and recent years
- Minnesota in MayThe statewide normal and the warmest and coolest places
- Amboy: Minnesota's warmest Maynormal high 73°F