Bozeman weather in May: Bozeman, Montana: normal highs, lows, rain and records for May
Bozeman in May has a normal high of 65°F and a normal low of 38°F, a daily mean of 51°F, rising from 60°F on the 1st to 69°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 2.12 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 18°C and low of 3°C, 54 mm of precipitation in May.
- NOAA stationBozeman Gallatin Field
- Station IDUSW00024132
- Location45.79°N 111.16°W
- Elevation4,427 ft (1,349 m)
- Population57,894
- Jan 32° 10°
- Feb 36° 13°
- Mar 46° 22°
- Apr 55° 29°
- May 65° 38°
- Jun 74° 44°
- Jul 85° 49°
- Aug 84° 47°
- Sep 73° 40°
- Oct 58° 29°
- Nov 42° 18°
- Dec 32° 10°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Bozeman in May?
The normal high is 65°F and the normal low 38°F, for a daily mean of 51.3°F. May is 9.1°F warmer than April and 7.6°F cooler than June. May is the 5th warmest month of the year in Bozeman and the 2nd wettest. Across the month the normal high rises 9°F, from 60°F on May 1 to 69°F on May 31. From one year to the next May's mean temperature typically moves about 2.4°F either way (NOAA's standard deviation), so roughly two Mays in three average between 49°F and 54°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 47%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 60°F | 33°F | 40% | 18% |
| May 8 | 63°F | 35°F | 40% | 19% |
| May 15 | 65°F | 38°F | 42% | 21% |
| May 22 | 67°F | 40°F | 45% | 23% |
| May 31 | 69°F | 42°F | 47% | 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 | 60°F | 33°F | 40% | 18% | 14 h 20 min |
| May 2 | 60°F | 33°F | 40% | 18% | 14 h 20 min |
| May 3 | 61°F | 33°F | 40% | 18% | 14 h 20 min |
| May 4 | 61°F | 34°F | 40% | 18% | 14 h 30 min |
| May 5 | 61°F | 34°F | 40% | 19% | 14 h 30 min |
| May 6 | 62°F | 34°F | 40% | 19% | 14 h 30 min |
| May 7 | 62°F | 35°F | 40% | 19% | 14 h 30 min |
| May 8 | 63°F | 35°F | 40% | 19% | 14 h 40 min |
| May 9 | 63°F | 35°F | 41% | 19% | 14 h 40 min |
| May 10 | 63°F | 36°F | 41% | 19% | 14 h 40 min |
| May 11 | 64°F | 36°F | 41% | 20% | 14 h 40 min |
| May 12 | 64°F | 37°F | 41% | 20% | 14 h 50 min |
| May 13 | 64°F | 37°F | 42% | 20% | 14 h 50 min |
| May 14 | 65°F | 37°F | 42% | 20% | 14 h 50 min |
| May 15 | 65°F | 38°F | 42% | 21% | 14 h 50 min |
| May 16 | 65°F | 38°F | 43% | 21% | 15 h |
| May 17 | 66°F | 38°F | 43% | 21% | 15 h |
| May 18 | 66°F | 39°F | 44% | 22% | 15 h |
| May 19 | 66°F | 39°F | 44% | 22% | 15 h |
| May 20 | 67°F | 39°F | 44% | 23% | 15 h |
| May 21 | 67°F | 39°F | 45% | 23% | 15 h 10 min |
| May 22 | 67°F | 40°F | 45% | 23% | 15 h 10 min |
| May 23 | 67°F | 40°F | 45% | 24% | 15 h 10 min |
| May 24 | 68°F | 40°F | 46% | 24% | 15 h 10 min |
| May 25 | 68°F | 41°F | 46% | 24% | 15 h 20 min |
| May 26 | 68°F | 41°F | 46% | 24% | 15 h 20 min |
| May 27 | 68°F | 41°F | 46% | 25% | 15 h 20 min |
| May 28 | 69°F | 41°F | 46% | 25% | 15 h 20 min |
| May 29 | 69°F | 41°F | 47% | 25% | 15 h 20 min |
| May 30 | 69°F | 42°F | 47% | 25% | 15 h 20 min |
| May 31 | 69°F | 42°F | 47% | 25% | 15 h 30 min |
- Normal high
- 65°FMay average
- Normal low
- 38°FMay average
- Precipitation
- 2.12 inmonth total
- Days with precipitation
- 130.01 inch or more
- Nights at 32°F or colder
- 7
- Daylight
- 14 h 20 min to 15 h 30 minMay 1 to May 31
- Days at 70°F or more
- 11
- Days at 80°F or more
- 3
- Sunshine
- 67%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024132; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Bozeman in May?
On a given May day the chance of 0.01 inch or more is 43% on average, highest around May 31 (47%). In all, 2.12 in falls on 13 days of a normal May.
In a normal May in Bozeman, 7 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024132.
How humid and windy is Bozeman in May?
At 3 p.m. the normal temperature is 66°F with 40% relative humidity and a dew point of 41°F; at 6 a.m. it is 47°F with 82% humidity. The wind averages 6.2 mph, most often from the 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. | 47°F | 42°F | 82% | 4.2 mph | 53% |
| 9 a.m. | 57°F | 43°F | 59% | 4.4 mph | 52% |
| noon | 64°F | 42°F | 45% | 6.4 mph | 46% |
| 3 p.m. | 66°F | 41°F | 40% | 8.2 mph | 44% |
| 6 p.m. | 64°F | 42°F | 46% | 8.5 mph | 43% |
| 9 p.m. | 54°F | 43°F | 65% | 7.4 mph | 45% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024132. 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 Bozeman?
The warmest May temperature on this station's record (since 1941) is 92°F, on May 19, 1954; the coldest is 14°F, on May 9, 2002. The wettest May brought 6.20 in (1981); the snowiest, 11.2 inches (1965).
The May mean against the 1991-2020 normal of 51.3°F: 2021 48.9°F (−2.4), 2022 48.2°F (−3.1), 2023 56.4°F (+5.1), 2024 48.0°F (−3.3), 2025 54.1°F (+2.8), 2026 52.7°F (+1.4). 3 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 48.9°F | −2.4°F | 2.81 in |
| 2022 | 48.2°F | −3.1°F | 3.18 in |
| 2023 | 56.4°F | +5.1°F | 2.88 in |
| 2024 | 48.0°F | −3.3°F | 3.44 in |
| 2025 | 54.1°F | +2.8°F | 1.37 in |
| 2026 | 52.7°F | +1.4°F | 2.90 in |
Source: records: ACIS, station USW00024132; recent months: ACIS, station USW00024132. Records and recent months use complete months only.
How does May in Bozeman compare across Montana?
Across the 141 places PlainClimate covers in Montana, May normal highs run from 54°F in Cooke City to 72°F in Savage; Bozeman's is 65°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.