Billings weather in May: Billings, Montana: normal highs, lows, rain and records for May
Billings in May has a normal high of 67°F and a normal low of 44°F, a daily mean of 55°F, rising from 61°F on the 1st to 72°F by the 31st. Measurable precipitation falls on 12 days in a normal May, 2.36 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 7°C, 60 mm of precipitation and 2 cm of snow in May.
- NOAA stationBillings International Airport
- Station IDUSW00024033
- Location45.81°N 108.54°W
- Elevation3,581 ft (1,092 m)
- From the center1 miles
- Population121,483
- Jan 36° 18°
- Feb 39° 20°
- Mar 49° 27°
- Apr 57° 35°
- May 67° 44°
- Jun 77° 52°
- Jul 87° 59°
- Aug 86° 58°
- Sep 74° 49°
- Oct 59° 37°
- Nov 46° 27°
- Dec 36° 19°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Billings in May?
The normal high is 67°F and the normal low 44°F, for a daily mean of 55.3°F. May is 9.5°F warmer than April and 9.4°F cooler than June. May is the 5th warmest month of the year in Billings and the wettest. Across the month the normal high rises 11°F, from 61°F on May 1 to 72°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 53°F and 58°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 | 61°F | 39°F | 37% | 17% |
| May 8 | 64°F | 41°F | 39% | 18% |
| May 15 | 67°F | 44°F | 40% | 19% |
| May 22 | 69°F | 46°F | 41% | 20% |
| May 31 | 72°F | 49°F | 41% | 21% |
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 | 61°F | 39°F | 37% | 17% | 14 h 20 min |
| May 2 | 62°F | 39°F | 37% | 17% | 14 h 20 min |
| May 3 | 62°F | 39°F | 38% | 17% | 14 h 20 min |
| May 4 | 63°F | 40°F | 38% | 17% | 14 h 30 min |
| May 5 | 63°F | 40°F | 38% | 17% | 14 h 30 min |
| May 6 | 63°F | 40°F | 38% | 18% | 14 h 30 min |
| May 7 | 64°F | 41°F | 39% | 18% | 14 h 30 min |
| May 8 | 64°F | 41°F | 39% | 18% | 14 h 40 min |
| May 9 | 64°F | 41°F | 39% | 18% | 14 h 40 min |
| May 10 | 65°F | 42°F | 39% | 18% | 14 h 40 min |
| May 11 | 65°F | 42°F | 39% | 18% | 14 h 40 min |
| May 12 | 66°F | 43°F | 40% | 19% | 14 h 50 min |
| May 13 | 66°F | 43°F | 40% | 19% | 14 h 50 min |
| May 14 | 66°F | 43°F | 40% | 19% | 14 h 50 min |
| May 15 | 67°F | 44°F | 40% | 19% | 14 h 50 min |
| May 16 | 67°F | 44°F | 40% | 19% | 15 h |
| May 17 | 67°F | 44°F | 40% | 20% | 15 h |
| May 18 | 68°F | 45°F | 40% | 20% | 15 h |
| May 19 | 68°F | 45°F | 40% | 20% | 15 h |
| May 20 | 69°F | 45°F | 40% | 20% | 15 h |
| May 21 | 69°F | 46°F | 41% | 20% | 15 h 10 min |
| May 22 | 69°F | 46°F | 41% | 20% | 15 h 10 min |
| May 23 | 70°F | 46°F | 41% | 21% | 15 h 10 min |
| May 24 | 70°F | 47°F | 41% | 21% | 15 h 10 min |
| May 25 | 70°F | 47°F | 41% | 21% | 15 h 20 min |
| May 26 | 70°F | 47°F | 41% | 21% | 15 h 20 min |
| May 27 | 71°F | 48°F | 41% | 21% | 15 h 20 min |
| May 28 | 71°F | 48°F | 41% | 21% | 15 h 20 min |
| May 29 | 71°F | 48°F | 41% | 21% | 15 h 20 min |
| May 30 | 72°F | 48°F | 41% | 21% | 15 h 20 min |
| May 31 | 72°F | 49°F | 41% | 21% | 15 h 30 min |
- Normal high
- 67°FMay average
- Normal low
- 44°FMay average
- Precipitation
- 2.36 inmonth total
- Days with precipitation
- 120.01 inch or more
- Snowfall
- 0.9 inmonth total
- Nights at 32°F or colder
- 2
- Daylight
- 14 h 20 min to 15 h 30 minMay 1 to May 31
- Days at 70°F or more
- 13
- Days at 80°F or more
- 4
- Sunshine
- 69%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024033; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Billings in May?
On a given May day the chance of 0.01 inch or more is 40% on average, highest around May 24 (41%). In all, 2.36 in falls on 12 days of a normal May.
In a normal May in Billings, 2 nights fall to freezing and snowfall averages 0.9 inches.
Snow falls on 1 day in a normal May.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024033.
How humid and windy is Billings in May?
At 3 p.m. the normal temperature is 69°F with 37% relative humidity and a dew point of 42°F; at 6 a.m. it is 52°F with 73% humidity. The wind averages 9.4 mph, most often from the north in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 52°F | 43°F | 73% | 8.1 mph | 41% |
| 9 a.m. | 60°F | 44°F | 56% | 8.9 mph | 44% |
| noon | 67°F | 43°F | 42% | 10.1 mph | 36% |
| 3 p.m. | 69°F | 42°F | 37% | 11.2 mph | 23% |
| 6 p.m. | 67°F | 43°F | 43% | 11.5 mph | 23% |
| 9 p.m. | 60°F | 44°F | 57% | 8.9 mph | 34% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024033. 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 Billings?
The warmest May temperature on Billings's official record (since 1934) is 96°F, on May 14, 1936; the coldest is 14°F, on May 2, 1954. The wettest May brought 9.54 in (2011); the snowiest, 15.6 inches (1981).
The May mean against the 1991-2020 normal of 55.3°F: 2021 53.6°F (−1.7), 2022 53.2°F (−2.1), 2023 60.6°F (+5.3), 2024 53.5°F (−1.8), 2025 58.1°F (+2.8), 2026 59.1°F (+3.8). 3 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 53.6°F | −1.7°F | 1.21 in |
| 2022 | 53.2°F | −2.1°F | 2.08 in |
| 2023 | 60.6°F | +5.3°F | 2.87 in |
| 2024 | 53.5°F | −1.8°F | 3.87 in |
| 2025 | 58.1°F | +2.8°F | 2.60 in |
| 2026 | 59.1°F | +3.8°F | 1.94 in |
Source: records: ACIS, NWS threaded record BILthr; recent months: ACIS, station USW00024033. Records and recent months use complete months only.
How does May in Billings 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; Billings's is 67°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.