Wibaux, Montana climate: Normal weather by month, frost dates and records
Wibaux's normal year runs from 5°F January nights to 84°F July afternoons, with 16.1 inches of precipitation and 38 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.6°C, January lows of −15°C, July highs of 29°C, 408 mm of precipitation a year.
- NOAA stationWibaux (2 mi E)
- Station IDUSC00248957
- Location46.99°N 104.16°W
- Elevation2,696 ft (822 m)
- Population451
On October 22, the normal high in Wibaux is 52°F and the normal low 27°F, and the chance of measurable rain or snow is 18%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Wibaux.
- Jan 27° 5°
- Feb 30° 8°
- Mar 43° 18°
- Apr 55° 28°
- May 65° 38°
- Jun 75° 48°
- Jul 84° 53°
- Aug 84° 51°
- Sep 73° 42°
- Oct 56° 30°
- Nov 41° 18°
- Dec 30° 9°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Wibaux each month?
July is the warmest month, with normal highs of 84°F; January the coldest, with normal lows of 5°F. The most precipitation falls in June (2.80 in), the least in January (0.26 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 27°F | 5°F | 15.8°F | 0.26 | 6.4 | 4 | <1 | 31 | 8 h 50 min |
| February | 30°F | 8°F | 19.4°F | 0.38 | 7.9 | 5 | <1 | 28 | 10 h 20 min |
| March | 43°F | 18°F | 30.3°F | 0.55 | 4.0 | 5 | <1 | 28 | 11 h 50 min |
| April | 55°F | 28°F | 41.2°F | 1.50 | 4.7 | 7 | <1 | 21 | 13 h 30 min |
| May | 65°F | 38°F | 51.8°F | 2.72 | 1.3 | 9 | <1 | 7 | 15 h |
| June | 75°F | 48°F | 61.4°F | 2.80 | 0.0 | 10 | 2 | <1 | 15 h 50 min |
| July | 84°F | 53°F | 68.6°F | 2.29 | 0.0 | 7 | 9 | <1 | 15 h 30 min |
| August | 84°F | 51°F | 67.4°F | 1.77 | 0.0 | 5 | 9 | <1 | 14 h 20 min |
| September | 73°F | 42°F | 57.4°F | 1.78 | 0.1 | 6 | 3 | 3 | 12 h 40 min |
| October | 56°F | 30°F | 42.7°F | 1.22 | 2.3 | 6 | <1 | 18 | 11 h |
| November | 41°F | 18°F | 29.2°F | 0.47 | 4.4 | 4 | <1 | 28 | 9 h 20 min |
| December | 30°F | 9°F | 19.0°F | 0.32 | 6.9 | 5 | <1 | 31 | 8 h 30 min |
| Year (annual) | 55°F | 29°F | 42.0°F | 16.06 | 38.0 | 73 | 23 | 194 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −3°C | −15°C | −9.0°C | 7 mm | 16 cm |
| February | −1°C | −13°C | −7.0°C | 10 mm | 20 cm |
| March | 6°C | −8°C | −0.9°C | 14 mm | 10 cm |
| April | 13°C | −2°C | 5.1°C | 38 mm | 12 cm |
| May | 19°C | 3°C | 11.0°C | 69 mm | 3 cm |
| June | 24°C | 9°C | 16.3°C | 71 mm | 0 cm |
| July | 29°C | 12°C | 20.3°C | 58 mm | 0 cm |
| August | 29°C | 10°C | 19.7°C | 45 mm | 0 cm |
| September | 23°C | 6°C | 14.1°C | 45 mm | 0 cm |
| October | 13°C | −1°C | 5.9°C | 31 mm | 6 cm |
| November | 5°C | −8°C | −1.6°C | 12 mm | 11 cm |
| December | −1°C | −13°C | −7.2°C | 8 mm | 18 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00248957; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Wibaux?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, August has the fewest days with rain (5).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00248957.
When is the last frost in Wibaux?
In Wibaux, the last spring frost (32°F) comes after May 27 in half of years and after June 13 in one year in ten; the first autumn frost comes before September 16 in half of years and before September 2 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 271 year in 10 after June 13; 9 in 10 after May 15
- First autumn frost, half of years before
- September 161 year in 10 before September 2; 9 in 10 before September 29
NOAA puts the median frost-free season at 112 days, and the season without a hard freeze (28°F) at 131 days.
A hard freeze (28°F) comes after May 17 in half of springs and before September 26 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Wibaux in zone 4a in ZIP code 59353, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Wibaux's NOAA station is in zone 4a: the coldest night of a typical year reaches −29°F (27 complete years).
Frost dates for every NOAA station in Montana · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00248957; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Wibaux?
In a normal year in Wibaux, 23 days a year reach 90°F (2 of them 100°F or more), 194 nights fall to 32°F or colder and 73 days bring measurable precipitation.
- Days at 90°F or more
- 23a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 194a normal year
- Days that stay below freezing
- 67high of 32°F or less
- Days with 0.01 inch of precipitation
- 73a normal year
- Days with 1 inch of snow or more
- 18a normal year
The highest temperature in this station's record (since 1895) is 110°F, on May 29, 1919; the lowest is −55°F, on January 12, 1916.
The wettest calendar year on that record is 2011, with 22.81 in; the snowiest season is 1981–82, with 67.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00248957; records: ACIS (NOAA Regional Climate Centers), station USC00248957. Records use complete months only; a month missing more than three days is left out.
How sunny is Wibaux?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Wibaux, 4.1 kWh per square metre a day. July is the sunniest month (88%) and December the cloudiest (70%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 1.7 |
| February | 78% | 2.8 |
| March | 74% | 3.9 |
| April | 72% | 5.0 |
| May | 73% | 5.9 |
| June | 80% | 6.8 |
| July | 88% | 7.2 |
| August | 86% | 6.0 |
| September | 80% | 4.4 |
| October | 74% | 2.9 |
| November | 74% | 1.9 |
| December | 70% | 1.3 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Wibaux need?
A normal year in Wibaux brings 8,692 heating degree days, 62% more than the median U.S. place (5,373), and 353 cooling degree days, 61% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,927 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,525 | 0 |
| February | 1,277 | 0 |
| March | 1,076 | 0 |
| April | 713 | 0 |
| May | 414 | 5 |
| June | 147 | 39 |
| July | 37 | 150 |
| August | 55 | 129 |
| September | 258 | 29 |
| October | 691 | 1 |
| November | 1,074 | 0 |
| December | 1,426 | 0 |
| Year (annual) | 8,692 | 353 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00248957. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Wibaux been warmer than normal lately?
Over 69 complete years from 1917 to 2020, the station's annual mean temperature rose at a fitted 3.6°F per century (+0.20°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Wibaux's climate compare?
Wibaux is warmer than 30 of the other 140 places with their own NOAA record in Montana, and wetter than 93. Across the 7,247 U.S. stations with normals, its annual mean of 42.0°F is warmer than 9%.
In the Köppen classification computed from these normals, Wibaux is Dwb: continental, dry-winter, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Wibaux share this climate record?
Sentinel Butte has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Sentinel Butte, ND70 people · 16 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Wibaux's climate
What is the coldest month in Wibaux?
January, with a normal high of 27°F and a normal low of 5°F. The warmest is July (84°F by day, 53°F at night).
Does it snow in Wibaux?
Yes: 38 inches in a normal year, falling on 20 days with 0.1 inch or more, the most in February (7.9 inches).
What is the rainiest month in Wibaux?
June, with 2.80 in of precipitation in a normal year; the driest is January with 0.26 in.
What plant hardiness zone is Wibaux in?
The USDA's 2023 map puts Wibaux in zone 4a in ZIP code 59353, the nearest ZIP area. By the same method at Wibaux's NOAA station, the coldest night of a typical year reaches −29°F (27 years, 1991-2020): zone 4a.
How late can frost come in Wibaux?
In half of years the last 32°F night comes after May 27; in one year in ten it comes after June 13. Waiting until June 13 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Montana climateThe statewide normals and every place in the state
- Beach, ND8 miles from this station, 43.7°F a year
- Carlyle (13 mi NW), MT18 miles from this station, 43.2°F a year
- Trotters (3 mi SSE), ND24 miles from this station, 43.6°F a year
- Glendive, MT27 miles from this station, 46.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made