Wyola, Montana climate: Normal weather by month, frost dates and records
Wyola's normal year runs from 10°F January nights to 90°F July afternoons, with 16.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.8°C, January lows of −12°C, July highs of 32°C, 419 mm of precipitation a year.
- NOAA stationWyola (1 mi SW)
- Station IDUSC00249175
- Location45.12°N 107.41°W
- Elevation3,730 ft (1,137 m)
- Population (census place)264
On October 22, the normal high in Wyola is 57°F and the normal low 27°F, and the chance of measurable rain or snow is 23%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Wyola.
- Jan 38° 10°
- Feb 41° 12°
- Mar 51° 21°
- Apr 61° 29°
- May 71° 38°
- Jun 81° 48°
- Jul 90° 52°
- Aug 87° 49°
- Sep 78° 40°
- Oct 61° 29°
- Nov 47° 19°
- Dec 38° 11°
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 Wyola each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 10°F. The most precipitation falls in May (3.85 in), the least in January (0.39 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 38°F | 10°F | 24.2°F | 0.39 | 5 | <1 | 31 | 9 h 10 min |
| February | 41°F | 12°F | 26.4°F | 0.41 | 4 | <1 | 27 | 10 h 20 min |
| March | 51°F | 21°F | 36.2°F | 0.73 | 6 | <1 | 28 | 11 h 50 min |
| April | 61°F | 29°F | 44.9°F | 2.08 | 10 | <1 | 19 | 13 h 30 min |
| May | 71°F | 38°F | 54.3°F | 3.85 | 10 | 1 | 7 | 14 h 50 min |
| June | 81°F | 48°F | 64.4°F | 2.09 | 11 | 5 | 1 | 15 h 40 min |
| July | 90°F | 52°F | 71.1°F | 1.67 | 8 | 17 | <1 | 15 h 20 min |
| August | 87°F | 49°F | 68.4°F | 0.67 | 6 | 14 | <1 | 14 h 10 min |
| September | 78°F | 40°F | 58.9°F | 1.41 | 8 | 3 | 6 | 12 h 40 min |
| October | 61°F | 29°F | 45.0°F | 1.83 | 8 | <1 | 20 | 11 h |
| November | 47°F | 19°F | 33.1°F | 0.81 | 5 | <1 | 28 | 9 h 40 min |
| December | 38°F | 11°F | 24.7°F | 0.54 | 4 | <1 | 31 | 8 h 50 min |
| Year (annual) | 62°F | 30°F | 46.0°F | 16.48 | 84 | 39 | 197 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 3°C | −12°C | −4.3°C | 10 mm |
| February | 5°C | −11°C | −3.1°C | 10 mm |
| March | 11°C | −6°C | 2.3°C | 19 mm |
| April | 16°C | −2°C | 7.2°C | 53 mm |
| May | 22°C | 3°C | 12.4°C | 98 mm |
| June | 27°C | 9°C | 18.0°C | 53 mm |
| July | 32°C | 11°C | 21.7°C | 42 mm |
| August | 31°C | 10°C | 20.2°C | 17 mm |
| September | 25°C | 5°C | 14.9°C | 36 mm |
| October | 16°C | −2°C | 7.2°C | 46 mm |
| November | 8°C | −7°C | 0.6°C | 21 mm |
| December | 3°C | −12°C | −4.1°C | 14 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Dayton (18 miles away), gets 68 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00249175; 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 Wyola?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September has the fewest days with rain (8).
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 USC00249175.
When is the last frost in Wyola?
In Wyola, the last spring frost (32°F) comes after May 21 in half of years and after June 2 in one year in ten; the first autumn frost comes before September 17 in half of years and before September 5 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 211 year in 10 after June 2; 9 in 10 after May 9
- First autumn frost, half of years before
- September 171 year in 10 before September 5; 9 in 10 before October 1
NOAA puts the median frost-free season at 117 days, and the season without a hard freeze (28°F) at 140 days.
A hard freeze (28°F) comes after May 10 in half of springs and before September 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Wyola in zone 4b in ZIP code 59089, the nearest ZIP area.
Frost dates for every NOAA station in Montana · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00249175; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Wyola?
In a normal year in Wyola, 39 days a year reach 90°F (5 of them 100°F or more), 197 nights fall to 32°F or colder and 84 days bring measurable precipitation.
- Days at 90°F or more
- 39a normal year
- Days at 100°F or more
- 5a normal year
- Nights at 32°F or colder
- 197a normal year
- Days that stay below freezing
- 30high of 32°F or less
- Days with 0.01 inch of precipitation
- 84a normal year
The highest temperature in this station's record (since 1922) is 108°F, on July 5, 1936; the lowest is −43°F, on February 17, 1936.
The wettest calendar year on that record is 1946, with 20.63 in; the snowiest season is 1972–73, with 140.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00249175; records: ACIS (NOAA Regional Climate Centers), station USC00249175. Records use complete months only; a month missing more than three days is left out.
How sunny is Wyola?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Wyola, 4.2 kWh per square metre a day. July is the sunniest month (89%) and April the cloudiest (70%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 1.8 |
| February | 77% | 2.8 |
| March | 73% | 3.9 |
| April | 70% | 4.9 |
| May | 72% | 5.9 |
| June | 80% | 6.9 |
| July | 89% | 7.3 |
| August | 86% | 6.1 |
| September | 81% | 4.6 |
| October | 73% | 2.9 |
| November | 73% | 1.9 |
| December | 70% | 1.4 |
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 Wyola need?
A normal year in Wyola brings 7,375 heating degree days, 37% more than the median U.S. place (5,373), and 468 cooling degree days, 48% 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 2,222 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,263 | 0 |
| February | 1,081 | 0 |
| March | 894 | 0 |
| April | 605 | 0 |
| May | 340 | 8 |
| June | 93 | 75 |
| July | 22 | 211 |
| August | 43 | 146 |
| September | 210 | 27 |
| October | 619 | 1 |
| November | 955 | 0 |
| December | 1,251 | 0 |
| Year (annual) | 7,375 | 468 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00249175. 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.
How does Wyola's climate compare?
Wyola is warmer than 112 of the other 140 places with their own NOAA record in Montana, and wetter than 99. Across the 7,247 U.S. stations with normals, its annual mean of 46.0°F is warmer than 23%.
In the Köppen classification computed from these normals, Wyola is BSk: cold semi-arid steppe. 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 Wyola share this climate record?
3 places have no NOAA station with 1991-2020 normals of their 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.
- Lodge Grass, MT427 people · 13 mi N
- Parkman, WY396 people · 12 mi S
- Forty Mile Colony, MT0 people · 11 mi N
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 Wyola's climate
What is the coldest month in Wyola?
January, with a normal high of 38°F and a normal low of 10°F. The warmest is July (90°F by day, 52°F at night).
Does it snow in Wyola?
Yes. NOAA publishes no 1991-2020 snowfall normal for Wyola's NOAA station; the nearest record that keeps one, Dayton (18 miles away), records 68 inches of snow in a normal year.
What is the rainiest month in Wyola?
May, with 3.85 in of precipitation in a normal year; the driest is January with 0.39 in.
What plant hardiness zone is Wyola in?
The USDA's 2023 map puts Wyola in zone 4b in ZIP code 59089, the nearest ZIP area.
How late can frost come in Wyola?
In half of years the last 32°F night comes after May 21; in one year in ten it comes after June 2. Waiting until June 2 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Montana climateThe statewide normals and every place in the state
- Dayton, WY18 miles from this station, 43.9°F a year
- Burgess Junction, WY25 miles from this station, 34.5°F a year
- Yellowtail Dam, MT29 miles from this station, 49.4°F a year
- Sheridan, WY32 miles from this station, 45.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made