Powderville (8 mi NNE), Montana climate: Climate normals at a NOAA weather station
Powderville (8 mi NNE)'s normal year runs from 10°F January nights to 90°F July afternoons, with 15.0 inches of precipitation and 30 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.3°C, January lows of −12°C, July highs of 32°C, 382 mm of precipitation a year.
- NOAA stationPowderville (8 mi NNE)
- Station IDUSC00246691
- Location45.85°N 105.03°W
- Elevation2,800 ft (853 m)
On October 22, the normal high in Powderville (8 mi NNE) is 57°F and the normal low 31°F, and the chance of measurable rain or snow is 20%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Powderville (8 mi NNE).
- Jan 32° 10°
- Feb 36° 14°
- Mar 49° 23°
- Apr 59° 33°
- May 70° 43°
- Jun 80° 52°
- Jul 90° 59°
- Aug 89° 57°
- Sep 78° 46°
- Oct 61° 34°
- Nov 46° 21°
- Dec 35° 12°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Powderville (8 mi NNE) 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 (2.84 in), the least in December (0.35 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 32°F | 10°F | 21.3°F | 0.43 | 5.4 | 6 | <1 | 30 | 9 h |
| February | 36°F | 14°F | 25.1°F | 0.51 | 5.8 | 6 | <1 | 27 | 10 h 20 min |
| March | 49°F | 23°F | 35.8°F | 0.74 | 5.1 | 6 | <1 | 26 | 11 h 50 min |
| April | 59°F | 33°F | 46.2°F | 1.64 | 2.6 | 9 | <1 | 15 | 13 h 30 min |
| May | 70°F | 43°F | 56.3°F | 2.84 | 1.1 | 10 | 1 | 4 | 14 h 50 min |
| June | 80°F | 52°F | 66.0°F | 2.68 | 0.0 | 10 | 4 | <1 | 15 h 40 min |
| July | 90°F | 59°F | 74.4°F | 1.72 | 0.0 | 7 | 18 | <1 | 15 h 20 min |
| August | 89°F | 57°F | 72.9°F | 1.23 | 0.0 | 5 | 17 | <1 | 14 h 10 min |
| September | 78°F | 46°F | 61.8°F | 1.25 | 0.0 | 6 | 5 | 3 | 12 h 40 min |
| October | 61°F | 34°F | 47.2°F | 1.16 | 1.7 | 7 | <1 | 15 | 11 h |
| November | 46°F | 21°F | 33.5°F | 0.47 | 3.3 | 5 | <1 | 27 | 9 h 30 min |
| December | 35°F | 12°F | 23.5°F | 0.35 | 4.9 | 5 | <1 | 31 | 8 h 40 min |
| Year (annual) | 60°F | 34°F | 47.0°F | 15.02 | 29.9 | 81 | 45 | 179 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −12°C | −5.9°C | 11 mm | 14 cm |
| February | 2°C | −10°C | −3.8°C | 13 mm | 15 cm |
| March | 9°C | −5°C | 2.1°C | 19 mm | 13 cm |
| April | 15°C | 1°C | 7.9°C | 42 mm | 7 cm |
| May | 21°C | 6°C | 13.5°C | 72 mm | 3 cm |
| June | 27°C | 11°C | 18.9°C | 68 mm | 0 cm |
| July | 32°C | 15°C | 23.6°C | 44 mm | 0 cm |
| August | 32°C | 14°C | 22.7°C | 31 mm | 0 cm |
| September | 25°C | 8°C | 16.6°C | 32 mm | 0 cm |
| October | 16°C | 1°C | 8.4°C | 29 mm | 4 cm |
| November | 8°C | −6°C | 0.8°C | 12 mm | 8 cm |
| December | 2°C | −11°C | −4.7°C | 9 mm | 12 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00246691; 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.
Which months are mildest at Powderville (8 mi NNE)?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September has the fewest days with rain (6).
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 USC00246691.
When is the last frost at Powderville (8 mi NNE)?
In Powderville (8 mi NNE), the last spring frost (32°F) comes after May 13 in half of years and after May 31 in one year in ten; the first autumn frost comes before September 25 in half of years and before September 6 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 131 year in 10 after May 31; 9 in 10 after May 1
- First autumn frost, half of years before
- September 251 year in 10 before September 6; 9 in 10 before October 9
NOAA puts the median frost-free season at 132 days, and the season without a hard freeze (28°F) at 152 days.
A hard freeze (28°F) comes after May 2 in half of springs and before October 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Powderville (8 mi NNE) in zone 4b in ZIP code 59345, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 4a: the coldest night of a typical year reaches −27°F (29 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Montana · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00246691; 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 at Powderville (8 mi NNE)?
In a normal year in Powderville (8 mi NNE), 45 days a year reach 90°F (6 of them 100°F or more), 179 nights fall to 32°F or colder and 81 days bring measurable precipitation.
- Days at 90°F or more
- 45a normal year
- Days at 100°F or more
- 6a normal year
- Nights at 32°F or colder
- 179a normal year
- Days that stay below freezing
- 44high of 32°F or less
- Days with 0.01 inch of precipitation
- 81a normal year
- Days with 1 inch of snow or more
- 12a normal year
The highest temperature in this station's record (since 1964) is 114°F, on July 12, 2026; the lowest is −45°F, on December 22, 1989.
The wettest calendar year on that record is 2011, with 21.23 in; the snowiest season is 2017–18, with 70.4 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00246691; records: ACIS (NOAA Regional Climate Centers), station USC00246691. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Powderville (8 mi NNE)?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds at Powderville (8 mi NNE), 4.2 kWh per square metre a day. July is the sunniest month (89%) and December the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 77% | 1.9 |
| February | 77% | 2.9 |
| March | 73% | 3.9 |
| April | 71% | 4.9 |
| May | 73% | 5.9 |
| June | 81% | 6.9 |
| July | 89% | 7.3 |
| August | 87% | 6.1 |
| September | 82% | 4.6 |
| October | 74% | 3.0 |
| November | 74% | 2.0 |
| December | 71% | 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 many heating and cooling degree days does Powderville (8 mi NNE) record?
A normal year at Powderville (8 mi NNE) brings 7,284 heating degree days, 36% more than the median U.S. place (5,373), and 759 cooling degree days, 16% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,704 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,356 | 0 |
| February | 1,119 | 0 |
| March | 905 | 0 |
| April | 565 | 1 |
| May | 287 | 17 |
| June | 73 | 105 |
| July | 9 | 301 |
| August | 20 | 264 |
| September | 164 | 68 |
| October | 555 | 4 |
| November | 944 | 0 |
| December | 1,288 | 0 |
| Year (annual) | 7,284 | 759 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00246691. 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.
Have recent years at Powderville (8 mi NNE) been warmer than normal?
2025 averaged 48.6°F, 1.6°F above the 1991-2020 normal of 47.0°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 49.1°F | +2.1°F | 12.89 | 39.0 |
| 2022 | 46.5°F | −0.5°F | 14.68 | 62.7 |
| 2023 | 48.8°F | +1.8°F | 13.72 | 31.0 |
| 2024 | 49.8°F | +2.8°F | 14.20 | 24.0 |
| 2025 | 48.6°F | +1.6°F | 19.58 | 31.8 |
Over 41 complete years from 1967 to 2025, the station's annual mean temperature rose at a fitted 5.5°F per century (+0.31°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00246691; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Powderville (8 mi NNE)'s climate compare?
Powderville (8 mi NNE) is warmer than 128 of the 141 places with their own NOAA record in Montana, and wetter than 73. Across the 7,247 U.S. stations with normals, its annual mean of 47.0°F is warmer than 28%.
In the Köppen classification computed from these normals, Powderville (8 mi NNE) 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.
Questions about Powderville (8 mi NNE)'s climate
What is the coldest month at Powderville (8 mi NNE)?
January, with a normal high of 32°F and a normal low of 10°F. The warmest is July (90°F by day, 59°F at night).
Does it snow at Powderville (8 mi NNE)?
Yes: 30 inches in a normal year, falling on 20 days with 0.1 inch or more, the most in February (5.8 inches).
What is the rainiest month at Powderville (8 mi NNE)?
May, with 2.84 in of precipitation in a normal year; the driest is December with 0.35 in.
What plant hardiness zone is Powderville (8 mi NNE) in?
The USDA's 2023 map puts Powderville (8 mi NNE) in zone 4b in ZIP code 59345, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −27°F (29 years, 1991-2020): zone 4a.
How late can frost come at Powderville (8 mi NNE)?
In half of years the last 32°F night comes after May 13; in one year in ten it comes after May 31. Waiting until May 31 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Montana climateThe statewide normals and every place in the state
- Ekalaka, MT24 miles from this station, 45.3°F a year
- Mizpah (4 mi NNW), MT32 miles from this station, 46.1°F a year
- Broadus, MT34 miles from this station, 48.2°F a year
- Ridgeway (1 mi S), MT37 miles from this station, 44.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made