Yaak, Montana climate: Normal weather by month, frost dates and records
Yaak's normal year runs from 15°F December nights to 81°F July afternoons, with 22.8 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.0°C, December lows of −10°C, July highs of 27°C, 578 mm of precipitation a year.
- NOAA stationYaak (9 mi NNE)
- Station IDUSC00249187
- Location48.95°N 115.63°W
- Elevation3,085 ft (940 m)
- Population (census place)310
On October 23, the normal high in Yaak is 48°F and the normal low 26°F, and the chance of measurable rain or snow is 37%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Yaak.
- Jan 29° 14°
- Feb 36° 14°
- Mar 44° 22°
- Apr 54° 27°
- May 65° 35°
- Jun 71° 41°
- Jul 81° 43°
- Aug 81° 42°
- Sep 70° 35°
- Oct 53° 28°
- Nov 36° 22°
- Dec 27° 15°
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 Yaak each month?
July is the warmest month, with normal highs of 81°F; December the coldest, with normal lows of 15°F. The most precipitation falls in November (2.75 in), the least in August (0.93 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 29°F | 14°F | 21.7°F | 2.27 | 14 | <1 | 31 | 8 h 40 min |
| February | 36°F | 14°F | 25.0°F | 1.73 | 11 | <1 | 28 | 10 h 10 min |
| March | 44°F | 22°F | 33.2°F | 2.27 | 14 | <1 | 30 | 11 h 50 min |
| April | 54°F | 27°F | 40.7°F | 1.23 | 10 | <1 | 25 | 13 h 40 min |
| May | 65°F | 35°F | 50.0°F | 2.18 | 10 | <1 | 14 | 15 h 10 min |
| June | 71°F | 41°F | 56.0°F | 2.54 | 12 | 1 | 3 | 16 h 10 min |
| July | 81°F | 43°F | 62.1°F | 1.17 | 6 | 7 | 1 | 15 h 50 min |
| August | 81°F | 42°F | 61.6°F | 0.93 | 5 | 5 | 3 | 14 h 30 min |
| September | 70°F | 35°F | 52.6°F | 1.31 | 7 | 1 | 12 | 12 h 40 min |
| October | 53°F | 28°F | 40.2°F | 1.70 | 11 | <1 | 22 | 10 h 50 min |
| November | 36°F | 22°F | 28.6°F | 2.75 | 14 | <1 | 28 | 9 h 10 min |
| December | 27°F | 15°F | 20.7°F | 2.69 | 14 | <1 | 31 | 8 h 20 min |
| Year (annual) | 54°F | 28°F | 41.0°F | 22.77 | 128 | 13 | 226 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −1°C | −10°C | −5.7°C | 58 mm |
| February | 2°C | −10°C | −3.9°C | 44 mm |
| March | 7°C | −6°C | 0.7°C | 58 mm |
| April | 12°C | −3°C | 4.8°C | 31 mm |
| May | 18°C | 2°C | 10.0°C | 55 mm |
| June | 22°C | 5°C | 13.3°C | 65 mm |
| July | 27°C | 6°C | 16.7°C | 30 mm |
| August | 27°C | 6°C | 16.4°C | 24 mm |
| September | 21°C | 2°C | 11.4°C | 33 mm |
| October | 11°C | −2°C | 4.6°C | 43 mm |
| November | 2°C | −6°C | −1.9°C | 70 mm |
| December | −3°C | −10°C | −6.3°C | 68 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00249187; 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 Yaak?
Normal highs sit between 65°F and 85°F in 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 USC00249187.
How hot and how cold does it get in Yaak?
In a normal year in Yaak, 13 days a year reach 90°F, 226 nights fall to 32°F or colder and 128 days bring measurable precipitation.
- Days at 90°F or more
- 13a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 226a normal year
- Days that stay below freezing
- 54high of 32°F or less
- Days with 0.01 inch of precipitation
- 128a normal year
The highest temperature in this station's record (since 1998) is 104°F, on August 10, 2018; the lowest is −46°F, on January 13, 2024.
The wettest calendar year on that record is 2012, with 33.28 in; the snowiest season is 2007–08, with 148.4 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00249187; records: ACIS (NOAA Regional Climate Centers), station USC00249187. Records use complete months only; a month missing more than three days is left out.
How sunny is Yaak?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Yaak, 3.6 kWh per square metre a day. July is the sunniest month (85%) and December the cloudiest (50%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 54% | 1.1 |
| February | 62% | 2.0 |
| March | 62% | 3.1 |
| April | 65% | 4.4 |
| May | 68% | 5.5 |
| June | 69% | 6.0 |
| July | 85% | 7.1 |
| August | 83% | 5.8 |
| September | 75% | 4.0 |
| October | 65% | 2.4 |
| November | 53% | 1.2 |
| December | 50% | 0.8 |
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 Yaak need?
A normal year in Yaak brings 8,782 heating degree days, 63% more than the median U.S. place (5,373), and 61 cooling degree days, 93% fewer than the median (908). Nine months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,140 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,344 | 0 |
| February | 1,121 | 0 |
| March | 988 | 0 |
| April | 729 | 0 |
| May | 467 | 0 |
| June | 274 | 4 |
| July | 119 | 30 |
| August | 132 | 25 |
| September | 373 | 1 |
| October | 769 | 0 |
| November | 1,092 | 0 |
| December | 1,375 | 0 |
| Year (annual) | 8,782 | 61 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00249187. 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 Yaak been warmer than normal lately?
2025 averaged 43.3°F, 2.3°F above the 1991-2020 normal of 41.0°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 42.0°F | +1.0°F | – |
| 2022 | 40.1°F | −0.9°F | 21.71 |
| 2023 | 42.9°F | +1.9°F | – |
| 2024 | 43.4°F | +2.4°F | – |
| 2025 | 43.3°F | +2.3°F | 26.34 |
Source: observed years: ACIS, station USC00249187. A year counts only with all twelve months complete.
How does Yaak's climate compare?
Yaak is warmer than 19 of the other 140 places with their own NOAA record in Montana, and wetter than 122. Across the 7,247 U.S. stations with normals, its annual mean of 41.0°F is warmer than 7%.
In the Köppen classification computed from these normals, Yaak is Dfb: continental, no dry season, 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.
Questions about Yaak's climate
What is the coldest month in Yaak?
December, with a normal high of 27°F and a normal low of 15°F. The warmest is July (81°F by day, 43°F at night).
What is the rainiest month in Yaak?
November, with 2.75 in of precipitation in a normal year; the driest is August with 0.93 in.
What plant hardiness zone is Yaak in?
The USDA's 2023 map puts Yaak in zone 6a in ZIP code 59935, the nearest ZIP area. By the same method at Yaak's NOAA station, the coldest night of a typical year reaches −24°F (17 years, 1991-2020): zone 4b.
Nearby and next
- Montana climateThe statewide normals and every place in the state
- Eureka, MT26 miles from this station, 47.0°F a year
- Troy, MT35 miles from this station, 46.8°F a year
- Fortine, MT35 miles from this station, 43.9°F a year
- Bonners Ferry, ID36 miles from this station, 47.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made