Mizpah (4 mi NNW), Montana climate: Climate normals at a NOAA weather station
Mizpah (4 mi NNW)'s normal year runs from 6°F January nights to 91°F July afternoons, with 14.5 inches of precipitation and 30 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.8°C, January lows of −14°C, July highs of 33°C, 369 mm of precipitation a year.
- NOAA stationMizpah (4 mi NNW)
- Station IDUSC00245754
- Location46.29°N 105.29°W
- Elevation2,480 ft (756 m)
On October 23, the normal high in Mizpah (4 mi NNW) is 58°F and the normal low 27°F, and the chance of measurable rain or snow is 22%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Mizpah (4 mi NNW).
- Jan 33° 6°
- Feb 37° 11°
- Mar 50° 21°
- Apr 61° 31°
- May 71° 41°
- Jun 81° 50°
- Jul 91° 56°
- Aug 91° 53°
- Sep 79° 43°
- Oct 62° 30°
- Nov 46° 18°
- Dec 35° 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 at Mizpah (4 mi NNW) each month?
July is the warmest month, with normal highs of 91°F; January the coldest, with normal lows of 6°F. The most precipitation falls in May (2.92 in), the least in December (0.41 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 33°F | 6°F | 19.4°F | 0.44 | 5.6 | 6 | <1 | 31 | 9 h |
| February | 37°F | 11°F | 23.7°F | 0.48 | 5.0 | 6 | <1 | 27 | 10 h 20 min |
| March | 50°F | 21°F | 35.4°F | 0.70 | 5.4 | 6 | <1 | 27 | 11 h 50 min |
| April | 61°F | 31°F | 46.1°F | 1.65 | 2.2 | 8 | <1 | 16 | 13 h 30 min |
| May | 71°F | 41°F | 55.8°F | 2.92 | 0.8 | 11 | 1 | 6 | 15 h |
| June | 81°F | 50°F | 65.6°F | 2.31 | 0.0 | 10 | 5 | <1 | 15 h 50 min |
| July | 91°F | 56°F | 73.5°F | 1.78 | 0.0 | 8 | 18 | <1 | 15 h 30 min |
| August | 91°F | 53°F | 72.0°F | 1.02 | 0.0 | 6 | 18 | <1 | 14 h 10 min |
| September | 79°F | 43°F | 61.0°F | 1.26 | 0.1 | 6 | 6 | 5 | 12 h 40 min |
| October | 62°F | 30°F | 46.2°F | 1.04 | 1.6 | 7 | <1 | 19 | 11 h |
| November | 46°F | 18°F | 32.3°F | 0.50 | 3.7 | 6 | <1 | 28 | 9 h 30 min |
| December | 35°F | 9°F | 21.9°F | 0.41 | 5.5 | 6 | <1 | 31 | 8 h 40 min |
| Year (annual) | 62°F | 31°F | 46.1°F | 14.51 | 29.9 | 87 | 47 | 191 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −14°C | −7.0°C | 11 mm | 14 cm |
| February | 3°C | −12°C | −4.6°C | 12 mm | 13 cm |
| March | 10°C | −6°C | 1.9°C | 18 mm | 14 cm |
| April | 16°C | −1°C | 7.8°C | 42 mm | 6 cm |
| May | 22°C | 5°C | 13.2°C | 74 mm | 2 cm |
| June | 27°C | 10°C | 18.7°C | 59 mm | 0 cm |
| July | 33°C | 13°C | 23.1°C | 45 mm | 0 cm |
| August | 33°C | 12°C | 22.2°C | 26 mm | 0 cm |
| September | 26°C | 6°C | 16.1°C | 32 mm | 0 cm |
| October | 17°C | −1°C | 7.9°C | 26 mm | 4 cm |
| November | 8°C | −8°C | 0.2°C | 13 mm | 9 cm |
| December | 2°C | −13°C | −5.6°C | 10 mm | 14 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00245754; 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 Mizpah (4 mi NNW)?
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 USC00245754.
When is the last frost at Mizpah (4 mi NNW)?
In Mizpah (4 mi NNW), the last spring frost (32°F) comes after May 22 in half of years and after June 7 in one year in ten; the first autumn frost comes before September 15 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 221 year in 10 after June 7; 9 in 10 after May 9
- First autumn frost, half of years before
- September 151 year in 10 before September 2; 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 137 days.
A hard freeze (28°F) comes after May 11 in half of springs and before September 25 in half of autumns.
By the USDA's method, the average of each year's coldest night over 1991-2020, the station is in plant hardiness zone 3b: the coldest night of a typical year reaches −32°F (26 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 USC00245754; 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 Mizpah (4 mi NNW)?
In a normal year in Mizpah (4 mi NNW), 47 days a year reach 90°F (8 of them 100°F or more), 191 nights fall to 32°F or colder and 87 days bring measurable precipitation.
- Days at 90°F or more
- 47a normal year
- Days at 100°F or more
- 8a normal year
- Nights at 32°F or colder
- 191a normal year
- Days that stay below freezing
- 45high of 32°F or less
- Days with 0.01 inch of precipitation
- 87a normal year
- Days with 1 inch of snow or more
- 12a normal year
The highest temperature in this station's record (since 1960) is 115°F, on July 12, 2026; the lowest is −49°F, on December 22, 1989.
The wettest calendar year on that record is 2011, with 21.62 in; the snowiest season is 1966–67, with 58.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00245754; records: ACIS (NOAA Regional Climate Centers), station USC00245754. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Mizpah (4 mi NNW)?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds at Mizpah (4 mi NNW), 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 many heating and cooling degree days does Mizpah (4 mi NNW) record?
A normal year at Mizpah (4 mi NNW) brings 7,541 heating degree days, 40% more than the median U.S. place (5,373), and 682 cooling degree days, 25% 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 2,567 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,412 | 0 |
| February | 1,155 | 0 |
| March | 919 | 0 |
| April | 568 | 1 |
| May | 299 | 15 |
| June | 79 | 97 |
| July | 11 | 273 |
| August | 24 | 239 |
| September | 176 | 56 |
| October | 583 | 2 |
| November | 979 | 0 |
| December | 1,336 | 0 |
| Year (annual) | 7,541 | 682 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00245754. 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 Mizpah (4 mi NNW) been warmer than normal?
2025 averaged 46.9°F, 0.8°F above the 1991-2020 normal of 46.1°F. 2 of the 2 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 47.2°F | +1.1°F | 9.71 | 11.6 |
| 2025 | 46.9°F | +0.8°F | 21.22 | – |
Over 53 complete years from 1961 to 2025, the station's annual mean temperature rose at a fitted 5.1°F per century (+0.28°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00245754; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Mizpah (4 mi NNW)'s climate compare?
Mizpah (4 mi NNW) is warmer than 113 of the 141 places with their own NOAA record in Montana, and wetter than 57. Across the 7,247 U.S. stations with normals, its annual mean of 46.1°F is warmer than 24%.
In the Köppen classification computed from these normals, Mizpah (4 mi NNW) 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 Mizpah (4 mi NNW)'s climate
What is the coldest month at Mizpah (4 mi NNW)?
January, with a normal high of 33°F and a normal low of 6°F. The warmest is July (91°F by day, 56°F at night).
Does it snow at Mizpah (4 mi NNW)?
Yes: 30 inches in a normal year, falling on 23 days with 0.1 inch or more, the most in January (5.6 inches).
What is the rainiest month at Mizpah (4 mi NNW)?
May, with 2.92 in of precipitation in a normal year; the driest is December with 0.41 in.
What plant hardiness zone is Mizpah (4 mi NNW) in?
By the same method at the station, the coldest night of a typical year reaches −32°F (26 years, 1991-2020): zone 3b.
How late can frost come at Mizpah (4 mi NNW)?
In half of years the last 32°F night comes after May 22; in one year in ten it comes after June 7. Waiting until June 7 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Montana climateThe statewide normals and every place in the state
- Miles City, MT30 miles from this station, 46.1°F a year
- Powderville (8 mi NNE), MT32 miles from this station, 47.0°F a year
- Terry, MT35 miles from this station, 45.3°F a year
- Mildred (5 mi N), MT37 miles from this station, 44.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made