Nye, Montana climate: Normal weather by month, frost dates and records
Nye's normal year runs from 19°F December nights to 83°F July afternoons, with 17.9 inches of precipitation and 70 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.3°C, December lows of −7°C, July highs of 28°C, 455 mm of precipitation a year.
- NOAA stationNye #2
- Station IDUSC00246190
- Location45.44°N 109.81°W
- Elevation4,840 ft (1,475 m)
- Population (census place)56
On October 22, the normal high in Nye is 56°F and the normal low 32°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 Nye.
- Jan 40° 19°
- Feb 40° 19°
- Mar 48° 25°
- Apr 55° 30°
- May 63° 37°
- Jun 72° 43°
- Jul 83° 48°
- Aug 83° 47°
- Sep 73° 40°
- Oct 59° 33°
- Nov 46° 26°
- Dec 38° 19°
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 Nye each month?
July is the warmest month, with normal highs of 83°F; December the coldest, with normal lows of 19°F. The most precipitation falls in May (3.31 in), the least in January (0.45 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 40°F | 19°F | 29.4°F | 0.45 | 7.2 | 4 | <1 | 24 | 9 h |
| February | 40°F | 19°F | 29.3°F | 0.84 | 9.9 | 5 | <1 | 23 | 10 h 20 min |
| March | 48°F | 25°F | 36.3°F | 1.07 | 10.0 | 7 | <1 | 23 | 11 h 50 min |
| April | 55°F | 30°F | 42.3°F | 1.81 | 13.1 | 9 | <1 | 18 | 13 h 30 min |
| May | 63°F | 37°F | 50.1°F | 3.31 | 2.4 | 12 | <1 | 8 | 14 h 50 min |
| June | 72°F | 43°F | 57.8°F | 3.05 | 0.1 | 12 | 1 | 1 | 15 h 40 min |
| July | 83°F | 48°F | 65.3°F | 1.62 | 0.0 | 10 | 9 | <1 | 15 h 20 min |
| August | 83°F | 47°F | 64.8°F | 1.15 | 0.0 | 8 | 7 | <1 | 14 h 10 min |
| September | 73°F | 40°F | 56.7°F | 1.44 | 0.2 | 7 | 2 | 4 | 12 h 40 min |
| October | 59°F | 33°F | 46.0°F | 1.67 | 7.5 | 7 | <1 | 15 | 11 h |
| November | 46°F | 26°F | 35.7°F | 0.83 | 9.9 | 6 | <1 | 20 | 9 h 30 min |
| December | 38°F | 19°F | 28.2°F | 0.66 | 9.4 | 5 | <1 | 25 | 8 h 40 min |
| Year (annual) | 58°F | 32°F | 45.2°F | 17.90 | 69.7 | 92 | 18 | 161 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 4°C | −7°C | −1.4°C | 11 mm | 18 cm |
| February | 5°C | −7°C | −1.5°C | 21 mm | 25 cm |
| March | 9°C | −4°C | 2.4°C | 27 mm | 25 cm |
| April | 13°C | −1°C | 5.7°C | 46 mm | 33 cm |
| May | 17°C | 3°C | 10.1°C | 84 mm | 6 cm |
| June | 22°C | 6°C | 14.3°C | 77 mm | 0 cm |
| July | 28°C | 9°C | 18.5°C | 41 mm | 0 cm |
| August | 28°C | 8°C | 18.2°C | 29 mm | 0 cm |
| September | 23°C | 5°C | 13.7°C | 37 mm | 1 cm |
| October | 15°C | 1°C | 7.8°C | 42 mm | 19 cm |
| November | 8°C | −3°C | 2.1°C | 21 mm | 25 cm |
| December | 3°C | −7°C | −2.1°C | 17 mm | 24 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00246190; 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 Nye?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, September has the fewest days with rain (7).
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 USC00246190.
When is the last frost in Nye?
In Nye, the last spring frost (32°F) comes after June 1 in half of years and after June 21 in one year in ten; the first autumn frost comes before September 11 in half of years and before August 25 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
- June 11 year in 10 after June 21; 9 in 10 after May 15
- First autumn frost, half of years before
- September 111 year in 10 before August 25; 9 in 10 before September 26
NOAA puts the median frost-free season at 100 days, and the season without a hard freeze (28°F) at 130 days.
A hard freeze (28°F) comes after May 15 in half of springs and before September 25 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Nye in zone 5a in ZIP code 59061, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Nye's NOAA station is in zone 4b: the coldest night of a typical year reaches −23°F (18 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 USC00246190; 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 Nye?
In a normal year in Nye, 18 days a year reach 90°F, 161 nights fall to 32°F or colder and 92 days bring measurable precipitation.
- Days at 90°F or more
- 18a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 161a normal year
- Days that stay below freezing
- 28high of 32°F or less
- Days with 0.01 inch of precipitation
- 92a normal year
- Days with 1 inch of snow or more
- 22a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00246190.
How sunny is Nye?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Nye, 4.1 kWh per square metre a day. July is the sunniest month (85%) and April the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 1.9 |
| February | 76% | 2.8 |
| March | 70% | 3.8 |
| April | 66% | 4.7 |
| May | 69% | 5.7 |
| June | 77% | 6.7 |
| July | 85% | 7.1 |
| August | 84% | 6.0 |
| September | 80% | 4.6 |
| October | 72% | 2.9 |
| November | 70% | 1.9 |
| December | 67% | 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 Nye need?
A normal year in Nye brings 7,388 heating degree days, 38% more than the median U.S. place (5,373), and 183 cooling degree days, 80% 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 1,652 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,102 | 0 |
| February | 998 | 0 |
| March | 890 | 0 |
| April | 681 | 0 |
| May | 465 | 2 |
| June | 227 | 11 |
| July | 73 | 81 |
| August | 77 | 72 |
| September | 265 | 16 |
| October | 591 | 2 |
| November | 879 | 0 |
| December | 1,141 | 0 |
| Year (annual) | 7,388 | 183 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00246190. 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 Nye's climate compare?
Nye is warmer than 96 of the other 140 places with their own NOAA record in Montana, and wetter than 108. Across the 7,247 U.S. stations with normals, its annual mean of 45.2°F is warmer than 20%.
In the Köppen classification computed from these normals, Nye 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.
Which places near Nye share this climate record?
Fishtail 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.
- Fishtail, MT79 people · 15 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 Nye's climate
What is the coldest month in Nye?
December, with a normal high of 38°F and a normal low of 19°F. The warmest is July (83°F by day, 48°F at night).
Does it snow in Nye?
Yes: 70 inches in a normal year, falling on 26 days with 0.1 inch or more, the most in April (13.1 inches).
What is the rainiest month in Nye?
May, with 3.31 in of precipitation in a normal year; the driest is January with 0.45 in.
What plant hardiness zone is Nye in?
The USDA's 2023 map puts Nye in zone 5a in ZIP code 59061, the nearest ZIP area. By the same method at Nye's NOAA station, the coldest night of a typical year reaches −23°F (18 years, 1991-2020): zone 4b.
How late can frost come in Nye?
In half of years the last 32°F night comes after June 1; in one year in ten it comes after June 21. Waiting until June 21 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Montana climateThe statewide normals and every place in the state
- Mystic Lake, MT14 miles from this station, 41.6°F a year
- Big Timber, MT29 miles from this station, 47.0°F a year
- Columbus, MT30 miles from this station, 44.4°F a year
- Silver Gate, MT30 miles from this station, 34.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made