Mountain View, Wyoming climate: Normal weather by month, frost dates and records
Mountain View's normal year runs from 11°F December nights to 80°F July afternoons, with 11.0 inches of precipitation and 64 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 4.9°C, December lows of −12°C, July highs of 27°C, 280 mm of precipitation a year.
- NOAA stationMountain View
- Station IDUSC00486555
- Location41.27°N 110.34°W
- Elevation6,800 ft (2,073 m)
- Population1,268
On October 14, the normal high in Mountain View is 58°F and the normal low 29°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 Mountain View.
- Jan 32° 11°
- Feb 34° 11°
- Mar 44° 20°
- Apr 52° 25°
- May 63° 33°
- Jun 73° 40°
- Jul 80° 47°
- Aug 78° 45°
- Sep 70° 37°
- Oct 57° 28°
- Nov 41° 17°
- Dec 31° 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 Mountain View each month?
July is the warmest month, with normal highs of 80°F; December the coldest, with normal lows of 11°F. The most precipitation falls in May (1.36 in), the least in February (0.56 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 32°F | 11°F | 21.5°F | 0.61 | 8.9 | 6 | <1 | 30 | 9 h 30 min |
| February | 34°F | 11°F | 22.4°F | 0.56 | 9.0 | 6 | <1 | 28 | 10 h 40 min |
| March | 44°F | 20°F | 31.7°F | 0.76 | 9.4 | 7 | <1 | 29 | 11 h 50 min |
| April | 52°F | 25°F | 38.7°F | 1.10 | 7.5 | 8 | <1 | 23 | 13 h 20 min |
| May | 63°F | 33°F | 47.7°F | 1.36 | 3.0 | 9 | <1 | 11 | 14 h 30 min |
| June | 73°F | 40°F | 56.3°F | 0.91 | 0.2 | 6 | <1 | 2 | 15 h 10 min |
| July | 80°F | 47°F | 63.2°F | 1.10 | 0.0 | 7 | 1 | <1 | 14 h 50 min |
| August | 78°F | 45°F | 61.7°F | 0.82 | 0.0 | 8 | <1 | <1 | 13 h 50 min |
| September | 70°F | 37°F | 53.6°F | 1.28 | 1.0 | 7 | <1 | 5 | 12 h 30 min |
| October | 57°F | 28°F | 42.4°F | 0.98 | 5.6 | 7 | <1 | 20 | 11 h 10 min |
| November | 41°F | 17°F | 29.2°F | 0.76 | 9.7 | 6 | <1 | 28 | 9 h 50 min |
| December | 31°F | 11°F | 20.9°F | 0.79 | 9.5 | 7 | <1 | 30 | 9 h 10 min |
| Year (annual) | 55°F | 27°F | 40.8°F | 11.03 | 63.8 | 82 | 1 | 206 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −12°C | −5.8°C | 15 mm | 23 cm |
| February | 1°C | −12°C | −5.3°C | 14 mm | 23 cm |
| March | 7°C | −7°C | −0.2°C | 19 mm | 24 cm |
| April | 11°C | −4°C | 3.7°C | 28 mm | 19 cm |
| May | 17°C | 0°C | 8.7°C | 35 mm | 8 cm |
| June | 23°C | 4°C | 13.5°C | 23 mm | 1 cm |
| July | 27°C | 8°C | 17.3°C | 28 mm | 0 cm |
| August | 26°C | 7°C | 16.5°C | 21 mm | 0 cm |
| September | 21°C | 3°C | 12.0°C | 33 mm | 3 cm |
| October | 14°C | −2°C | 5.8°C | 25 mm | 14 cm |
| November | 5°C | −8°C | −1.6°C | 19 mm | 25 cm |
| December | 0°C | −12°C | −6.2°C | 20 mm | 24 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00486555; 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 Mountain View?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, June 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 USC00486555.
When is the last frost in Mountain View?
In Mountain View, the last spring frost (32°F) comes after June 14 in half of years and after July 1 in one year in ten; the first autumn frost comes before September 9 in half of years and before August 23 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 141 year in 10 after July 1; 9 in 10 after May 31
- First autumn frost, half of years before
- September 91 year in 10 before August 23; 9 in 10 before September 21
NOAA puts the median frost-free season at 84 days, and the season without a hard freeze (28°F) at 109 days.
A hard freeze (28°F) comes after May 30 in half of springs and before September 20 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Mountain View in zone 5b in ZIP code 82939, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Mountain View's NOAA station is in zone 5b: the coldest night of a typical year reaches −14°F (23 complete years).
Frost dates for every NOAA station in Wyoming · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00486555; 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 Mountain View?
In a normal year in Mountain View, 1 day a year reaches 90°F, 206 nights fall to 32°F or colder and 82 days bring measurable precipitation.
- Days at 90°F or more
- 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 206a normal year
- Days that stay below freezing
- 49high of 32°F or less
- Days with 0.01 inch of precipitation
- 82a normal year
- Days with 1 inch of snow or more
- 23a normal year
The highest temperature in this station's record (since 1966) is 94°F, on July 13, 2002; the lowest is −41°F, on December 21, 1990.
The wettest calendar year on that record is 1997, with 13.38 in; the snowiest season is 2010–11, with 119.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00486555; records: ACIS (NOAA Regional Climate Centers), station USC00486555. Records use complete months only; a month missing more than three days is left out.
How sunny is Mountain View?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Mountain View, 4.8 kWh per square metre a day. June is the sunniest month (86%) and December the cloudiest (70%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 74% | 2.3 |
| February | 74% | 3.2 |
| March | 74% | 4.4 |
| April | 75% | 5.6 |
| May | 77% | 6.6 |
| June | 86% | 7.8 |
| July | 86% | 7.4 |
| August | 85% | 6.5 |
| September | 85% | 5.3 |
| October | 81% | 3.7 |
| November | 75% | 2.5 |
| December | 70% | 1.9 |
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 Mountain View need?
A normal year in Mountain View brings 8,848 heating degree days, 65% more than the median U.S. place (5,373), and 45 cooling degree days, 95% 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 1,223 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,350 | 0 |
| February | 1,193 | 0 |
| March | 1,034 | 0 |
| April | 789 | 0 |
| May | 537 | 0 |
| June | 265 | 4 |
| July | 82 | 26 |
| August | 118 | 14 |
| September | 343 | 1 |
| October | 701 | 0 |
| November | 1,073 | 0 |
| December | 1,365 | 0 |
| Year (annual) | 8,848 | 45 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00486555. 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 Mountain View been warmer than normal lately?
2024 averaged 43.0°F, 2.2°F above the 1991-2020 normal of 40.8°F. 2 of the 2 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 41.2°F | +0.4°F | 8.95 | – |
| 2024 | 43.0°F | +2.2°F | 11.08 | – |
Source: observed years: ACIS, station USC00486555. A year counts only with all twelve months complete.
How does Mountain View's climate compare?
Mountain View is warmer than 17 of the other 70 places with their own NOAA record in Wyoming, and wetter than 24. Across the 7,247 U.S. stations with normals, its annual mean of 40.8°F is warmer than 7%.
In the Köppen classification computed from these normals, Mountain View 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 Mountain View share this climate record?
5 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.
- Lyman, WY2,191 people · 5 mi NE
- Fort Bridger, WY193 people · 5 mi NW
- Urie, WY136 people · 3 mi N
- Robertson, WY78 people · 7 mi SW
- Carter, WY0 people · 13 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 Mountain View's climate
What is the coldest month in Mountain View?
December, with a normal high of 31°F and a normal low of 11°F. The warmest is July (80°F by day, 47°F at night).
Does it snow in Mountain View?
Yes: 64 inches in a normal year, falling on 36 days with 0.1 inch or more, the most in November (9.7 inches).
What is the rainiest month in Mountain View?
May, with 1.36 in of precipitation in a normal year; the driest is February with 0.56 in.
What plant hardiness zone is Mountain View in?
The USDA's 2023 map puts Mountain View in zone 5b in ZIP code 82939, the nearest ZIP area. By the same method at Mountain View's NOAA station, the coldest night of a typical year reaches −14°F (23 years, 1991-2020): zone 5b.
How late can frost come in Mountain View?
In half of years the last 32°F night comes after June 14; in one year in ten it comes after July 1. Waiting until July 1 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Wyoming climateThe statewide normals and every place in the state
- Church Buttes Gas Plant, WY16 miles from this station, 43.2°F a year
- Evanston, WY36 miles from this station, 42.4°F a year
- Manila, UT37 miles from this station, 44.7°F a year
- Buckboard Marina, WY39 miles from this station, 43.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made