Vernon, Utah climate: Normal weather by month, frost dates and records
Vernon's normal year runs from 12°F January nights to 90°F July afternoons, with 10.6 inches of precipitation and 36 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.3°C, January lows of −11°C, July highs of 32°C, 269 mm of precipitation a year.
- NOAA stationVernon
- Station IDUSC00429133
- Location40.10°N 112.44°W
- Elevation5,471 ft (1,668 m)
- Population296
On October 22, the normal high in Vernon is 62°F and the normal low 28°F, and the chance of measurable rain or snow is 15%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Vernon.
- Jan 39° 12°
- Feb 44° 16°
- Mar 52° 24°
- Apr 58° 29°
- May 69° 36°
- Jun 81° 45°
- Jul 90° 53°
- Aug 88° 51°
- Sep 79° 42°
- Oct 64° 30°
- Nov 50° 20°
- Dec 39° 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 in Vernon each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 12°F. The most precipitation falls in May (1.29 in), the least in July (0.70 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 39°F | 12°F | 25.7°F | 0.77 | 8.4 | 6 | <1 | 30 | 9 h 40 min |
| February | 44°F | 16°F | 30.1°F | 0.90 | 9.5 | 6 | <1 | 26 | 10 h 40 min |
| March | 52°F | 24°F | 37.9°F | 1.00 | 3.9 | 6 | <1 | 26 | 11 h 50 min |
| April | 58°F | 29°F | 43.5°F | 1.09 | 2.3 | 7 | <1 | 20 | 13 h 10 min |
| May | 69°F | 36°F | 52.9°F | 1.29 | 0.0 | 8 | 1 | 7 | 14 h 20 min |
| June | 81°F | 45°F | 63.0°F | 0.71 | 0.0 | 4 | 7 | 1 | 15 h |
| July | 90°F | 53°F | 71.5°F | 0.70 | 0.0 | 4 | 21 | <1 | 14 h 50 min |
| August | 88°F | 51°F | 69.7°F | 0.71 | 0.0 | 5 | 16 | <1 | 13 h 50 min |
| September | 79°F | 42°F | 60.3°F | 0.83 | 0.0 | 4 | 3 | 2 | 12 h 30 min |
| October | 64°F | 30°F | 47.4°F | 1.07 | 0.9 | 5 | <1 | 17 | 11 h 10 min |
| November | 50°F | 20°F | 35.2°F | 0.76 | 4.8 | 5 | <1 | 27 | 10 h |
| December | 39°F | 12°F | 25.7°F | 0.77 | 6.6 | 5 | <1 | 30 | 9 h 20 min |
| Year (annual) | 63°F | 31°F | 46.9°F | 10.60 | 36.4 | 64 | 48 | 184 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 4°C | −11°C | −3.5°C | 20 mm | 21 cm |
| February | 7°C | −9°C | −1.1°C | 23 mm | 24 cm |
| March | 11°C | −5°C | 3.3°C | 25 mm | 10 cm |
| April | 15°C | −2°C | 6.4°C | 28 mm | 6 cm |
| May | 21°C | 2°C | 11.6°C | 33 mm | 0 cm |
| June | 27°C | 7°C | 17.2°C | 18 mm | 0 cm |
| July | 32°C | 12°C | 21.9°C | 18 mm | 0 cm |
| August | 31°C | 11°C | 20.9°C | 18 mm | 0 cm |
| September | 26°C | 6°C | 15.7°C | 21 mm | 0 cm |
| October | 18°C | −1°C | 8.6°C | 27 mm | 2 cm |
| November | 10°C | −7°C | 1.8°C | 19 mm | 12 cm |
| December | 4°C | −11°C | −3.5°C | 20 mm | 17 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00429133; 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 Vernon?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, June has the fewest days with rain (4).
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 USC00429133.
When is the last frost in Vernon?
In Vernon, the last spring frost (32°F) comes after June 1 in half of years and after June 19 in one year in ten; the first autumn frost comes before September 20 in half of years and before September 4 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 19; 9 in 10 after May 18
- First autumn frost, half of years before
- September 201 year in 10 before September 4; 9 in 10 before October 3
NOAA puts the median frost-free season at 110 days, and the season without a hard freeze (28°F) at 133 days.
A hard freeze (28°F) comes after May 19 in half of springs and before September 29 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Vernon in zone 6b in ZIP code 84080, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Vernon's NOAA station is in zone 6a: the coldest night of a typical year reaches −9°F (20 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 Utah · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00429133; 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 Vernon?
In a normal year in Vernon, 48 days a year reach 90°F (2 of them 100°F or more), 184 nights fall to 32°F or colder and 64 days bring measurable precipitation.
- Days at 90°F or more
- 48a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 184a normal year
- Days that stay below freezing
- 16high of 32°F or less
- Days with 0.01 inch of precipitation
- 64a normal year
- Days with 1 inch of snow or more
- 14a normal year
The highest temperature in this station's record (since 1953) is 106°F, on June 24, 2007; the lowest is −26°F, on December 23, 1990.
The wettest calendar year on that record is 1983, with 16.66 in; the snowiest season is 2003–04, with 73.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00429133; records: ACIS (NOAA Regional Climate Centers), station USC00429133. Records use complete months only; a month missing more than three days is left out.
How sunny is Vernon?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Vernon, 4.8 kWh per square metre a day. July is the sunniest month (88%) and December the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 2.1 |
| February | 71% | 3.1 |
| March | 75% | 4.4 |
| April | 77% | 5.8 |
| May | 80% | 6.8 |
| June | 88% | 7.8 |
| July | 88% | 7.4 |
| August | 87% | 6.6 |
| September | 87% | 5.4 |
| October | 82% | 3.9 |
| November | 75% | 2.5 |
| December | 66% | 1.8 |
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 Vernon need?
A normal year in Vernon brings 7,045 heating degree days, 31% more than the median U.S. place (5,373), and 473 cooling degree days, 48% 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 2,241 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,218 | 0 |
| February | 977 | 0 |
| March | 840 | 0 |
| April | 643 | 0 |
| May | 383 | 6 |
| June | 126 | 64 |
| July | 10 | 210 |
| August | 18 | 163 |
| September | 171 | 30 |
| October | 547 | 0 |
| November | 894 | 0 |
| December | 1,218 | 0 |
| Year (annual) | 7,045 | 473 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00429133. 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 Vernon been warmer than normal lately?
2025 averaged 48.6°F, 1.7°F above the 1991-2020 normal of 46.9°F. 4 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 50.4°F | +3.5°F | 10.16 | 33.8 |
| 2022 | 48.6°F | +1.7°F | 7.55 | 35.9 |
| 2024 | 47.3°F | +0.4°F | 7.65 | – |
| 2025 | 48.6°F | +1.7°F | 6.12 | – |
Over 35 complete years from 1971 to 2025, the station's annual mean temperature rose at a fitted 8.6°F per century (+0.48°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00429133; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Vernon's climate compare?
Vernon is warmer than 29 of the other 96 places with their own NOAA record in Utah, and wetter than 32. Across the 7,247 U.S. stations with normals, its annual mean of 46.9°F is warmer than 27%.
In the Köppen classification computed from these normals, Vernon 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 Vernon's climate
What is the coldest month in Vernon?
January, with a normal high of 39°F and a normal low of 12°F. The warmest is July (90°F by day, 53°F at night).
Does it snow in Vernon?
Yes: 36 inches in a normal year, falling on 18 days with 0.1 inch or more, the most in February (9.5 inches).
What is the rainiest month in Vernon?
May, with 1.29 in of precipitation in a normal year; the driest is July with 0.70 in.
What plant hardiness zone is Vernon in?
The USDA's 2023 map puts Vernon in zone 6b in ZIP code 84080, the nearest ZIP area. By the same method at Vernon's NOAA station, the coldest night of a typical year reaches −9°F (20 years, 1991-2020): zone 6a.
How late can frost come in Vernon?
In half of years the last 32°F night comes after June 1; in one year in ten it comes after June 19. Waiting until June 19 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Utah climateThe statewide normals and every place in the state
- Johnson Pass, UT19 miles from this station, 49.8°F a year
- Fairfield, UT22 miles from this station, 47.6°F a year
- Dugway, UT26 miles from this station, 51.7°F a year
- Little Sahara Rec Area, UT26 miles from this station, 50.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made