Less rain and snow falls on Vernon than on 94% of U.S. towns: 14 inches a year
In January the night’s low is typically 18°. By July afternoons alone, it runs cooler than 77% of U.S. towns. Decade by decade the climate has edged up, 1.2° above 1901–2000. Seedlings are safe outdoors from about May 20, with the first autumn frost due around October 11.
A year in Vernon at a glance
Each month’s typical high and low, and what it brings.
What stands out about Vernon’s climate
Compared with towns across the U.S., with Vernon’s place in Arizona beside it.
What a year in Vernon feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 142 frost-free days a year
In half of years the last 32° night comes by May 20 and the first by October 11. Frost and day counts come from NOAA’s station at Mc Nary 2n, AZ, 13 miles from the town’s center, 390 ft higher.
The 2023 USDA map puts Vernon’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −3°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 70 inches of snow a winter
Snow, measured at Pinetop 2e, AZ, falls mostly in January and December. Precipitation (rain plus melted snow) adds up to 14 inches a year; August is the wettest month and June the driest. Rain or snow falls on about 90 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Vernon
98% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Mc Nary 2n, AZ.
Living with Vernon’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
142 frost-free days in zone 6b. The last frost comes by May 20 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 11.
Months with highs of 62–84° and lows of 40° or more: June, July, August and September.
Parks & trails →Of the yearly building losses FEMA expects in Vernon from natural hazards, wildfire is the largest share (69%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Vernon and similar climates
TownRatings has no climate map of the towns around Vernon yet.
Climates most like Vernon’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Vernon, AZ | 18° | 82° | 14" | 70" |
| Evergreen, MT | 18° | 82° | 15" | 54" |
| Ranchettes, WY | 16° | 85° | 16" | 65" |
| Rexburg, ID | 12° | 84° | 13" | 70" |
| Castle Rock, CO | 18° | 85° | 18" | 58" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Vernon averaged 1.2° warmer than the 1900s. The biggest change is in March (+2.1°).
A smaller shift than in 64% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Vernon compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Vernon’s place among Arizona’s.
Vernon weather by month
Highs, lows and precipitation from NOAA’s grid at Vernon’s center; snow, wet days and snow on the ground from Pinetop 2e, AZ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 46° | 18° | 1.0" | 16.5" | 7 | 17 | 25° – 38° |
| February | 49° | 21° | 0.9" | 14.7" | 7 | 11 | 29° – 41° |
| March | 55° | 25° | 0.8" | 10.4" | 7 | 6 | 34° – 45° |
| April | 62° | 30° | 0.5" | 4.4" | 4 | 1 | 40° – 51° |
| May | 71° | 37° | 0.5" | 0.7" | 4 | 0 | 49° – 59° |
| June | 82° | 45° | 0.4" | 0.0" | 3 | 0 | 58° – 67° |
| July | 82° | 52° | 2.7" | 0.0" | 15 | 0 | 65° – 71° |
| August | 80° | 52° | 2.9" | 0.0" | 16 | 0 | 63° – 70° |
| September | 75° | 45° | 1.6" | 0.0" | 9 | 0 | 56° – 62° |
| October | 66° | 34° | 1.1" | 2.8" | 6 | 1 | 47° – 54° |
| November | 55° | 24° | 0.9" | 5.2" | 5 | 3 | 32° – 48° |
| December | 46° | 18° | 1.0" | 15.6" | 7 | 12 | 27° – 37° |
| Year | 64° | 33° | 14.1" | 70.3" | 90 | 51 |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 32° to 48°. July is the most reliable, staying within 6°.
Where Vernon’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Vernon’s center.
- Snow: Pinetop 2e, AZ.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Mc Nary 2n, AZ, 13 miles from the town’s center, 390 ft higher; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Vernon’s climate
What is the weather like in Vernon?
A typical July afternoon reaches 82°, a January night drops to 18°, and about 70 inches of snow falls in a normal winter. Colder January nights than 72% of U.S. towns; cooler July afternoons than 77% of U.S. towns.
How cold does it get in Vernon in winter?
January nights average 18°. About 170 nights a year reach 32° or below and 1 reach 0° or below. In the coldest January of the last 30 years the month averaged 25°.
How much snow does Vernon get?
About 70 inches in a normal winter at Pinetop 2e, AZ, most of it in January and December, with snow on the ground about 51 days a year.
How hot does it get in Vernon?
July, with a typical high of 82° and a low of 52°. About 2 days a year reach 90° (Mc Nary 2n, AZ).
When is the first and last frost in Vernon?
In half of years the last spring frost (32°) comes by May 20 and the first fall frost by October 11, about 142 frost-free days, at Mc Nary 2n, AZ.
What growing zone is Vernon in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −3°.
What is the best time of year to visit Vernon?
By one simple rule (highs of 62–84° and lows of 40° or more), June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Vernon getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 64% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Vernon.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.