Avimor’s winters are milder but snowier than most of the U.S.
A typical July afternoon reaches 90°, a January night drops to 24°, and about 57 inches of snow falls in a normal winter.
A year in Avimor at a glance
Each month’s typical high and low, and what it brings.
What stands out about Avimor’s climate
Compared with towns across the U.S., with Avimor’s place in Idaho beside it.
What a year in Avimor feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 147 frost-free days a year
In half of years the last 32° night comes by May 17 and the first by October 12. Day counts come from NOAA’s station at Arrowrock Dam, ID, 21 miles from the town’s center, 130 ft lower; frost dates and degree days from Boise 7 N, ID, 4 miles away.
The 2023 USDA map puts Avimor’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 1°. 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 57 inches of snow a winter
Snow, measured at Boise 7 N, ID, falls mostly in December. Precipitation (rain plus melted snow) adds up to 18 inches a year; December is the wettest month and August the driest. Rain or snow falls on about 111 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Avimor
90% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Boise 7 N, ID.
Living with Avimor’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
147 frost-free days in zone 7a. The last frost comes by May 17 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 12.
Months with highs of 62–84° and lows of 40° or more: May, June and September. 1.7 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Avimor from natural hazards, wildfire is the largest share (78%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Avimor and its neighbors
Eagle the hottest July afternoons (93°, 3° warmer). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Avimor’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 |
|---|---|---|---|---|
| Avimor, ID | 24° | 90° | 18" | 57" |
| Kearns, UT | 23° | 91° | 16" | 56" |
| Westminster, CO | 19° | 89° | 16" | 55" |
| Suncrest, WA | 23° | 87° | 16" | 48" |
| Altamont, OR | 22° | 86° | 13" | 52" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Avimor averaged 0.8° warmer than the 1900s. The biggest change is in January (+2.2°).
A smaller shift than in 87% 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 Avimor compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Avimor’s place among Idaho’s.
Avimor weather by month
Highs, lows and precipitation from NOAA’s grid at Avimor’s center; snow, wet days and snow on the ground from Boise 7 N, ID. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 38° | 24° | 2.4" | 14.0" | 14 | 19 | 19° – 38° |
| February | 44° | 27° | 1.8" | 9.2" | 12 | 13 | 28° – 42° |
| March | 53° | 33° | 2.0" | 6.6" | 13 | 4 | 39° – 48° |
| April | 61° | 37° | 1.8" | 2.4" | 11 | 0 | 44° – 54° |
| May | 70° | 44° | 1.8" | 0.7" | 11 | 0 | 51° – 63° |
| June | 79° | 50° | 1.0" | 0.1" | 7 | 0 | 60° – 72° |
| July | 90° | 58° | 0.3" | 0.0" | 4 | 0 | 63° – 80° |
| August | 89° | 57° | 0.2" | 0.0" | 3 | 0 | 67° – 76° |
| September | 79° | 49° | 0.6" | 0.0" | 5 | 0 | 59° – 68° |
| October | 63° | 38° | 1.2" | 0.4" | 8 | 0 | 43° – 57° |
| November | 47° | 31° | 2.0" | 7.3" | 12 | 6 | 32° – 46° |
| December | 38° | 25° | 2.6" | 16.7" | 14 | 18 | 23° – 37° |
| Year | 63° | 39° | 17.8" | 57.4" | 111 | 60 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 19° to 38°. September is the most reliable, staying within 8°.
Where Avimor’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 Avimor’s center.
- Snow: Boise 7 N, ID.
- Frost dates, heating and cooling: Boise 7 N, ID, 4 miles away.
- Freezing nights, 90° and 100° days: Arrowrock Dam, ID, 21 miles from the town’s center, 130 ft lower; 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 Avimor’s climate
What is the weather like in Avimor?
A typical July afternoon reaches 90°, a January night drops to 24°, and about 57 inches of snow falls in a normal winter. Milder January nights than 60% of U.S. towns; hotter July afternoons than 77% of U.S. towns.
How cold does it get in Avimor in winter?
January nights average 24°. About 134 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 19°.
How much snow does Avimor get?
About 57 inches in a normal winter at Boise 7 N, ID, most of it in December, with snow on the ground about 60 days a year.
How hot does it get in Avimor?
July, with a typical high of 90° and a low of 58°. About 50 days a year reach 90° and 9 reach 100° (Boise 7 N, ID).
When is the first and last frost in Avimor?
In half of years the last spring frost (32°) comes by May 17 and the first fall frost by October 12, about 147 frost-free days, at Boise 7 N, ID.
What growing zone is Avimor in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 1°.
What is the best time of year to visit Avimor?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Avimor getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 87% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Avimor.
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.