Bellevue Historic District · Photo: Acroterion · CC BY-SA 4.0Less rain and snow falls on Bellevue than on 94% of U.S. towns: 14 inches a year
Midwinter brings lows of about 11°. A year here swings 73° from midwinter lows to midsummer highs. In January, nights here are colder than in 92% of U.S. towns. The heating season runs October to April: each of those months averages under 50°.
A year in Bellevue at a glance
Each month’s typical high and low, and what it brings.
What stands out about Bellevue’s climate
Compared with towns across the U.S., with Bellevue’s place in Idaho beside it.
What a year in Bellevue feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 139 frost-free days a year
In half of years the last 32° night comes by May 13 and the first by October 2. Frost and day counts come from NOAA’s station at Bellevue, ID, 0.2 miles from the town’s center, at about the same height.
The 2023 USDA map puts Bellevue’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −10°. 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 46 inches of snow a winter
Snow, measured at Picabo, ID, falls mostly in January and December. Precipitation (rain plus melted snow) adds up to 14 inches a year; December is the wettest month and August the driest. Rain or snow falls on about 60 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Bellevue
94% 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 Bellevue, ID.
Living with Bellevue’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
139 frost-free days in zone 6a. The last frost comes by May 13 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 2.
Months with highs of 62–84° and lows of 40° or more: June and August. 2.7 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Bellevue from natural hazards, avalanches are the largest share (66%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Bellevue and similar climates
TownRatings has no climate map of the towns around Bellevue yet.
Climates most like Bellevue’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 |
|---|---|---|---|---|
| Bellevue, ID | 11° | 85° | 14" | 46" |
| Cody, WY | 14° | 85° | 11" | 45" |
| Gypsum, CO | 11° | 86° | 14" | 39" |
| Helena, MT | 15° | 85° | 12" | 37" |
| Taos, NM | 11° | 84° | 13" | 28" |
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 Bellevue averaged 1.5° warmer than the 1900s. The biggest change is in March (+2.8°).
A bigger shift than in 58% 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 Bellevue compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Bellevue’s place among Idaho’s.
Bellevue weather by month
Highs, lows and precipitation from NOAA’s grid at Bellevue’s center; snow, wet days and snow on the ground from Picabo, ID. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 31° | 11° | 1.7" | 13.9" | 7 | 27 | 14° – 28° |
| February | 35° | 14° | 1.4" | 8.5" | 6 | 23 | 18° – 33° |
| March | 44° | 23° | 1.3" | 2.8" | 6 | 14 | 28° – 40° |
| April | 54° | 29° | 1.0" | 0.8" | 7 | 1 | 35° – 47° |
| May | 65° | 37° | 1.6" | 0.0" | 6 | 0 | 44° – 58° |
| June | 74° | 43° | 1.0" | 0.0" | 4 | 0 | 53° – 65° |
| July | 85° | 50° | 0.4" | 0.0" | 2 | 0 | 57° – 73° |
| August | 83° | 49° | 0.4" | 0.0" | 2 | 0 | 60° – 70° |
| September | 73° | 40° | 0.7" | 0.0" | 3 | 0 | 53° – 61° |
| October | 59° | 31° | 1.0" | 0.3" | 5 | 0 | 37° – 52° |
| November | 42° | 21° | 1.2" | 4.1" | 5 | 5 | 23° – 38° |
| December | 31° | 12° | 2.0" | 15.2" | 7 | 20 | 16° – 26° |
| Year | 56° | 30° | 13.6" | 45.6" | 60 | 91 |
How much a month can swing
A normal is an average. July swings the most: from 1991 to 2020 its average ranged from 57° to 73°. September is the most reliable, staying within 8°.
Where Bellevue’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 Bellevue’s center.
- Snow: Picabo, ID.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Bellevue, ID, 0.2 miles from the town’s center, at about the same height; 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 Bellevue’s climate
What is the weather like in Bellevue?
A typical July afternoon reaches 85°, a January night drops to 11°, and about 46 inches of snow falls in a normal winter. Colder January nights than 92% of U.S. towns; cooler July afternoons than 54% of U.S. towns.
How cold does it get in Bellevue in winter?
January nights average 11°. About 154 nights a year reach 32° or below and 3 reach 0° or below. In the coldest January of the last 30 years the month averaged 14°.
How much snow does Bellevue get?
About 46 inches in a normal winter at Picabo, ID, most of it in January and December, with snow on the ground about 91 days a year.
How hot does it get in Bellevue?
July, with a typical high of 85° and a low of 50°. About 24 days a year reach 90° (Bellevue, ID).
When is the first and last frost in Bellevue?
In half of years the last spring frost (32°) comes by May 13 and the first fall frost by October 2, about 139 frost-free days, at Bellevue, ID.
What growing zone is Bellevue in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −10°.
What is the best time of year to visit Bellevue?
By one simple rule (highs of 62–84° and lows of 40° or more), June and August. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Bellevue getting warmer?
Yes: 1991–2020 averaged 1.5° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 58% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Bellevue.
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.