Photo: Roberto J. Galindo · CC BY-SA 4.0Less rain and snow falls on Chemult than on 87% of U.S. towns: 25 inches a year
Midwinter brings lows of about 20°. Summers stay cool: July afternoons here are cooler than in 86% of U.S. towns. Warming shows here too: 1.2° more than in 1901–2000, led by January. The outdoor season, with highs of 81°, runs through July and August.
A year in Chemult at a glance
Each month’s typical high and low, and what it brings.
What stands out about Chemult’s climate
Compared with towns across the U.S., with Chemult’s place in Oregon beside it.
What a year in Chemult feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
A freeze is possible in every month
About 258 nights a year fall to 32° or below, and 8 to 0° or below. Frost and day counts come from NOAA’s station at Chemult, OR, 1.0 miles from the town’s center, at about the same height.
The 2023 USDA map puts Chemult’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −9°. 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 25 inches of rain a year
December is the wettest month and August the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Chemult
99% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from September through June.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Chemult, OR.
Living with Chemult’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 6a, and frost can come in any month. The longest frost-free stretch in half of years is about 23 days.
Months with highs of 62–84° and lows of 40° or more: July and August.
Parks & trails →Of the yearly building losses FEMA expects in Chemult from natural hazards, river flooding is the largest share (56%); heat waves, cold waves, winter storms and ice storms together are 9%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Chemult and similar climates
TownRatings has no climate map of the towns around Chemult yet.
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 Chemult averaged 1.2° warmer than the 1900s. The biggest change is in January (+3.3°).
A smaller shift than in 60% 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 Chemult compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Chemult’s place among Oregon’s.
Chemult weather by month
Highs, lows and precipitation from NOAA’s grid at Chemult’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 39° | 20° | 4.2" | 22° – 37° |
| February | 42° | 21° | 3.2" | 25° – 38° |
| March | 48° | 24° | 2.6" | 30° – 42° |
| April | 53° | 27° | 1.6" | 35° – 45° |
| May | 62° | 33° | 1.5" | 42° – 55° |
| June | 71° | 37° | 0.9" | 50° – 61° |
| July | 81° | 42° | 0.5" | 53° – 66° |
| August | 81° | 41° | 0.5" | 57° – 64° |
| September | 73° | 35° | 0.6" | 51° – 58° |
| October | 60° | 29° | 1.6" | 41° – 50° |
| November | 45° | 24° | 3.2" | 26° – 40° |
| December | 38° | 19° | 5.1" | 24° – 33° |
| Year | 58° | 29° | 25.4" |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 22° to 37°. September is the most reliable, staying within 7°.
Where Chemult’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 Chemult’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Chemult, OR, 1.0 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 Chemult’s climate
What is the weather like in Chemult?
A typical July afternoon reaches 81°, a January night drops to 20°. Colder January nights than 61% of U.S. towns; cooler July afternoons than 86% of U.S. towns.
How cold does it get in Chemult in winter?
December nights average 19°. About 258 nights a year reach 32° or below and 8 reach 0° or below. In the coldest December of the last 30 years the month averaged 24°.
How hot does it get in Chemult?
July, with a typical high of 81° and a low of 42°. About 16 days a year reach 90° (Chemult, OR).
When is the first and last frost in Chemult?
There is no reliable frost-free season: at Chemult, OR, every month has nights at 32° or below, about 258 a year. In half of years the longest stretch without a freeze is about 23 days.
What growing zone is Chemult in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −9°.
What is the best time of year to visit Chemult?
By one simple rule (highs of 62–84° and lows of 40° or more), July and August. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Chemult getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 60% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Chemult.
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.