Photo: Jsayre64 · CC BY-SA 3.0Mapleton sits near the top of U.S. towns for precipitation, with 70 inches a year
On a normal July day the thermometer tops out near 77°. Summers stay cool: July afternoons here are cooler than in 97% of U.S. towns. Warming shows here too: 1.3° more than in 1901–2000, led by January. Garden chairs stay out from May to October, the months with highs of 64–78°.
A year in Mapleton at a glance
Each month’s typical high and low, and what it brings.
What stands out about Mapleton’s climate
Compared with towns across the U.S., with Mapleton’s place in Oregon beside it.
What a year in Mapleton feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 306 frost-free days a year
In half of years the last 32° night comes by February 15 and the first by December 9. Frost and day counts come from NOAA’s station at Mapleton, OR, 0.2 miles from the town’s center, at about the same height.
The 2023 USDA map puts Mapleton’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 23°. 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 rain a year
December is the wettest month and July the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Mapleton
93% 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 Mapleton, OR.
Living with Mapleton’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
306 frost-free days in zone 9a. The last frost comes by Feb 15 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Dec 9.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October. 1.3 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Mapleton from natural hazards, river flooding is the largest share (70%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Mapleton and similar climates
TownRatings has no climate map of the towns around Mapleton 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 Mapleton averaged 1.3° warmer than the 1900s. The biggest change is in January (+2.8°).
A smaller shift than in 54% 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 Mapleton compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Mapleton’s place among Oregon’s.
Mapleton weather by month
Highs, lows and precipitation from NOAA’s grid at Mapleton’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 49° | 37° | 10.7" | 38° – 48° |
| February | 52° | 37° | 8.0" | 38° – 50° |
| March | 56° | 38° | 8.3" | 43° – 52° |
| April | 60° | 40° | 6.0" | 46° – 55° |
| May | 66° | 44° | 3.6" | 50° – 60° |
| June | 71° | 48° | 2.3" | 56° – 64° |
| July | 77° | 51° | 0.5" | 60° – 67° |
| August | 78° | 52° | 0.7" | 63° – 68° |
| September | 75° | 49° | 2.1" | 58° – 65° |
| October | 64° | 44° | 5.8" | 51° – 59° |
| November | 54° | 40° | 10.1" | 41° – 50° |
| December | 48° | 36° | 12.1" | 38° – 45° |
| Year | 62° | 43° | 70.2" |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 38° to 50°. August is the most reliable, staying within 5°.
Where Mapleton’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 Mapleton’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Mapleton, OR, 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 Mapleton’s climate
What is the weather like in Mapleton?
A typical July afternoon reaches 77°, a January night drops to 37°. Milder January nights than 84% of U.S. towns; cooler July afternoons than 97% of U.S. towns.
How cold does it get in Mapleton in winter?
December nights average 36°. About 22 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 38°.
How hot does it get in Mapleton?
July, with a typical high of 77° and a low of 51°. About 9 days a year reach 90° and 1 reach 100° (Mapleton, OR).
When is the first and last frost in Mapleton?
In half of years the last spring frost (32°) comes by February 15 and the first fall frost by December 9, about 306 frost-free days, at Mapleton, OR.
What growing zone is Mapleton in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 23°.
What is the best time of year to visit Mapleton?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Mapleton getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 54% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Mapleton.
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.