Sprague River is drier than 94% of U.S. towns: 14 inches of precipitation a year
Nights in January average 20°. The year swings widely: the coldest month’s nights and the warmest month’s afternoons are 67° apart. By January nights alone, it runs colder than 60% of U.S. towns. Warm coats and heating bills mark the months from October to April, when means dip under 50°.
A year in Sprague River at a glance
Each month’s typical high and low, and what it brings.
What stands out about Sprague River’s climate
Compared with towns across the U.S., with Sprague River’s place in Oregon beside it.
What a year in Sprague River feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 99 frost-free days a year
In half of years the last 32° night comes by June 9 and the first by September 18. Frost and day counts come from NOAA’s station at Klamath Falls International Airport, 24 miles from the town’s center, 230 ft lower.
The 2023 USDA map puts Sprague River’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −6°. 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 14 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 Sprague River
97% 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 Klamath Falls International Airport.
Living with Sprague River’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
99 frost-free days in zone 6a. The last frost comes by Jun 9 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 18.
Of the yearly building losses FEMA expects in Sprague River from natural hazards, river flooding is the largest share (43%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Sprague River and similar climates
TownRatings has no climate map of the towns around Sprague River 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 Sprague River averaged 1.8° warmer than the 1900s. The biggest change is in January (+3.5°).
A bigger shift than in 79% 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 Sprague River compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Sprague River’s place among Oregon’s.
Sprague River weather by month
Highs, lows and precipitation from NOAA’s grid at Sprague River’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 41° | 20° | 1.9" | 23° – 38° |
| February | 45° | 22° | 1.5" | 25° – 40° |
| March | 51° | 25° | 1.5" | 31° – 45° |
| April | 57° | 28° | 1.2" | 37° – 49° |
| May | 66° | 35° | 1.2" | 43° – 58° |
| June | 75° | 40° | 0.7" | 52° – 66° |
| July | 85° | 45° | 0.3" | 55° – 70° |
| August | 85° | 43° | 0.3" | 59° – 69° |
| September | 77° | 37° | 0.5" | 52° – 62° |
| October | 63° | 29° | 0.8" | 42° – 53° |
| November | 48° | 24° | 1.6" | 26° – 41° |
| December | 39° | 19° | 2.3" | 24° – 33° |
| Year | 61° | 31° | 13.8" |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 26° to 41°. December is the most reliable, staying within 9°.
Where Sprague River’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 Sprague River’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Klamath Falls International Airport, 24 miles from the town’s center, 230 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 Sprague River’s climate
What is the weather like in Sprague River?
A typical July afternoon reaches 85°, a January night drops to 20°. Colder January nights than 60% of U.S. towns; hotter July afternoons than 51% of U.S. towns.
How cold does it get in Sprague River in winter?
December nights average 19°. About 184 nights a year reach 32° or below and 2 reach 0° or below. In the coldest December of the last 30 years the month averaged 24°.
How hot does it get in Sprague River?
July, with a typical high of 85° and a low of 45°. About 18 days a year reach 90° (Klamath Falls International Airport).
When is the first and last frost in Sprague River?
In half of years the last spring frost (32°) comes by June 9 and the first fall frost by September 18, about 99 frost-free days, at Klamath Falls International Airport.
What growing zone is Sprague River in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −6°.
What is the best time of year to visit Sprague River?
No month meets the simple rule we use (highs of 62–84° and lows of 40° or more). The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Sprague River getting warmer?
Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 79% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Sprague River.
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.