Wallace and Glenn Potter House · Photo: Visitor7 · CC BY-SA 3.0Midwinter lows in River Road stay above those of 81% of U.S. towns
In July the day’s top temperature is typically 83°. Summers stay cool: July afternoons here are cooler than in 71% of U.S. towns. January has warmed most since 1901–2000, part of a 1.1° rise. Plan time outside from May to October, when highs sit at 65–84°.
A year in River Road at a glance
Each month’s typical high and low, and what it brings.
What stands out about River Road’s climate
Compared with towns across the U.S., with River Road’s place in Oregon beside it.
What a year in River Road feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 196 frost-free days a year
In half of years the last 32° night comes by April 11 and the first by October 23. Frost and day counts come from NOAA’s station at Eugene Mahlon Sweet Airport, 5 miles from the town’s center, at about the same height.
The 2023 USDA map puts River Road’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 18°. 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 3 inches of snow a winter
Snow, measured at Leaburg 1 Sw, OR, falls mostly in February and December. Precipitation (rain plus melted snow) adds up to 42 inches a year; December is the wettest month and July the driest. Rain or snow falls on about 166 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in River Road
94% 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 Eugene Mahlon Sweet Airport.
Living with River Road’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
196 frost-free days in zone 8b. The last frost comes by Apr 11 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 23.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October. 0.1 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in River Road from natural hazards, river flooding is the largest share (68%); heat waves, cold waves, winter storms and ice storms together are 3%. Normals are averages; the hazards page covers the extremes.
Natural hazards →River Road and its neighbors
Every town next door is within a degree of River Road in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like River Road’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 |
|---|---|---|---|---|
| River Road, OR | 35° | 83° | 42" | 3.4" |
| Healdsburg, CA | 38° | 85° | 41" | 0.0" |
| Brigantine, NJ | 28° | 83° | 45" | 10" |
| Ocean City, MD | 30° | 86° | 46" | 10" |
| Kill Devil Hills, NC | 35° | 86° | 50" | 1.1" |
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 River Road averaged 1.1° warmer than the 1900s. The biggest change is in January (+2.4°).
A smaller shift than in 68% 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 River Road compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with River Road’s place among Oregon’s.
River Road weather by month
Highs, lows and precipitation from NOAA’s grid at River Road’s center; snow, wet days and snow on the ground from Leaburg 1 Sw, OR. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 48° | 35° | 6.1" | 0.5" | 20 | 1 | 36° – 46° |
| February | 52° | 36° | 4.7" | 1.2" | 18 | 1 | 38° – 49° |
| March | 57° | 38° | 4.8" | 0.2" | 20 | 0 | 44° – 52° |
| April | 62° | 40° | 3.7" | 0.0" | 19 | 0 | 47° – 56° |
| May | 68° | 45° | 2.6" | 0.0" | 14 | 0 | 52° – 61° |
| June | 74° | 49° | 1.4" | 0.0" | 9 | 0 | 58° – 67° |
| July | 83° | 52° | 0.3" | 0.0" | 3 | 0 | 62° – 71° |
| August | 84° | 52° | 0.4" | 0.0" | 3 | 0 | 65° – 71° |
| September | 77° | 49° | 1.4" | 0.0" | 7 | 0 | 60° – 66° |
| October | 65° | 43° | 3.4" | 0.0" | 14 | 0 | 50° – 59° |
| November | 53° | 39° | 6.2" | 0.2" | 20 | 0 | 40° – 51° |
| December | 47° | 35° | 7.4" | 1.3" | 21 | 1 | 35° – 45° |
| Year | 64° | 43° | 42.4" | 3.4" | 166 | 3 |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 40° to 51°. September is the most reliable, staying within 6°.
Where River Road’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 River Road’s center.
- Snow: Leaburg 1 Sw, OR.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Eugene Mahlon Sweet Airport, 5 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 River Road’s climate
What is the weather like in River Road?
A typical July afternoon reaches 83°, a January night drops to 35°, and about 3 inches of snow falls in a normal winter. Milder January nights than 81% of U.S. towns; cooler July afternoons than 71% of U.S. towns.
How cold does it get in River Road in winter?
December nights average 35°. About 52 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 35°.
How much snow does River Road get?
About 3.4 inches in a normal winter at Leaburg 1 Sw, OR, most of it in February and December, with snow on the ground about 3 days a year.
How hot does it get in River Road?
July, with a typical high of 83° and a low of 52°. About 18 days a year reach 90° and 1 reach 100° (Eugene Mahlon Sweet Airport).
When is the first and last frost in River Road?
In half of years the last spring frost (32°) comes by April 11 and the first fall frost by October 23, about 196 frost-free days, at Eugene Mahlon Sweet Airport.
What growing zone is River Road in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 18°.
What is the best time of year to visit River Road?
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 River Road getting warmer?
Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 68% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in River Road.
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.