Aurora Colony Historic District · Photo: M.O. Stevens · CC BY 3.0Aurora’s winters are milder and less snowy than most of the U.S.
A typical July afternoon reaches 82°, a January night drops to 36°, and about 1 inches of snow falls in a normal winter.
A year in Aurora at a glance
Each month’s typical high and low, and what it brings.
What stands out about Aurora’s climate
Compared with towns across the U.S., with Aurora’s place in Oregon beside it.
What a year in Aurora feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 242 frost-free days a year
In half of years the last 32° night comes by March 16 and the first by November 14. Frost and day counts come from NOAA’s station at Aurora State Airport, 1.5 miles from the town’s center, at about the same height.
The 2023 USDA map puts Aurora’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 20°. 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 1 inches of snow a winter
Snow, measured at Rex 1 S, OR, falls mostly in January. 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 153 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Aurora
90% 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 Aurora State Airport.
Living with Aurora’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
242 frost-free days in zone 9a. The last frost comes by Mar 16 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 14.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Aurora from natural hazards, earthquakes are the largest share (78%); heat waves, cold waves, winter storms and ice storms together are 3%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Aurora and similar climates
TownRatings has no climate map of the towns around Aurora yet.
Climates most like Aurora’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 |
|---|---|---|---|---|
| Aurora, OR | 36° | 82° | 42" | 1.0" |
| Healdsburg, CA | 38° | 85° | 41" | 0.0" |
| Kill Devil Hills, NC | 35° | 86° | 50" | 1.1" |
| Mercer Island, WA | 37° | 77° | 37" | 3.8" |
| Brigantine, NJ | 28° | 83° | 45" | 10" |
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 Aurora averaged 1.2° warmer than the 1900s. The biggest change is in January (+2.6°).
A smaller shift than in 65% 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 Aurora compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Aurora’s place among Oregon’s.
Aurora weather by month
Highs, lows and precipitation from NOAA’s grid at Aurora’s center; snow, wet days and snow on the ground from Rex 1 S, OR. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 48° | 36° | 5.9" | 0.6" | 20 | 0 | 35° – 46° |
| February | 51° | 36° | 4.4" | 0.1" | 16 | 0 | 38° – 49° |
| March | 57° | 39° | 4.6" | 0.2" | 18 | 0 | 44° – 52° |
| April | 61° | 42° | 3.5" | 0.0" | 15 | 0 | 47° – 56° |
| May | 69° | 47° | 2.5" | 0.0" | 11 | 0 | 53° – 62° |
| June | 74° | 51° | 1.6" | 0.0" | 8 | 0 | 59° – 69° |
| July | 82° | 55° | 0.4" | 0.0" | 3 | 0 | 63° – 72° |
| August | 83° | 55° | 0.5" | 0.0" | 3 | 0 | 65° – 72° |
| September | 77° | 51° | 1.6" | 0.0" | 7 | 0 | 60° – 66° |
| October | 64° | 44° | 3.9" | 0.0" | 13 | 0 | 51° – 59° |
| November | 53° | 39° | 6.2" | 0.0" | 19 | 0 | 40° – 51° |
| December | 47° | 35° | 7.0" | 0.1" | 20 | 0 | 35° – 44° |
| Year | 64° | 44° | 42.2" | 1.0" | 153 | 0 |
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 49°. September is the most reliable, staying within 6°.
Where Aurora’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 Aurora’s center.
- Snow: Rex 1 S, OR.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Aurora State Airport, 1.5 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 Aurora’s climate
What is the weather like in Aurora?
A typical July afternoon reaches 82°, a January night drops to 36°, and about 1 inches of snow falls in a normal winter. Milder January nights than 83% of U.S. towns; cooler July afternoons than 80% of U.S. towns.
How cold does it get in Aurora in winter?
December nights average 35°. About 39 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 35°.
How much snow does Aurora get?
About 1.0 inches in a normal winter at Rex 1 S, OR, most of it in January, with snow on the ground about 0 days a year.
How hot does it get in Aurora?
July, with a typical high of 82° and a low of 55°. About 18 days a year reach 90° and 1 reach 100° (Aurora State Airport).
When is the first and last frost in Aurora?
In half of years the last spring frost (32°) comes by March 16 and the first fall frost by November 14, about 242 frost-free days, at Aurora State Airport.
What growing zone is Aurora in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 20°.
What is the best time of year to visit Aurora?
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 Aurora getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 65% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Aurora.
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.