Few U.S. towns have cooler summers than Bunker Hill
Nights in January average 40°. Its yearly precipitation tops that of 98% of U.S. towns. Warming shows here too: 1.8° more than in 1901–2000, led by January. Picnics, hikes and garden evenings come into their own from June to October, with highs of 63–68°.
A year in Bunker Hill at a glance
Each month’s typical high and low, and what it brings.
What stands out about Bunker Hill’s climate
Compared with towns across the U.S., with Bunker Hill’s place in Oregon beside it.
What a year in Bunker Hill feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 294 frost-free days a year
In half of years the last 32° night comes by February 21 and the first by December 9. Frost and day counts come from NOAA’s station at North Bend Rgnl Airport, 5 miles from the town’s center, at about the same height.
The 2023 USDA map puts Bunker Hill’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 25°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
About 62 inches of rain a year
December is the wettest month and July the driest. Rain falls on about 159 days a year. Snow is rare: about 0.2" in a normal year at North Bend Rgnl Airport, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Bunker Hill
Nearly all of the work is heating: a normal year has almost no cooling days. 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 North Bend Rgnl Airport.
Living with Bunker Hill’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
294 frost-free days in zone 9a. The last frost comes by Feb 21 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: June, July, August, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Bunker Hill from natural hazards, earthquakes are the largest share (55%). Normals are averages; the hazards page covers the extremes.
Natural hazards →Bunker Hill and similar climates
TownRatings has no climate map of the towns around Bunker Hill yet.
Climates most like Bunker Hill’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 |
|---|---|---|---|---|
| Bunker Hill, OR | 40° | 67° | 62" | 0.2" |
| Fortuna, CA | 42° | 70° | 55" | 0.7" |
| Aberdeen, WA | 37° | 68° | 80" | 0.5" |
| Nantucket, MA | 26° | 76° | 44" | 25" |
| Boone, NC | 24° | 79° | 58" | 26" |
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 Bunker Hill averaged 1.8° warmer than the 1900s. The biggest change is in January (+3.2°).
A bigger shift than in 77% 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 Bunker Hill compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Bunker Hill’s place among Oregon’s.
Bunker Hill weather by month
Highs, lows and precipitation from NOAA’s grid at Bunker Hill’s center; snow, wet days and snow on the ground from North Bend Rgnl Airport. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 54° | 40° | 9.7" | 0.0" | 19 | 0 | 43° – 52° |
| February | 55° | 40° | 7.4" | 0.0" | 18 | 0 | 42° – 52° |
| March | 56° | 40° | 7.8" | 0.0" | 19 | 0 | 44° – 52° |
| April | 57° | 42° | 5.6" | 0.0" | 17 | 0 | 47° – 54° |
| May | 61° | 46° | 3.2" | 0.0" | 12 | 0 | 50° – 58° |
| June | 64° | 49° | 1.7" | 0.0" | 9 | 0 | 54° – 59° |
| July | 67° | 52° | 0.4" | 0.0" | 3 | 0 | 56° – 62° |
| August | 68° | 52° | 0.5" | 0.0" | 4 | 0 | 58° – 63° |
| September | 67° | 50° | 1.6" | 0.0" | 6 | 0 | 56° – 62° |
| October | 63° | 46° | 4.5" | 0.0" | 13 | 0 | 52° – 59° |
| November | 57° | 42° | 8.7" | 0.0" | 19 | 0 | 44° – 53° |
| December | 53° | 39° | 11.2" | 0.2" | 20 | 0 | 41° – 50° |
| Year | 60° | 45° | 62.2" | 0.2" | 159 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 42° to 52°. June is the most reliable, staying within 5°.
Where Bunker Hill’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 Bunker Hill’s center.
- Snow: North Bend Rgnl Airport.
- Frost, freezing nights, 90° and 100° days, heating and cooling: North Bend Rgnl 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 Bunker Hill’s climate
What is the weather like in Bunker Hill?
A typical July afternoon reaches 67°, a January night drops to 40°, and snow is almost unheard of. Milder January nights than 88% of U.S. towns; cooler July afternoons than all but 47 U.S. towns.
How cold does it get in Bunker Hill in winter?
December nights average 39°. About 10 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 41°.
How much snow does Bunker Hill get?
About 0.2 inches in a normal winter at North Bend Rgnl Airport, so most winters see none.
How hot does it get in Bunker Hill?
July, with a typical high of 67°. 90° days are rare: none in a normal year at North Bend Rgnl Airport.
When is the first and last frost in Bunker Hill?
In half of years the last spring frost (32°) comes by February 21 and the first fall frost by December 9, about 294 frost-free days, at North Bend Rgnl Airport.
What growing zone is Bunker Hill in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 25°.
What is the best time of year to visit Bunker Hill?
By one simple rule (highs of 62–84° and lows of 40° or more), June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Bunker Hill getting warmer?
Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 77% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Bunker Hill.
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.