Photo: Richard Bauer · CC BY 2.0Precipitation in Brogan trails that of 95% of U.S. towns: 13 inches a year
Nights in January average 21°. Seasons differ by 72°, from the coldest nights to the warmest afternoons. Summer afternoons here are warmer than in 87% of U.S. towns. Seedlings are safe outdoors from about May 7, with the first autumn frost due around October 3.
A year in Brogan at a glance
Each month’s typical high and low, and what it brings.
What stands out about Brogan’s climate
Compared with towns across the U.S., with Brogan’s place in Oregon beside it.
What a year in Brogan feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 147 frost-free days a year
In half of years the last 32° night comes by May 7 and the first by October 3. Frost and day counts come from NOAA’s station at Westfall, OR, 20 miles from the town’s center, 400 ft higher.
The 2023 USDA map puts Brogan’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −2°. 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 13 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 Brogan
89% 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 Westfall, OR.
Living with Brogan’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
147 frost-free days in zone 6b. The last frost comes by May 7 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 3.
Months with highs of 62–84° and lows of 40° or more: May, June and September.
Parks & trails →Of the yearly building losses FEMA expects in Brogan from natural hazards, river flooding is the largest share (44%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Brogan and similar climates
TownRatings has no climate map of the towns around Brogan 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 Brogan averaged 1.4° warmer than the 1900s. The biggest change is in January (+2.9°).
A bigger shift than in 50% 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 Brogan compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Brogan’s place among Oregon’s.
Brogan weather by month
Highs, lows and precipitation from NOAA’s grid at Brogan’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 37° | 21° | 1.8" | 19° – 34° |
| February | 44° | 24° | 1.3" | 26° – 41° |
| March | 55° | 30° | 1.2" | 38° – 48° |
| April | 63° | 35° | 1.0" | 43° – 55° |
| May | 72° | 43° | 1.3" | 51° – 63° |
| June | 80° | 50° | 0.9" | 60° – 75° |
| July | 92° | 57° | 0.4" | 63° – 80° |
| August | 91° | 54° | 0.3" | 66° – 76° |
| September | 80° | 45° | 0.4" | 59° – 66° |
| October | 65° | 34° | 0.8" | 42° – 56° |
| November | 48° | 26° | 1.3" | 31° – 42° |
| December | 37° | 20° | 2.1" | 21° – 34° |
| Year | 63° | 37° | 12.8" |
How much a month can swing
A normal is an average. July swings the most: from 1991 to 2020 its average ranged from 63° to 80°. September is the most reliable, staying within 7°.
Where Brogan’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 Brogan’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Westfall, OR, 20 miles from the town’s center, 400 ft higher; 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 Brogan’s climate
What is the weather like in Brogan?
A typical July afternoon reaches 92°, a January night drops to 21°. Colder January nights than 56% of U.S. towns; hotter July afternoons than 87% of U.S. towns.
How cold does it get in Brogan in winter?
December nights average 20°. About 162 nights a year reach 32° or below and 3 reach 0° or below. In the coldest December of the last 30 years the month averaged 21°.
How hot does it get in Brogan?
July, with a typical high of 92° and a low of 57°. About 49 days a year reach 90° and 5 reach 100° (Westfall, OR).
When is the first and last frost in Brogan?
In half of years the last spring frost (32°) comes by May 7 and the first fall frost by October 3, about 147 frost-free days, at Westfall, OR.
What growing zone is Brogan in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −2°.
What is the best time of year to visit Brogan?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Brogan getting warmer?
Yes: 1991–2020 averaged 1.4° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 50% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Brogan.
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.