Keizer in Fall
In fall (September, October and November), Keizer sees average daytime highs around 65°F and overnight lows near 47°F, with 10.7 in of rain over about 31 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 80°F in early September to 49°F by late November. The sky is clear or mostly clear about 34% of the time across fall, and the air most often feels dry.
Fall is Keizer's 2nd-best season to visit on our travel score. For the whole year in context, see Keizer's year-round climate.
- Avg daytime high
- 65°F
- 2nd-warmest season
- Avg overnight low
- 47°F
- Rainfall
- 10.7 in
- 31 wet days
- Avg wind
- 5 mph
- Travel score
- 5.4
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Keizer in Fall
Over the season highs ease from about 80°F in early September to 49°F by late November.
A typical fall day in Keizer reaches about 65°F and drops to 47°F overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Keizer
Once humidity and wind are folded in, fall brings about 0 days that feel above 90°F and 0 that feel at or below 32°F.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Keizer weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 48° / 37° | 6.1 | 15.9 | 0.7 | 9 | 1.5 |
| Feb | 52° / 38° | 4.6 | 13.7 | 0.8 | 10.1 | 2.3 |
| Mar | 56° / 40° | 5.1 | 15.7 | 0.4 | 11.6 | 3.2 |
| Apr | 61° / 43° | 3.6 | 14.3 | 0 | 13.2 | 4.3 |
| May | 68° / 48° | 2.2 | 9 | 0 | 14.6 | 6.3 |
| Jun | 74° / 53° | 1.2 | 5.9 | 0 | 15.4 | 7.4 |
| Jul | 83° / 57° | 0.3 | 1.9 | 0 | 15.1 | 7.3 |
| Aug | 83° / 57° | 0.4 | 2 | 0 | 13.9 | 7.2 |
| Sep | 77° / 53° | 1.2 | 4.8 | 0 | 12.3 | 7.9 |
| Oct | 64° / 46° | 3.4 | 10.3 | 0 | 10.7 | 5.7 |
| Nov | 53° / 41° | 6.0 | 15.9 | 0.1 | 9.3 | 2.6 |
| Dec | 47° / 37° | 7.1 | 16.8 | 0.6 | 8.6 | 1.2 |
Cloud cover in Fall
The sky is clear or mostly clear about 34% of the time across fall.
Chance of precipitation in Fall
Keizer gets around 10.7 in of rain over 31 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 5 mph across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 06 min in early September to 8 h 54 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 2.9 kWh/m².
Hazard calendar for Keizer
In fall, Keizer overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Keizer's rainy season runs October–April, when most of the year's rain falls.
Is fall a good time to visit Keizer?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Keizer for sightseeing.
What to pack for Keizer in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Keizer sees daytime highs around 65°F and nights near 47°F. Pack a warm layer and rain gear. Worth having: light clothes and sun protection. About 31 days see rain.
UV index in Keizer in Fall
Clear-sky midday UV across fall averages around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Keizer peaks around July 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 5 | 8 | 7 | 8 | 7 | 5 | 4 | 1 | 1 |
| Level | Low | Low | Moderate | High | Very high | High | Very high | Very high | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | High |
| May | 8 | Very high |
| Jun | 7 | High |
| Jul | 8 | Very high |
| Aug | 7 | Very high |
| Sep | 5 | Moderate |
| Oct | 4 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Keizer in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Keizer is worst in September — around 34 µg/m³ PM2.5 (moderate), about 5.1× the cleanest month (January, 7 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 7 | 8 | 11 | 11 | 9 | 8 | 7 | 14 | 34 | 11 | 10 | 8 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 8 | Good |
| Mar | 11 | Good |
| Apr | 11 | Good |
| May | 9 | Good |
| Jun | 8 | Good |
| Jul | 7 | Good |
| Aug | 14 | Moderate |
| Sep | 34 | Moderate |
| Oct | 11 | Good |
| Nov | 10 | Good |
| Dec | 8 | Good |
Where is Keizer?
Keizer sits at 45.0°N, 123.0°W, 138 ft above sea level, in United States. The nearest listed city is Hayesville, 1.9 mi away.
Topography around Keizer
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Keizer.
Within 2 miles, the terrain around Keizer has only modest variations in elevation — a maximum elevation change of 108 ft around an average of 144 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,079 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,492 ft.
The land around Keizer is covered by trees (39%) and artificial surfaces (36%) within 2 miles, trees (37%), cropland (31%) and grassland (21%) within 10 miles, and trees (71%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Keizer (44.9901°, -123.0262°, elevation 138 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.