Klamath Falls in Winter
In winter (December, January and February), Klamath Falls sees average daytime highs around 40°F and overnight lows near 26°F, with 9.6 in of precipitation over about 34 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Over the season highs climb from about 40°F in early December to 44°F by late February. The sky is clear or mostly clear about 22% of the time across winter, and the air most often feels dry.
Winter is Klamath Falls's weakest season of the year to visit on our travel score. For the whole year in context, see Klamath Falls's year-round climate.
- Avg daytime high
- 40°F
- coldest season of the year
- Avg overnight low
- 26°F
- Precipitation
- 9.6 in
- 34 wet days
- Avg wind
- 5 mph
- Travel score
- 0.1
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Klamath Falls in Winter
Over the season highs climb from about 40°F in early December to 44°F by late February.
A typical winter day in Klamath Falls reaches about 40°F and drops to 26°F overnight. The warmest of the three months is February, the coolest January.
How winter really feels in Klamath Falls
Once humidity and wind are folded in, winter brings about 0 days that feel above 90°F and 90 that feel at or below 32°F.
The story in winter is cold — wind chill drags the overnight "feels like" below the raw low.
Klamath Falls weather by month
How the three winter months (December, January and February) 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 | 39° / 26° | 3.2 | 11.8 | 9.5 | 9.3 | 0.0 |
| Feb | 43° / 27° | 2.5 | 10 | 8.4 | 10.3 | 0.4 |
| Mar | 48° / 30° | 2.8 | 12.1 | 8 | 11.6 | 1.8 |
| Apr | 55° / 34° | 2.0 | 10.1 | 4.5 | 13.1 | 3.5 |
| May | 65° / 41° | 1.7 | 8.3 | 1.1 | 14.4 | 6.2 |
| Jun | 74° / 47° | 0.9 | 4.7 | 0.1 | 15 | 7.9 |
| Jul | 84° / 55° | 0.3 | 2.1 | 0 | 14.8 | 7.1 |
| Aug | 83° / 55° | 0.4 | 1.8 | 0 | 13.7 | 7.4 |
| Sep | 76° / 48° | 0.5 | 2.6 | 0 | 12.3 | 8.6 |
| Oct | 62° / 40° | 1.4 | 5.7 | 1 | 10.8 | 6.1 |
| Nov | 47° / 32° | 2.7 | 9.7 | 5.5 | 9.6 | 1.4 |
| Dec | 38° / 26° | 3.9 | 12.4 | 10.4 | 9 | 0.0 |
Cloud cover in Winter
The sky is clear or mostly clear about 22% of the time across winter.
Chance of precipitation in Winter
Klamath Falls gets around 9.6 in of rain and snow over 34 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 5 mph across winter.
Sunrise & sunset in Winter
Daylight runs from about 9 h 06 min in early December to 10 h 54 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 2.3 kWh/m².
Hazard calendar for Klamath Falls
In winter, Klamath Falls overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Klamath Falls's rainy season runs November–April, when most of the year's rain falls.
Is winter a good time to visit Klamath Falls?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Klamath Falls.
What to pack for Klamath Falls in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Klamath Falls sees daytime highs around 40°F and nights near 26°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 34 days see rain.
UV index in Klamath Falls in Winter
Clear-sky midday UV across winter averages around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Klamath Falls peaks around July 11 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 2 (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) | 2 | 3 | 5 | 6 | 9 | 9 | 10 | 8 | 6 | 5 | 2 | 2 |
| Level | Moderate | Moderate | High | High | Very high | Very high | Very high | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 3 | Moderate |
| Mar | 5 | High |
| Apr | 6 | High |
| May | 9 | Very high |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 5 | Moderate |
| Nov | 2 | Low |
| Dec | 2 | Low |
Air quality in Klamath Falls in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Klamath Falls is worst in July — around 40 µg/m³ PM2.5 (poor), about 7.4× the cleanest month (January, 5 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) | 5 | 8 | 9 | 14 | 9 | 7 | 40 | 33 | 38 | 10 | 8 | 9 |
| Level | Good | Good | Good | Moderate | Good | Good | Poor | Moderate | Poor | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 5 | Good |
| Feb | 8 | Good |
| Mar | 9 | Good |
| Apr | 14 | Moderate |
| May | 9 | Good |
| Jun | 7 | Good |
| Jul | 40 | Poor |
| Aug | 33 | Moderate |
| Sep | 38 | Poor |
| Oct | 10 | Good |
| Nov | 8 | Good |
| Dec | 9 | Good |
Where is Klamath Falls?
Klamath Falls sits at 42.2°N, 121.8°W, 4,108 ft above sea level, in United States. The nearest listed city is Altamont, 2.5 mi away.
Topography around Klamath Falls
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Klamath Falls.
Within 2 miles, the terrain around Klamath Falls has significant variations in elevation — a maximum elevation change of 896 ft around an average of 4,259 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,126 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 7,894 ft.
The land around Klamath Falls is covered by grassland (47%) and artificial surfaces (29%) within 2 miles, grassland (44%) and trees (30%) within 10 miles, and trees (58%) and grassland (35%) 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 Klamath Falls (42.2249°, -121.7817°, elevation 4,108 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.