Klamath Falls in Summer
In summer (June, July and August), Klamath Falls sees average daytime highs around 81°F and overnight lows near 52°F, with 1.5 in of rain over about 9 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 70°F in early June to 81°F by late August. The sky is clear or mostly clear about 71% of the time across summer, and the air most often feels dry.
Summer is Klamath Falls's best 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
- 81°F
- warmest season of the year
- Avg overnight low
- 52°F
- Rainfall
- 1.5 in
- 9 wet days
- Avg wind
- 5 mph
- Travel score
- 7.5
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Klamath Falls in Summer
Over the season highs climb from about 70°F in early June to 81°F by late August.
A typical summer day in Klamath Falls reaches about 81°F and drops to 52°F overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Klamath Falls
Once humidity and wind are folded in, summer brings about 0 days that feel above 90°F and 0 that feel at or below 32°F.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Klamath Falls weather by month
How the three summer months (June, July and August) 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 Summer
The sky is clear or mostly clear about 71% of the time across summer.
Chance of precipitation in Summer
Klamath Falls gets around 1.5 in of rain over 9 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 5 mph across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 48 min in early June to 13 hours by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 7.6 kWh/m².
Hazard calendar for Klamath Falls
None of Klamath Falls's seasonal hazards peak in summer. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Klamath Falls's rainy season runs November–April, when most of the year's rain falls.
Is summer a good time to visit Klamath Falls?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is one of the better times to visit Klamath Falls for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Klamath Falls in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Klamath Falls sees daytime highs around 81°F and nights near 52°F. Pack light clothes and sun protection. About 9 days see rain.
UV index in Klamath Falls in Summer
Clear-sky midday UV across summer averages around 9 (very high — sun protection essential). 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 Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer 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.