Photo: Loren Kerns · CC BY 2.0Precipitation in Fort Klamath trails that of 88% of U.S. towns: 23 inches a year
July afternoons average 84°. Summers stay cool: July afternoons here are cooler than in 64% of U.S. towns. Decade by decade the climate has edged up, 1.5° above 1901–2000. If you like long walks, July and August offer highs of 83–84°.
A year in Fort Klamath at a glance
Each month’s typical high and low, and what it brings.
What stands out about Fort Klamath’s climate
Compared with towns across the U.S., with Fort Klamath’s place in Oregon beside it.
What a year in Fort Klamath feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
A freeze is possible in every month
About 216 nights a year fall to 32° or below, and 5 to 0° or below. Frost and day counts come from NOAA’s station at Chiloquin 12 Nw (fort Klamath), OR, 0.1 miles from the town’s center, at about the same height.
The 2023 USDA map puts Fort Klamath’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −4°. 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 61 inches of snow a winter
Snow, measured at Chiloquin 12 Nw (fort Klamath), OR, falls mostly in December. Precipitation (rain plus melted snow) adds up to 23 inches a year; December is the wettest month and July the driest. Rain or snow falls on about 98 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Fort Klamath
99% of the work is heating, so the furnace matters far more than the air conditioner. 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 Chiloquin 12 Nw (fort Klamath), OR.
Living with Fort Klamath’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 6b, and frost can come in any month. The longest frost-free stretch in half of years is about 59 days.
Months with highs of 62–84° and lows of 40° or more: July and August.
Parks & trails →Of the yearly building losses FEMA expects in Fort Klamath from natural hazards, river flooding is the largest share (43%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Fort Klamath and similar climates
TownRatings has no climate map of the towns around Fort Klamath yet.
Climates most like Fort Klamath’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 |
|---|---|---|---|---|
| Fort Klamath, OR | 21° | 84° | 23" | 61" |
| Moscow, ID | 25° | 84° | 25" | 51" |
| Columbia Falls, MT | 18° | 82° | 20" | 54" |
| Liberty Lake, WA | 25° | 84° | 22" | 45" |
| Castle Rock, CO | 18° | 85° | 18" | 58" |
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 Fort Klamath averaged 1.5° warmer than the 1900s. The biggest change is in January (+3.2°).
A bigger shift than in 58% 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 Fort Klamath compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Fort Klamath’s place among Oregon’s.
Fort Klamath weather by month
Highs, lows and precipitation from NOAA’s grid at Fort Klamath’s center; snow, wet days and snow on the ground from Chiloquin 12 Nw (fort Klamath), OR. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 41° | 21° | 3.6" | 13.5" | 13 | 25 | 23° – 38° |
| February | 45° | 23° | 2.5" | 10.0" | 11 | 19 | 27° – 41° |
| March | 50° | 26° | 2.2" | 7.6" | 11 | 13 | 31° – 44° |
| April | 55° | 28° | 1.6" | 2.5" | 10 | 2 | 37° – 48° |
| May | 65° | 35° | 1.4" | 0.3" | 8 | 0 | 44° – 57° |
| June | 73° | 39° | 0.7" | 0.0" | 4 | 0 | 52° – 64° |
| July | 84° | 44° | 0.4" | 0.0" | 2 | 0 | 55° – 68° |
| August | 83° | 43° | 0.4" | 0.0" | 3 | 0 | 59° – 67° |
| September | 76° | 37° | 0.5" | 0.0" | 3 | 0 | 53° – 60° |
| October | 63° | 30° | 1.5" | 0.1" | 8 | 0 | 42° – 52° |
| November | 47° | 25° | 3.1" | 7.9" | 12 | 6 | 27° – 42° |
| December | 40° | 21° | 4.6" | 19.1" | 14 | 19 | 26° – 35° |
| Year | 60° | 31° | 22.5" | 61.0" | 98 | 84 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 23° to 38°. September is the most reliable, staying within 7°.
Where Fort Klamath’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 Fort Klamath’s center.
- Snow: Chiloquin 12 Nw (fort Klamath), OR (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Chiloquin 12 Nw (fort Klamath), OR, 0.1 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 Fort Klamath’s climate
What is the weather like in Fort Klamath?
A typical July afternoon reaches 84°, a January night drops to 21°, and about 61 inches of snow falls in a normal winter. Colder January nights than 55% of U.S. towns; cooler July afternoons than 64% of U.S. towns.
How cold does it get in Fort Klamath in winter?
January nights average 21°. About 216 nights a year reach 32° or below and 5 reach 0° or below. In the coldest January of the last 30 years the month averaged 23°.
How much snow does Fort Klamath get?
About 61 inches in a normal winter at Chiloquin 12 Nw (fort Klamath), OR, most of it in December, with snow on the ground about 84 days a year.
How hot does it get in Fort Klamath?
July, with a typical high of 84° and a low of 44°. About 18 days a year reach 90° (Chiloquin 12 Nw (fort Klamath), OR).
When is the first and last frost in Fort Klamath?
There is no reliable frost-free season: at Chiloquin 12 Nw (fort Klamath), OR, every month has nights at 32° or below, about 216 a year. In half of years the longest stretch without a freeze is about 59 days.
What growing zone is Fort Klamath in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −4°.
What is the best time of year to visit Fort Klamath?
By one simple rule (highs of 62–84° and lows of 40° or more), July and August. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Fort Klamath getting warmer?
Yes: 1991–2020 averaged 1.5° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 58% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Fort Klamath.
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.