Klamath Falls, OR Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Klamath Falls's primary NOAA station, KLAMATH FALLS INTL AP.
The climate verdict for Klamath Falls
Dryness leads the climate profile for Klamath Falls, Oregon, with 11.1 inches of precipitation a year. NOAA records an annual average of 47°F. At 52/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 24% of scores.
- 47°F
- yearly average temperature, NOAA normal
- 52/100
- comfort score, above 24% of station-mapped location scores
- 11.1"
- yearly precipitation total
- 101 days
- frost-free days per growing season
Klamath Falls: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00094236 · Klamath Falls, OR 47°F mean · 11.1" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-ARID · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 47°F
- RANK-COOL #1,921
- PHOTO-FINISH ≈ Sines Deep Creek
- PRCP-ARID 11.1"
- SWING-MID 37°F
- COMF-LOW 52/100
- LOAD-HEAT 6,710 HDD
- STN-1 USW00094236
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Sines Deep Creek, MD (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every OR station list.
- Klamath Falls (this station) 47°F
- Cold Mt Charleston F…, NV 47°F
- Hot Alton, UT 47°F
- Near Sines Deep Creek, MD 47°F
- Near Marlinton, WV 47°F
Climate Living Index · Klamath Falls
Klamath Falls: 23/100 · grade F
Klamath Falls publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals); 1 missing weight rescale to 100.
PlainClimate-derived for Klamath Falls, not an official NOAA rating. Rankings still use Comfort Score 52/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Summer moisture balance | 43.9°F mean dew point | 55/100 · C |
| Annual temperature balance | 47.1°F · 20.4° from 67.5°F | 28/100 · F |
| Precipitation balance | 11.1 in · 23.9 from 35 in | 16/100 · F |
| Normal heat + freeze calendar | 203 calendar days | 12/100 · F |
| Frost-free season | 101 days/year | 0/100 · F |
Klamath Falls · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Klamath Falls's normals sit in a dry climate class: BSk
Precipitation is low relative to temperature but above true desert thresholds: cold semi-arid steppe (BSk). Class BSk is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically cold semi-arid steppe.
- Köppen code
- BSk
- Group
- Dry (arid or semi-arid)
- Warmest month
- 67.1°F
- Coldest month
- 30.4°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Klamath Falls sits across the climate record
Three NOAA fields for Klamath Falls's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 72%
- Among 6,861 stations, Klamath Falls sits in the cooler third of annual means.
- Annual precipitation
- Drier than 92%
- Klamath Falls's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 78%
- Warmest-to-coldest month gap for Klamath Falls is compact versus 6,861 complete station-years.
How Klamath Falls compares across U.S. station-mapped locations
Klamath Falls's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
52 24th percentile score exceeds 24% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). This entry sits in this band.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 42°F (5°C) | 22°F (-6°C) | 32°F (0°C) | 1.5" | 28.0 | 0.0 |
| February | 46°F (8°C) | 24°F (-5°C) | 35°F (2°C) | 1.1" | 24.9 | 0.0 |
| March | 52°F (11°C) | 27°F (-3°C) | 39°F (4°C) | 1.0" | 25.3 | 0.0 |
| April | 58°F (14°C) | 29°F (-2°C) | 44°F (6°C) | 1.1" | 20.7 | 0.0 |
| May | 67°F (20°C) | 36°F (2°C) | 52°F (11°C) | 1.0" | 8.8 | 0.1 |
| June | 76°F (25°C) | 41°F (5°C) | 59°F (15°C) | 0.7" | 2.1 | 1.5 |
| July | 86°F (30°C) | 48°F (9°C) | 67°F (19°C) | 0.2" | 0.0 | 9.4 |
| August | 85°F (29°C) | 47°F (8°C) | 66°F (19°C) | 0.3" | 0.1 | 5.8 |
| September | 78°F (25°C) | 39°F (4°C) | 58°F (15°C) | 0.3" | 3.3 | 1.4 |
| October | 64°F (18°C) | 31°F (-1°C) | 47°F (9°C) | 0.7" | 19.1 | 0.0 |
| November | 49°F (10°C) | 25°F (-4°C) | 37°F (3°C) | 1.4" | 23.9 | 0.0 |
| December | 40°F (5°C) | 21°F (-6°C) | 30°F (-1°C) | 1.8" | 27.9 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 88°F around July 23, short of 90°F on every date, while 203 dates carry a normal low at or below freezing, the coldest 20°F near December 18.
The freezing stretch
The normal low stays at or below 32°F into April 29, then returns to freezing around October 10, covering 203 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is December 9, when 39% of years recorded at least a hundredth of an inch. The driest is July 25 at 6%. Summed across the calendar, that is about 88 wet dates a year.
The widest day
September 8 carries the biggest normal gap between afternoon and dawn, 39°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Klamath Falls.
Where Klamath Falls Stands Nationally
Winters bite deep and often: the normal nightly low dips to freezing or below on around 203 nights a year, placing this among the most frost-prone tenth of ranked stations.
Aridity defines the water calendar: about 11 inches in a normal year lands this among the driest tenth of ranked stations.
Klamath Falls earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
10.9 days with precipitation
9.4 days with precipitation
10.7 days with precipitation
9.1 days with precipitation
8.4 days with precipitation
4.7 days with precipitation
1.6 days with precipitation
2.4 days with precipitation
2.6 days with precipitation
5.6 days with precipitation
10.4 days with precipitation
12.2 days with precipitation
Klamath Falls's wet season runs through the cold months
December, January and February carry 40% of the year's precipitation here, while June through August contribute 10%. That is the cool-season-dominant pattern of the West Coast and the higher inland West, where storm tracks swing south in winter and summer turns dry; the thermometer meanwhile shows a 36.7°F seasonal spread.
- Wettest month
- December, 1.8"
- Driest month
- July, 0.2"
- Wettest three months
- December, January, November (42% of the year)
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A cool-season label means the December-February share reaches 35%. Where snow falls, the monthly figures above report liquid-equivalent precipitation, so a wet winter month is not necessarily a rainy one.
Klamath Falls is dry, and what does fall arrives gently
Only about 88 days a year record measurable precipitation here, 24% of the calendar, and they carry 11.1" between them. At roughly 0.13 inches on an average wet day, this is not the damp drizzle of a marine climate; it is an arid record in which precipitation is both uncommon and light when it appears.
The wettest month by count is December at about 12 wet days; the driest is July at about 2.
A low per-event average in a dry record is a statement about typical days only. Arid regions can still take a large share of a year's total from a single convective storm, which a normal cannot show.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, not the extremes within it.
Frost Dates & Growing Season
First Fall Freeze
September 18
50% probability date
Last Spring Freeze
June 9
50% probability date
Growing Season
101 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,710
Higher = more heating needed
Cooling Degree Days
217
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 76% | 6.3 | 30% | 28% |
| February | 71% | 7.4 | 28% | 27% |
| March | 64% | 8.0 | 27% | 22% |
| April | 57% | 7.7 | 35% | 16% |
| May | 57% | 7.1 | 36% | 13% |
| June | 51% | 6.4 | 52% | 4% |
| July | 50% | 5.5 | 57% | 2% |
| August | 51% | 5.4 | 59% | 2% |
| September | 55% | 5.2 | 54% | 5% |
| October | 68% | 5.5 | 38% | 19% |
| November | 79% | 5.9 | 31% | 28% |
| December | 81% | 6.0 | 28% | 32% |
Nationwide similar cities
Other rankable U.S. places outside OR closest to Klamath Falls on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (47°F here).
- Auburn, MI 47°F · 0.0°F off
- Brigham City, UT 47°F · 0.0°F off
- Casper, WY 47°F · 0.0°F off
- Durham, NH 47°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (11.1" here), excluding temperature-peer places.
- Dinosaur, CO 11.2" · 0.0" off
- Baggs, WY 11.2" · 0.0" off
- Gildford, MT 11.1" · 0.0" off
- Alcalde, NM 11.1" · 0.0" off
Scarce-water calendar
Where Klamath Falls's limited precipitation lands
heating led · dry · mid swing
Klamath Falls's energy balance leans toward cold weather: 6,710 annual heating degree days against 217 for cooling. Its 36.7°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 101 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
July and December mark the typical warm and cold ends of the calendar in Klamath Falls's middle-range seasonal profile. The measured spread is 36.7°F. The annual average is 47°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Klamath Falls's cold-season load does not imply a wet climate. Annual precipitation is 11.1 inches, which places the station in PlainClimate's dry range. Snowfall is not added to the interpretation because its annual value is missing. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
Klamath Falls wettest normal
December
December concentrates the scarce annual total (11.1 inches).
Klamath Falls driest normal
July
July is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Klamath Falls's climate
How dry is Klamath Falls? ▼
How cold does Klamath Falls get in winter? ▼
How much energy does heating and cooling require in Klamath Falls? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Klamath Falls's primary station: KLAMATH FALLS INTL AP (USW00094236). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 4139700). Match rule for Klamath Falls: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Klamath Falls comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.