Summer Lake, OR Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Summer Lake's primary NOAA station, SUMMER LAKE 1 S.
The climate verdict for Summer Lake
Dryness leads the climate profile for Summer Lake, Oregon, with 13.1 inches of precipitation a year. NOAA records an annual average of 49°F. At 54/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 31% of scores.
- 49°F
- average temperature, NOAA 1991-2020 normal
- 54/100
- comfort score, above 31% of station-mapped location scores
- 13.1"
- annual precipitation · 7" snow
- 99 days
- growing season, frost-free days
Summer Lake: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00358173 · Summer Lake, OR 49°F mean · 13.1" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 49°F
- RANK-COOL #2,401
- PHOTO-FINISH ≈ Maxwell
- PRCP-DRY 13.1"
- SWING-MID 38°F
- COMF-LOW 54/100
- LOAD-HEAT 6,240 HDD
- STN-1 USC00358173
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Maxwell, NM ( -0.1 °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.
- Summer Lake (this station) 49°F
- Cold Lee Vining, CA 49°F
- Hot Barnes, OR 49°F
- Near Maxwell, NM 49°F
- Near Cuba, NM 49°F
Climate Living Index · Summer Lake
Summer Lake: 24/100 · grade F
Summer Lake publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Summer Lake, not an official NOAA rating. Rankings still use Comfort Score 54/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 7.4 inches/year | 67/100 · C |
| Annual temperature balance | 48.8°F · 18.7° from 67.5°F | 35/100 · F |
| Precipitation balance | 13.1 in · 21.9 from 35 in | 22/100 · F |
| Normal heat + freeze calendar | 221 calendar days | 5/100 · F |
| Frost-free season | 99 days/year | 0/100 · F |
Summer Lake · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Summer Lake is a continental Köppen climate: Dsb
Coldest-month mean 31.7°F and warmest-month mean 69.4°F place this station in continental, dry-summer, warm summer climates (Dsb). Class Dsb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, dry-summer, warm summer.
- Köppen code
- Dsb
- Group
- Continental
- Warmest month
- 69.4°F
- Coldest month
- 31.7°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 Summer Lake sits across the climate record
Three NOAA fields for Summer Lake's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 35th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 87%
- Summer Lake's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 74%
- Warmest-to-coldest month gap for Summer Lake is compact versus 6,861 complete station-years.
How Summer Lake compares across U.S. station-mapped locations
Summer Lake's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
54 31st percentile score exceeds 31% 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
Summer Lake's measured station temperature trend
MethodologyAcross 57 complete annual observations from 1958 to 2023, SUMMER LAKE 1 S warmed at a fitted rate of 0.09°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Summer Lake primary station fitted change +0.09 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 44°F (7°C) | 22°F (-6°C) | 33°F (0°C) | 1.6" | 2.0" | 25.3 | 0.0 |
| February | 48°F (9°C) | 23°F (-5°C) | 35°F (2°C) | 1.2" | 1.6" | 21.7 | 0.0 |
| March | 54°F (12°C) | 27°F (-3°C) | 41°F (5°C) | 1.2" | 0.5" | 20.5 | 0.0 |
| April | 60°F (16°C) | 31°F (-1°C) | 46°F (8°C) | 1.2" | 0.0" | 13.7 | 0.0 |
| May | 70°F (21°C) | 37°F (3°C) | 54°F (12°C) | 1.4" | 0.0" | 4.1 | 0.6 |
| June | 79°F (26°C) | 43°F (6°C) | 61°F (16°C) | 0.8" | 0.0" | 0.7 | 3.7 |
| July | 90°F (32°C) | 49°F (9°C) | 69°F (21°C) | 0.4" | 0.0" | 0.0 | 17.9 |
| August | 89°F (32°C) | 47°F (8°C) | 68°F (20°C) | 0.4" | 0.0" | 0.1 | 15.4 |
| September | 81°F (27°C) | 40°F (4°C) | 60°F (16°C) | 0.6" | 0.0" | 1.5 | 4.8 |
| October | 66°F (19°C) | 32°F (0°C) | 49°F (9°C) | 0.9" | 0.0" | 13.2 | 0.2 |
| November | 51°F (11°C) | 26°F (-4°C) | 38°F (3°C) | 1.5" | 0.8" | 20.7 | 0.0 |
| December | 43°F (6°C) | 21°F (-6°C) | 32°F (0°C) | 1.9" | 2.5" | 25.6 | 0.0 |
The year, day by day
Summer Lake works both ends of the calendar. Normal highs climb to 92°F by July 25 and hold at or above 90°F on 27 dates, then normal lows drop to freezing or below on 194 dates, bottoming at 20°F around December 23.
When the heat sits
Normal highs reach 90°F from July 14 through August 9, covering 27 dates. The broader mild season, normal highs of 70°F or more, runs May 15 to October 9.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
The freezing stretch
The normal low stays at or below 32°F into April 24, then returns to freezing around October 14, covering 194 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 April 7, when 42% of years recorded at least a hundredth of an inch. The driest is August 21 at 10%. Summed across the calendar, that is about 107 wet dates a year.
The widest day
August 28 carries the biggest normal gap between afternoon and dawn, 42°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Summer Lake.
Where Summer Lake Stands Nationally
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 42°F, sharper than nine in ten ranked stations see.
Freezing is routine here by normals standards — the normal low reaches 32°F or colder on about 194 nights a year, more than most ranked stations.
Summer Lake earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 2.0"
12.5 days with precipitation
Snow: 1.6"
10.9 days with precipitation
Snow: 0.5"
12.3 days with precipitation
12.9 days with precipitation
10.6 days with precipitation
6.7 days with precipitation
3.5 days with precipitation
3.0 days with precipitation
3.8 days with precipitation
7.2 days with precipitation
Snow: 0.8"
10.9 days with precipitation
Snow: 2.5"
12.6 days with precipitation
Summer Lake's wet season runs through the cold months
December, January and February carry 35% of the year's precipitation here, while June through August contribute 12%. 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 37.7°F seasonal spread.
- Wettest month
- December, 1.9"
- Driest month
- July, 0.4"
- Wettest three months
- December, January, November (38% 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.
Summer Lake is dry, and what does fall arrives gently
Only about 107 days a year record measurable precipitation here, 29% of the calendar, and they carry 13.1" between them. At roughly 0.12 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 April at about 13 wet days; the driest is August at about 3.
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.
Snow reaches Summer Lake, but rarely amounts to much
The normals record 7.4 inches of snow a year here, most likely in December. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation; about 4 days a year record any measurable snow at all.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
September 15
50% probability date
Last Spring Freeze
June 8
50% probability date
Growing Season
99 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,240
Higher = more heating needed
Cooling Degree Days
353
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside OR closest to Summer Lake 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 (49°F here).
- Arthur, NE 49°F · 0.0°F off
- Buffalo, NY 49°F · 0.0°F off
- Canandaigua, NY 49°F · 0.0°F off
- Cedaredge, CO 49°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (13.1" here), excluding temperature-peer places.
- Manti, UT 13.1" · 0.0" off
- White Sulphur Springs, MT 13.0" · 0.0" off
- Laramie, WY 13.1" · 0.0" off
- Malad City, ID 13.1" · 0.0" off
Scarce-water calendar
Where Summer Lake's limited precipitation lands
heating led · dry · mid swing
Summer Lake's energy balance leans toward cold weather: 6,240 annual heating degree days against 353 for cooling. Its 37.7°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 99 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 Summer Lake's middle-range seasonal profile. The measured spread is 37.7°F. The annual average is 49°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Summer Lake's cold-season load does not imply a wet climate. Annual precipitation is 13.1 inches, which places the station in PlainClimate's dry range. Annual snowfall totals 7.4 inches. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
Summer Lake wettest normal
December
December concentrates the scarce annual total (13.1 inches).
Summer Lake driest normal
July
July is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Summer Lake's climate
How dry is Summer Lake? ▼
How many days above 90°F does Summer Lake get? ▼
How much energy does heating and cooling require in Summer Lake? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Summer Lake's primary station: SUMMER LAKE 1 S (USC00358173). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Summer Lake; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Summer Lake 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.