Pendleton Branch Exp Stn, 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 Pendleton Branch Exp Stn's primary NOAA station, PENDLETON BRANCH EXP STN.
The climate verdict for Pendleton Branch Exp Stn
Dryness leads the climate profile for Pendleton Branch Exp Stn, Oregon, with 17.2 inches of precipitation a year. NOAA records an annual average of 51°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.
- 51°F
- annual average temperature (NOAA normal)
- 54/100
- comfort score, above 31% of station-mapped location scores
- 17.2"
- annual precipitation · 15" snow
- 138 days
- frost-free days per growing season
Pendleton Branch Exp Stn: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00356540 · Pendleton Branch Exp Stn, OR 51°F mean · 17.2" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 51°F
- RANK-MID #2,950
- PHOTO-FINISH ≈ Walnut Canyon N…
- PRCP-DRY 17.2"
- SWING-MID 37°F
- COMF-LOW 54/100
- LOAD-HEAT 5,679 HDD
- STN-1 USC00356540
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Walnut Canyon National Monument, AZ (+ 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.
- Pendleton Branch (this station) 51°F
- Hot Walnut Canyon N…, AZ 51°F
- Near Dufur, OR 51°F
- Cold Chatham, MA 50°F
- Near Clines Corners, NM 50°F
Climate Living Index · Pendleton Branch Exp Stn
Pendleton Branch Exp Stn: 37/100 · grade F
Pendleton Branch Exp Stn publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Pendleton Branch Exp Stn, not an official NOAA rating. Rankings still use Comfort Score 54/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 14.9 inches/year | 56/100 · C |
| Annual temperature balance | 50.6°F · 16.9° from 67.5°F | 43/100 · D |
| Precipitation balance | 17.2 in · 17.8 from 35 in | 37/100 · F |
| Normal heat + freeze calendar | 171 calendar days | 31/100 · F |
| Frost-free season | 138 days/year | 17/100 · F |
Pendleton Branch Exp Stn · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Pendleton Branch Exp Stn is a temperate Köppen climate: Csb
Coldest-month mean 34.0°F and warmest-month mean 70.7°F place this station in temperate, dry-summer, warm summer climates (Csb). Class Csb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, dry-summer, warm summer.
- Köppen code
- Csb
- Group
- Temperate
- Warmest month
- 70.7°F
- Coldest month
- 34.0°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 Pendleton Branch Exp Stn sits across the climate record
Three NOAA fields for Pendleton Branch Exp Stn's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 43rd percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 78%
- Pendleton Branch Exp Stn'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 Pendleton Branch Exp Stn is compact versus 6,861 complete station-years.
How Pendleton Branch Exp Stn compares across U.S. station-mapped locations
Pendleton Branch Exp Stn'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
Pendleton Branch Exp Stn's measured station temperature trend
MethodologyAcross 47 complete annual observations from 1958 to 2024, PENDLETON BRANCH EXP STN warmed at a fitted rate of 0.17°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Pendleton Branch Exp Stn primary station fitted change +0.18 °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 | 43°F (6°C) | 27°F (-3°C) | 35°F (2°C) | 1.9" | 5.3" | 22.5 | 0.0 |
| February | 47°F (8°C) | 28°F (-2°C) | 38°F (3°C) | 1.6" | 2.5" | 19.9 | 0.0 |
| March | 55°F (13°C) | 31°F (0°C) | 43°F (6°C) | 2.0" | 0.6" | 17.8 | 0.0 |
| April | 62°F (17°C) | 35°F (2°C) | 49°F (9°C) | 1.8" | 0.0" | 10.1 | 0.0 |
| May | 70°F (21°C) | 42°F (5°C) | 56°F (13°C) | 1.9" | 0.0" | 2.9 | 0.7 |
| June | 78°F (26°C) | 47°F (8°C) | 62°F (17°C) | 1.2" | 0.0" | 0.1 | 3.4 |
| July | 90°F (32°C) | 52°F (11°C) | 71°F (22°C) | 0.3" | 0.0" | 0.0 | 16.8 |
| August | 89°F (31°C) | 50°F (10°C) | 69°F (21°C) | 0.4" | 0.0" | 0.0 | 14.3 |
| September | 79°F (26°C) | 43°F (6°C) | 61°F (16°C) | 0.6" | 0.0" | 1.4 | 3.6 |
| October | 65°F (18°C) | 35°F (2°C) | 50°F (10°C) | 1.3" | 0.2" | 10.4 | 0.1 |
| November | 51°F (10°C) | 30°F (-1°C) | 40°F (5°C) | 2.1" | 1.5" | 17.3 | 0.0 |
| December | 42°F (5°C) | 26°F (-3°C) | 34°F (1°C) | 2.1" | 4.8" | 22.7 | 0.0 |
The year, day by day
Pendleton Branch Exp Stn works both ends of the calendar. Normal highs climb to 93°F by July 26 and hold at or above 90°F on 28 dates, then normal lows drop to freezing or below on 143 dates, bottoming at 25°F around December 24.
When the heat sits
Normal highs reach 90°F from July 15 through August 11, covering 28 dates. The broader mild season, normal highs of 70°F or more, runs May 14 to October 6.
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 March 19, then returns to freezing around October 29, covering 143 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 5, when 50% of years recorded at least a hundredth of an inch. The driest is July 28 at 7%. Summed across the calendar, that is about 116 wet dates a year.
The widest day
July 25 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 Pendleton Branch Exp Stn.
Where Pendleton Branch Exp Stn Stands Nationally
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 39°F, sharper than nine in ten ranked stations see.
Pendleton Branch Exp Stn earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 5.3"
15.1 days with precipitation
Snow: 2.5"
11.6 days with precipitation
Snow: 0.6"
13.3 days with precipitation
11.9 days with precipitation
10.2 days with precipitation
7.1 days with precipitation
2.4 days with precipitation
2.3 days with precipitation
3.7 days with precipitation
Snow: 0.2"
8.6 days with precipitation
Snow: 1.5"
14.1 days with precipitation
Snow: 4.8"
15.5 days with precipitation
Pendleton Branch Exp Stn spreads its precipitation across the year
Neither half of the year dominates here: June through August take 11% of the annual total and December through February 33%, with neither reaching the 35% that would mark a distinct wet season. Pendleton Branch Exp Stn has no dry season to plan around, though it does carry a 36.7°F seasonal spread.
The gap between the wettest and driest month still matters: November averages 2.1" and July 0.3". The three wettest months together take 36% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
Pendleton Branch Exp Stn is dry, and what does fall arrives gently
Only about 116 days a year record measurable precipitation here, 32% of the calendar, and they carry 17.2" between them. At roughly 0.15 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 16 wet days; the driest is August 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.
Winter brings real snow to Pendleton Branch Exp Stn
Pendleton Branch Exp Stn averages 14.9 inches of snowfall a year, with January the snowiest month on the normals, spread across roughly 13 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 14.9 inches of depth.
- Days recording measurable snow: about 13 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 9% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
September 27
50% probability date
Last Spring Freeze
May 12
50% probability date
Growing Season
138 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,679
Higher = more heating needed
Cooling Degree Days
454
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside OR closest to Pendleton Branch Exp Stn 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 (51°F here).
- Bellefontaine, OH 51°F · 0.0°F off
- Bridgeport, NE 51°F · 0.0°F off
- Brighton, CO 51°F · 0.0°F off
- Delta, UT 51°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (17.2" here), excluding temperature-peer places.
- Fleming, CO 17.2" · 0.0" off
- Colusa, CA 17.2" · 0.0" off
- Eagle Nest, NM 17.2" · 0.0" off
- Mott, ND 17.2" · 0.0" off
Snow and freeze rhythm
When cold and snow define Pendleton Branch Exp Stn
heating led · dry · mid swing
Pendleton Branch Exp Stn's energy balance leans toward cold weather: 5,679 annual heating degree days against 454 for cooling. Its 36.7°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 138 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.
-
1. Pendleton Branch Exp Stn coldest normal
December
The monthly mean of 34°F (1°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. Pendleton Branch Exp Stn typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Pendleton Branch Exp Stn snow peak
January
Pendleton Branch Exp Stn averages 14.9 inches of snow a year, with January the snowiest month on the normals.
Questions about Pendleton Branch Exp Stn's climate
How much snow does Pendleton Branch Exp Stn get? ▼
How many days above 90°F does Pendleton Branch Exp Stn get? ▼
How much energy does heating and cooling require in Pendleton Branch Exp Stn? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Pendleton Branch Exp Stn's primary station: PENDLETON BRANCH EXP STN (USC00356540). 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 Pendleton Branch Exp Stn; 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 Pendleton Branch Exp Stn 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.