St John, WA Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from St John's primary NOAA station, ST JOHN.
The climate verdict for St John
Dryness leads the climate profile for St John, Washington, with 17.1 inches of precipitation a year. NOAA records an annual average of 49°F. At 49/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 18% of scores.
- 49°F
- yearly average temperature, NOAA normal
- 49/100
- comfort score, above 18% of station-mapped location scores
- 17.1"
- annual precipitation · 27" snow
- 158 days
- frost-free days per growing season
St John: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00457267 · St John, WA 49°F mean · 17.1" 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 #2,539
- PHOTO-FINISH ≈ Verdi
- PRCP-DRY 17.1"
- SWING-MID 38°F
- COMF-LOW 49/100
- LOAD-HEAT 6,085 HDD
- STN-1 USC00457267
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Verdi, CA ( -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 WA station list.
- Hot E Sandwich, MA 50°F
- St John (this station) 49°F
- Cold Ross Dam, WA 49°F
- Near Verdi, CA 49°F
- Near Capulin, NM 49°F
Climate Living Index · St John
St John: 48/100 · grade D
St John publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for St John, not an official NOAA rating. Rankings still use Comfort Score 49/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 104 calendar days | 74/100 · B |
| Snowfall burden | 26.6 inches/year | 42/100 · D |
| Annual temperature balance | 49.3°F · 18.2° from 67.5°F | 37/100 · F |
| Precipitation balance | 17.1 in · 17.9 from 35 in | 36/100 · F |
| Frost-free season | 158 days/year | 32/100 · F |
St John · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
St John is a continental Köppen climate: Dsb
Coldest-month mean 31.5°F and warmest-month mean 69.0°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
- 69.0°F
- Coldest month
- 31.5°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 St John sits across the climate record
Three NOAA fields for St John's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 37th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 78%
- St John's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 75%
- Warmest-to-coldest month gap for St John is compact versus 6,861 complete station-years.
How St John compares across U.S. station-mapped locations
St John's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
49 18th percentile score exceeds 18% 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%). This entry sits in this band.
- 50–60: 1,329 station-mapped locations (21%). Above this entry.
- 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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 37°F (3°C) | 29°F (-2°C) | 33°F (0°C) | 2.0" | 8.8" | 22.4 | 0.0 |
| February | 41°F (5°C) | 30°F (-1°C) | 36°F (2°C) | 1.5" | 2.7" | 20.1 | 0.0 |
| March | 49°F (10°C) | 34°F (1°C) | 42°F (5°C) | 1.9" | 1.4" | 16.4 | 0.0 |
| April | 57°F (14°C) | 38°F (3°C) | 48°F (9°C) | 1.5" | 0.4" | 9.2 | 0.0 |
| May | 66°F (19°C) | 45°F (7°C) | 56°F (13°C) | 1.6" | 0.0" | 2.2 | 0.4 |
| June | 73°F (23°C) | 50°F (10°C) | 61°F (16°C) | 1.1" | 0.0" | 0.1 | 1.8 |
| July | 84°F (29°C) | 54°F (12°C) | 69°F (21°C) | 0.4" | 0.0" | 0.0 | 11.6 |
| August | 84°F (29°C) | 53°F (12°C) | 68°F (20°C) | 0.3" | 0.0" | 0.1 | 11.2 |
| September | 74°F (23°C) | 47°F (8°C) | 60°F (16°C) | 0.6" | 0.0" | 1.4 | 2.5 |
| October | 59°F (15°C) | 39°F (4°C) | 49°F (9°C) | 1.5" | 0.1" | 9.7 | 0.0 |
| November | 44°F (7°C) | 33°F (1°C) | 39°F (4°C) | 2.1" | 2.5" | 16.2 | 0.0 |
| December | 35°F (2°C) | 28°F (-2°C) | 32°F (0°C) | 2.4" | 10.7" | 24.8 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 87°F around July 29, short of 90°F on every date, while 104 dates carry a normal low at or below freezing, the coldest 27°F near December 22.
The freezing stretch
The normal low stays at or below 32°F into March 4, then returns to freezing around November 22, covering 104 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 November 25, when 45% of years recorded at least a hundredth of an inch. The driest is August 7 at 9%. Summed across the calendar, that is about 110 wet dates a year.
The widest day
August 1 carries the biggest normal gap between afternoon and dawn, 31°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for St John.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 8.8"
13.6 days with precipitation
Snow: 2.7"
10.9 days with precipitation
Snow: 1.4"
11.9 days with precipitation
Snow: 0.4"
10.3 days with precipitation
9.1 days with precipitation
7.8 days with precipitation
3.3 days with precipitation
3.0 days with precipitation
4.4 days with precipitation
Snow: 0.1"
9.0 days with precipitation
Snow: 2.5"
13.3 days with precipitation
Snow: 10.7"
13.5 days with precipitation
St John 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 35%, with neither reaching the 35% that would mark a distinct wet season. St John has no dry season to plan around, though it does carry a 37.5°F seasonal spread.
The gap between the wettest and driest month still matters: December averages 2.4" and August 0.3". The three wettest months together take 39% 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.
St John is dry, and what does fall arrives gently
Only about 110 days a year record measurable precipitation here, 30% of the calendar, and they carry 17.1" 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 January at about 14 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.
Winter brings real snow to St John
St John averages 26.6 inches of snowfall a year, with December the snowiest month on the normals, spread across roughly 19 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: 26.6 inches of depth.
- Days recording measurable snow: about 19 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 16% 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
October 4
50% probability date
Last Spring Freeze
April 29
50% probability date
Growing Season
158 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,085
Higher = more heating needed
Cooling Degree Days
375
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside WA closest to St John 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).
- Albion, NY 49°F · 0.0°F off
- Antelope, OR 49°F · 0.0°F off
- Atlantic, IA 49°F · 0.0°F off
- Avon, IL 49°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (17.1" here), excluding temperature-peer places.
- Springer, NM 17.1" · 0.0" off
- Morgan, UT 17.1" · 0.0" off
- Stratford, TX 17.1" · 0.0" off
- Bowman, ND 17.1" · 0.0" off
Snow and freeze rhythm
When cold and snow define St John
heating led · dry · mid swing
St John's energy balance leans toward cold weather: 6,085 annual heating degree days against 375 for cooling. Its 37.5°F seasonal range still makes the monthly rows more useful than the annual average alone.
St John's frost-free season lasts about 158 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
-
1. St John coldest normal
December
The monthly mean of 32°F (0°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. St John typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. St John snow peak
December
St John averages 26.6 inches of snow a year, with December the snowiest month on the normals.
Questions about St John's climate
How much snow does St John get? ▼
How cold does St John get in winter? ▼
How much energy does heating and cooling require in St John? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from St John's primary station: ST JOHN (USC00457267). 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 5360860). Match rule for St John: 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 St John 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.