St. Paul, AK Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from St. Paul's primary NOAA station, ST. PAUL 4 NE.
The climate verdict for St. Paul
A compact 24.2°F seasonal swing gives St. Paul, Alaska a steadier-than-extreme annual shape. NOAA reports an annual average of 35°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.
- 35°F
- average temperature, NOAA 1991-2020 normal
- 52/100
- comfort score, above 24% of station-mapped location scores
- 24.9"
- annual precipitation
- 115 days
- growing season, frost-free days
St. Paul: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00025711 · St. Paul, AK 35°F mean · 24.9" precip
TEMP-COLD · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-NARROW · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COLD 35°F
- RANK-COOL #137
- PHOTO-FINISH ≈ Walden
- PRCP-DRY 24.9"
- SWING-NARROW 24°F
- COMF-LOW 52/100
- LOAD-HEAT 10,790 HDD
- STN-1 USW00025711
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Walden, CO ( -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 AK station list.
- St. Paul (this station) 35°F
- Cold Boulder, CO 35°F
- Near Walden, CO 35°F
- Near Wisdom, MT 35°F
- Near Sugarloaf Rsvr, CO 35°F
St. Paul sits in Alaska, the #1 coldest U.S. state at 33.5°F statewide annual average - see all 50 coldest states ranked by NOAA normals
Climate Living Index · St. Paul
St. Paul: 18/100 · grade F
St. Paul publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for St. Paul, not an official NOAA rating. Rankings still use Comfort Score 52/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 24.9 in · 10.1 from 35 in | 65/100 · C |
| Normal heat + freeze calendar | 203 calendar days | 12/100 · F |
| Frost-free season | 115 days/year | 5/100 · F |
| Annual temperature balance | 35.4°F · 32.1° from 67.5°F | 0/100 · F |
St. Paul · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
St. Paul falls in the polar Köppen band: ET
The warmest month stays below 10°C: tundra class (ET). Class ET is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: polar, specifically tundra.
- Köppen code
- ET
- Group
- Polar
- Warmest month
- 48.9°F
- Coldest month
- 24.7°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 St. Paul sits across the climate record
Three NOAA fields for St. Paul's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 98%
- Among 6,861 stations, St. Paul sits in the cooler third of annual means.
- Annual precipitation
- 34th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 95%
- Warmest-to-coldest month gap for St. Paul is compact versus 6,861 complete station-years.
How St. Paul compares across U.S. station-mapped locations
St. Paul'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 | 29°F (-2°C) | 21°F (-6°C) | 25°F (-4°C) | 1.6" | 27.2 | 0.0 |
| February | 29°F (-1°C) | 21°F (-6°C) | 25°F (-4°C) | 1.5" | 24.1 | 0.0 |
| March | 29°F (-2°C) | 20°F (-7°C) | 25°F (-4°C) | 1.3" | 28.4 | 0.0 |
| April | 33°F (1°C) | 25°F (-4°C) | 29°F (-2°C) | 1.2" | 25.0 | 0.0 |
| May | 40°F (5°C) | 32°F (0°C) | 36°F (2°C) | 1.2" | 17.0 | 0.0 |
| June | 47°F (8°C) | 38°F (3°C) | 43°F (6°C) | 1.4" | 3.4 | 0.0 |
| July | 51°F (11°C) | 44°F (7°C) | 47°F (8°C) | 2.0" | 0.3 | 0.0 |
| August | 53°F (11°C) | 45°F (7°C) | 49°F (9°C) | 3.0" | 0.3 | 0.0 |
| September | 50°F (10°C) | 41°F (5°C) | 45°F (7°C) | 3.0" | 2.7 | 0.0 |
| October | 43°F (6°C) | 34°F (1°C) | 39°F (4°C) | 3.4" | 10.5 | 0.0 |
| November | 38°F (3°C) | 29°F (-1°C) | 34°F (1°C) | 3.0" | 18.7 | 0.0 |
| December | 33°F (1°C) | 24°F (-5°C) | 29°F (-2°C) | 2.4" | 23.9 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 53°F around August 9, short of 90°F on every date, while 203 dates carry a normal low at or below freezing, the coldest 20°F near March 10.
The freezing stretch
The normal low stays at or below 32°F into May 16, then returns to freezing around October 27, 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 November 13, when 77% of years recorded at least a hundredth of an inch. The driest is June 8 at 42%. Summed across the calendar, that is about 212 wet dates a year.
The widest day
October 7 carries the biggest normal gap between afternoon and dawn, 10°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for St. Paul.
Where St. Paul 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.
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 10°F.
St. Paul earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
17.4 days with precipitation
16.1 days with precipitation
16.1 days with precipitation
14.0 days with precipitation
14.1 days with precipitation
12.2 days with precipitation
14.8 days with precipitation
17.7 days with precipitation
20.3 days with precipitation
23.4 days with precipitation
22.8 days with precipitation
22.8 days with precipitation
St. Paul spreads its precipitation across the year
Neither half of the year dominates here: June through August take 26% of the annual total and December through February 22%, with neither reaching the 35% that would mark a distinct wet season. St. Paul has no dry season to plan around, though it does carry an unusually narrow 24.2°F seasonal spread.
The gap between the wettest and driest month still matters: October averages 3.4" and April 1.2". The three wettest months together take 38% 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.
Rain reaches St. Paul in small, frequent amounts
St. Paul records about 212 days with measurable precipitation a year and 24.9" in total, which works out to roughly 0.12 inches on an average wet day. Precipitation on 58% of all days, arriving that lightly, is the damp many-grey-days pattern rather than the storm-driven one.
Places in this band read as wetter than their annual totals suggest, because what people notice is the number of overcast days, not the depth in the gauge.
- Most wet days: October, about 23 of them.
- Fewest: June, about 12.
- Average depth per wet day: 0.12 inches.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Frost Dates & Growing Season
First Fall Freeze
September 28
50% probability date
Last Spring Freeze
June 5
50% probability date
Growing Season
115 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
10,790
Higher = more heating needed
Cooling Degree Days
0
Higher = more cooling needed
Warmest Month
August
Coldest Month
March
Nationwide similar cities
Other rankable U.S. places outside AK closest to St. Paul 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 (35°F here).
- Dillon, CO 36°F · 0.1°F off
- Walden, CO 35°F · 0.1°F off
- Boulder, CO 35°F · 0.2°F off
- Wisdom, MT 35°F · 0.2°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (24.9" here), excluding temperature-peer places.
- Atkinson, NE 24.9" · 0.0" off
- Marshfield, WI 24.9" · 0.0" off
- Alta, WY 25.0" · 0.1" off
- Hays, KS 24.8" · 0.1" off
Data-derived climate profile
How St. Paul's climate pattern fits together
heating led · moderate · low swing
Heating is the larger measured load in St. Paul, at 10,790 degree days versus 0 for cooling. Unlike a strongly continental record, however, its 24.2°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Only about 115 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.
Temperature varies within a narrow 24.2°F band across the normal year. August and March mark the typical warm and cold ends of the calendar. The annual average is 35°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
St. Paul's 24.9 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from St. Paul's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for St. Paul, not an official NOAA class or a year-ahead forecast.
Questions about St. Paul's climate
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Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from St. Paul's primary station: ST. PAUL 4 NE (USW00025711). 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 0266470). Match rule for St. Paul: 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. Paul 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.