Annette Island, AK 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 Annette Island's primary NOAA station, ANNETTE ISLAND AP.
The climate verdict for Annette Island
Water is the standout signal in Annette Island, Alaska: 103.5 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 48°F. At 43/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 10% of scores.
- 48°F
- yearly average temperature, NOAA normal
- 43/100
- comfort score, above 10% of station-mapped location scores
- 103.5"
- annual precipitation · 35" snow
- 210 days
- frost-free days per growing season
Annette Island: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00025308 · Annette Island, AK 48°F mean · 103.5" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-WET · SWING-NARROW · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 48°F
- RANK-COOL #2,058
- PHOTO-FINISH ≈ Big Bear Lake
- PRCP-WET 103.5"
- SWING-NARROW 22°F
- COMF-LOW 43/100
- LOAD-HEAT 6,325 HDD
- STN-1 USW00025308
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Big Bear Lake, CA (+ 0.3 °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.
- Annette Island (this station) 48°F
- Hot Tolt S Fork Rsvr, WA 48°F
- Near Big Bear Lake, CA 48°F
- Near Lake Spaulding, CA 48°F
- Cold Beaver Falls, AK 47°F
Annette Island 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 · Annette Island
Annette Island: 50/100 · grade D
Annette Island publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Annette Island, not an official NOAA rating. Rankings still use Comfort Score 43/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Frost-free season | 210 days/year | 71/100 · B |
| Snowfall burden | 34.8 inches/year | 33/100 · F |
| Annual temperature balance | 47.7°F · 19.8° from 67.5°F | 30/100 · F |
| Precipitation balance | 103.5 in · 68.5 from 35 in | 0/100 · F |
Annette Island · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Annette Island is a temperate Köppen climate: Cfb
Coldest-month mean 37.7°F and warmest-month mean 60.0°F place this station in temperate, no dry season, warm summer climates (Cfb). Class Cfb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, warm summer.
- Köppen code
- Cfb
- Group
- Temperate
- Warmest month
- 60.0°F
- Coldest month
- 37.7°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 Annette Island sits across the climate record
Three NOAA fields for Annette Island's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 70%
- Among 6,861 stations, Annette Island sits in the cooler third of annual means.
- Annual precipitation
- Top 1% wettest
- Annette Island's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 96%
- Warmest-to-coldest month gap for Annette Island is compact versus 6,861 complete station-years.
How Annette Island compares across U.S. station-mapped locations
Annette Island's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
43 10th percentile score exceeds 10% 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
Annette Island's measured station temperature trend
MethodologyAcross 62 complete annual observations from 1942 to 2017, ANNETTE ISLAND AP warmed at a fitted rate of 0.16°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Annette Island primary station fitted change +0.16 °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) | 33°F (0°C) | 38°F (3°C) | 10.4" | 7.0" | 14.1 | 0.0 |
| February | 44°F (7°C) | 33°F (0°C) | 38°F (3°C) | 7.7" | 7.3" | 13.9 | 0.0 |
| March | 46°F (8°C) | 34°F (1°C) | 40°F (5°C) | 7.9" | 7.8" | 12.0 | 0.0 |
| April | 52°F (11°C) | 39°F (4°C) | 45°F (7°C) | 7.2" | 1.0" | 3.0 | 0.0 |
| May | 59°F (15°C) | 45°F (7°C) | 52°F (11°C) | 5.5" | 0.0" | 0.1 | 0.0 |
| June | 63°F (17°C) | 50°F (10°C) | 56°F (14°C) | 5.1" | 0.0" | 0.0 | 0.1 |
| July | 66°F (19°C) | 54°F (12°C) | 60°F (15°C) | 5.2" | 0.0" | 0.0 | 0.0 |
| August | 66°F (19°C) | 54°F (12°C) | 60°F (16°C) | 7.9" | 0.0" | 0.0 | 0.0 |
| September | 61°F (16°C) | 49°F (10°C) | 55°F (13°C) | 10.2" | 0.0" | 0.0 | 0.0 |
| October | 54°F (12°C) | 42°F (6°C) | 48°F (9°C) | 12.9" | 0.0" | 1.9 | 0.0 |
| November | 47°F (8°C) | 37°F (3°C) | 42°F (5°C) | 12.6" | 3.6" | 8.8 | 0.0 |
| December | 43°F (6°C) | 34°F (1°C) | 38°F (3°C) | 11.0" | 8.1" | 14.0 | 0.0 |
The year, day by day
The calendar barely moves in Annette Island: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 32°F near January 7 and 67°F near July 31.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 32°F around January 7.
Where the wet dates fall
The likeliest wet date is November 12, when 77% of years recorded at least a hundredth of an inch. The driest is July 30 at 47%. Summed across the calendar, that is about 232 wet dates a year.
The widest day
May 17 carries the biggest normal gap between afternoon and dawn, 14°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Annette Island.
Where Annette Island Stands Nationally
This is one of the wettest normals climates ranked: about 104 inches of precipitation in a normal year, a total fewer than one station in ten surpasses.
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 14°F.
Annette Island 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: 7.0"
21.9 days with precipitation
Snow: 7.3"
17.9 days with precipitation
Snow: 7.8"
22.0 days with precipitation
Snow: 1.0"
19.1 days with precipitation
15.3 days with precipitation
15.5 days with precipitation
15.4 days with precipitation
15.8 days with precipitation
19.5 days with precipitation
22.5 days with precipitation
Snow: 3.6"
23.3 days with precipitation
Snow: 8.1"
23.2 days with precipitation
Annette Island spreads its precipitation across the year
Neither half of the year dominates here: June through August take 18% of the annual total and December through February 28%, with neither reaching the 35% that would mark a distinct wet season. Annette Island has no dry season to plan around, though it does carry an unusually narrow 22.3°F seasonal spread.
The gap between the wettest and driest month still matters: October averages 12.9" and June 5.1". The three wettest months together take 35% 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.
When it rains in Annette Island, it arrives in quantity
103.5" of precipitation falls across only about 231 wet days here, averaging 0.45 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 231 a year, 63% of all days
- Average depth per wet day
- 0.45 inches
- Most wet days
- November, about 23
- Fewest wet days
- May, about 15
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Winter brings real snow to Annette Island
Annette Island averages 34.8 inches of snowfall a year, with December the snowiest month on the normals, spread across roughly 24 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: 34.8 inches of depth.
- Days recording measurable snow: about 24 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 3% 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 31
50% probability date
Last Spring Freeze
April 4
50% probability date
Growing Season
210 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,325
Higher = more heating needed
Cooling Degree Days
28
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside AK closest to Annette Island 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 (48°F here).
- Batavia, NY 48°F · 0.0°F off
- Belchertown, MA 48°F · 0.0°F off
- Briggsdale, CO 48°F · 0.0°F off
- Canby, CA 48°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (103.5" here), excluding temperature-peer places.
- Baring, WA 109.9" · 6.4" off
- Naselle, WA 112.2" · 8.7" off
- Cougar, WA 115.3" · 11.8" off
- Paauilo, HI 90.4" · 13.1" off
Snow and freeze rhythm
When cold and snow define Annette Island
heating led · wet · low swing
Heating is the larger measured load in Annette Island, at 6,325 degree days versus 28 for cooling. Unlike a strongly continental record, however, its 22.3°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Annette Island's frost-free season lasts about 210 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
-
1. Annette Island coldest normal
January
The coldest month still averages 38°F (3°C), above freezing, so this calendar has no hard winter.
-
2. Annette Island typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Annette Island snow peak
December
Annette Island averages 34.8 inches of snow a year, with December the snowiest month on the normals.
Questions about Annette Island's climate
How much snow does Annette Island get? ▼
How much energy does heating and cooling require in Annette Island? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Annette Island's primary station: ANNETTE ISLAND AP (USW00025308). 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 Annette Island; 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 Annette Island 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.