Seldovia, Alaska climate: Normal weather by month, frost dates and records
Seldovia's normal year runs from 21°F January nights to 62°F July afternoons, with 40.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 4.2°C, January lows of −6°C, July highs of 17°C, 1,026 mm of precipitation a year.
- NOAA stationSeldovia Airport
- Station IDUSW00025516
- Location59.44°N 151.70°W
- Elevation29 ft (9 m)
- Population250
On October 23, the normal high in Seldovia is 43°F and the normal low 32°F, and the chance of measurable rain or snow is 57%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Seldovia.
- Jan 31° 21°
- Feb 34° 23°
- Mar 36° 24°
- Apr 43° 31°
- May 51° 37°
- Jun 58° 44°
- Jul 62° 49°
- Aug 62° 48°
- Sep 55° 42°
- Oct 45° 34°
- Nov 36° 27°
- Dec 33° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Seldovia each month?
July is the warmest month, with normal highs of 62°F; January the coldest, with normal lows of 21°F. The most precipitation falls in December (6.74 in), the least in May (1.15 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 31°F | 21°F | 25.8°F | 3.87 | 15 | <1 | 27 | 6 h 50 min |
| February | 34°F | 23°F | 28.4°F | 3.68 | 15 | <1 | 25 | 9 h 10 min |
| March | 36°F | 24°F | 29.5°F | 3.19 | 13 | <1 | 27 | 11 h 40 min |
| April | 43°F | 31°F | 36.9°F | 2.80 | 13 | <1 | 19 | 14 h 30 min |
| May | 51°F | 37°F | 44.3°F | 1.15 | 12 | <1 | 5 | 17 h |
| June | 58°F | 44°F | 50.9°F | 1.15 | 11 | <1 | <1 | 18 h 40 min |
| July | 62°F | 49°F | 55.4°F | 1.58 | 13 | <1 | <1 | 18 h |
| August | 62°F | 48°F | 54.7°F | 2.71 | 15 | <1 | <1 | 15 h 40 min |
| September | 55°F | 42°F | 48.6°F | 4.09 | 18 | <1 | 2 | 13 h |
| October | 45°F | 34°F | 39.7°F | 4.60 | 18 | <1 | 13 | 10 h 20 min |
| November | 36°F | 27°F | 31.5°F | 4.83 | 17 | <1 | 23 | 7 h 40 min |
| December | 33°F | 24°F | 28.2°F | 6.74 | 18 | <1 | 27 | 6 h 10 min |
| Year (annual) | 45°F | 34°F | 39.5°F | 40.39 | 179 | <1 | 167 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −1°C | −6°C | −3.4°C | 98 mm |
| February | 1°C | −5°C | −2.0°C | 93 mm |
| March | 2°C | −5°C | −1.4°C | 81 mm |
| April | 6°C | −1°C | 2.7°C | 71 mm |
| May | 11°C | 3°C | 6.8°C | 29 mm |
| June | 15°C | 7°C | 10.5°C | 29 mm |
| July | 17°C | 9°C | 13.0°C | 40 mm |
| August | 16°C | 9°C | 12.6°C | 69 mm |
| September | 13°C | 6°C | 9.2°C | 104 mm |
| October | 7°C | 1°C | 4.3°C | 117 mm |
| November | 2°C | −3°C | −0.3°C | 123 mm |
| December | 0°C | −5°C | −2.1°C | 171 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Homer (8 mi NW) (21 miles away), gets 101 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00025516; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Seldovia?
No month's normal high reaches 65°F in Seldovia: the warmest is July at 62°F.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00025516.
When is the last frost in Seldovia?
In Seldovia, the last spring frost (32°F) comes after May 10 in half of years and after May 24 in one year in ten; the first autumn frost comes before October 1 in half of years and before September 17 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 101 year in 10 after May 24; 9 in 10 after April 26
- First autumn frost, half of years before
- October 11 year in 10 before September 17; 9 in 10 before October 17
NOAA puts the median frost-free season at 145 days, and the season without a hard freeze (28°F) at 177 days.
A hard freeze (28°F) comes after April 22 in half of springs and before October 15 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Seldovia in zone 6b in ZIP code 99663, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Seldovia's NOAA station is in zone 7a: the coldest night of a typical year reaches 2°F (21 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Alaska · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00025516; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Seldovia?
In a normal year in Seldovia, a 90°F day is rare, 167 nights fall to 32°F or colder and 179 days bring measurable precipitation.
- Days at 90°F or more
- fewer than 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 167a normal year
- Days that stay below freezing
- 58high of 32°F or less
- Days with 0.01 inch of precipitation
- 179a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USW00025516.
How sunny is Seldovia?
Over a year 62% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Seldovia, 2.5 kWh per square metre a day. June is the sunniest month (65%) and December the cloudiest (52%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 55% | 0.3 |
| February | 56% | 0.9 |
| March | 60% | 2.2 |
| April | 61% | 3.5 |
| May | 64% | 4.8 |
| June | 65% | 5.3 |
| July | 64% | 4.8 |
| August | 64% | 3.8 |
| September | 60% | 2.4 |
| October | 57% | 1.2 |
| November | 57% | 0.5 |
| December | 52% | 0.2 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Seldovia need?
A normal year in Seldovia brings 9,288 heating degree days, 73% more than the median U.S. place (5,373), and 1 cooling degree days, 100% fewer than the median (908). Eleven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 411 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,215 | 0 |
| February | 1,025 | 0 |
| March | 1,100 | 0 |
| April | 842 | 0 |
| May | 643 | 0 |
| June | 423 | 0 |
| July | 298 | 0 |
| August | 320 | 0 |
| September | 494 | 0 |
| October | 783 | 0 |
| November | 1,005 | 0 |
| December | 1,141 | 0 |
| Year (annual) | 9,288 | 1 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00025516. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Seldovia been warmer than normal lately?
2025 averaged 41.0°F, 1.5°F above the 1991-2020 normal of 39.5°F. 3 of the 3 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 40.8°F | +1.3°F | 41.62 |
| 2023 | 40.5°F | +1.0°F | 30.70 |
| 2025 | 41.0°F | +1.5°F | – |
Source: observed years: ACIS, station USW00025516. A year counts only with all twelve months complete.
How does Seldovia's climate compare?
Seldovia is warmer than 57 of the other 84 places with their own NOAA record in Alaska, and wetter than 48. Across the 7,247 U.S. stations with normals, its annual mean of 39.5°F is warmer than 5%.
In the Köppen classification computed from these normals, Seldovia is Dsc: continental, dry-summer, cool summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Seldovia share this climate record?
3 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Nanwalek, AK208 people · 11 mi SW
- Seldovia Village, AK207 people · 4 mi E
- Port Graham, AK125 people · 9 mi SW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Seldovia's climate
What is the coldest month in Seldovia?
January, with a normal high of 31°F and a normal low of 21°F. The warmest is July (62°F by day, 49°F at night).
Does it snow in Seldovia?
Yes. NOAA publishes no 1991-2020 snowfall normal for Seldovia's NOAA station; the nearest record that keeps one, Homer (8 mi NW) (21 miles away), records 101 inches of snow in a normal year.
What is the rainiest month in Seldovia?
December, with 6.74 in of precipitation in a normal year; the driest is May with 1.15 in.
What plant hardiness zone is Seldovia in?
The USDA's 2023 map puts Seldovia in zone 6b in ZIP code 99663, the nearest ZIP area. By the same method at Seldovia's NOAA station, the coldest night of a typical year reaches 2°F (21 years, 1991-2020): zone 7a.
How late can frost come in Seldovia?
In half of years the last 32°F night comes after May 10; in one year in ten it comes after May 24. Waiting until May 24 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Alaska climateThe statewide normals and every place in the state
- Homer, AK16 miles from this station, 40.1°F a year
- Soldotna, AK70 miles from this station, 34.1°F a year
- Sterling, AK77 miles from this station, 35.7°F a year
- Kenai, AK80 miles from this station, 35.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made