Kodiak, Alaska climate: Normal weather by month, frost dates and records
Kodiak's normal year runs from 26°F January nights to 63°F August afternoons, with 78.3 inches of precipitation and 70 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.7°C, January lows of −3°C, August highs of 17°C, 1,989 mm of precipitation a year.
- NOAA stationKodiak Airport
- Station IDUSW00025501
- Location57.75°N 152.49°W
- Elevation80 ft (24 m)
- Population5,399
On October 23, the normal high in Kodiak is 46°F and the normal low 34°F, and the chance of measurable rain or snow is 58%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Kodiak.
- Jan 36° 26°
- Feb 38° 27°
- Mar 39° 28°
- Apr 45° 34°
- May 52° 40°
- Jun 57° 46°
- Jul 62° 51°
- Aug 63° 50°
- Sep 57° 44°
- Oct 48° 36°
- Nov 41° 30°
- Dec 37° 27°
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 Kodiak each month?
August is the warmest month, with normal highs of 63°F; January the coldest, with normal lows of 26°F. The most precipitation falls in October (8.85 in), the least in July (4.51 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 36°F | 26°F | 31.2°F | 8.35 | 14.5 | 19 | <1 | 22 | 7 h 10 min |
| February | 38°F | 27°F | 32.4°F | 6.31 | 14.4 | 17 | <1 | 19 | 9 h 20 min |
| March | 39°F | 28°F | 33.2°F | 4.82 | 12.3 | 16 | <1 | 23 | 11 h 40 min |
| April | 45°F | 34°F | 39.1°F | 6.14 | 6.2 | 18 | <1 | 12 | 14 h 20 min |
| May | 52°F | 40°F | 45.8°F | 5.85 | 0.5 | 17 | <1 | 3 | 16 h 30 min |
| June | 57°F | 46°F | 51.4°F | 5.17 | 0.0 | 16 | <1 | <1 | 18 h |
| July | 62°F | 51°F | 56.2°F | 4.51 | 0.0 | 15 | <1 | <1 | 17 h 30 min |
| August | 63°F | 50°F | 56.5°F | 4.90 | 0.0 | 15 | <1 | <1 | 15 h 20 min |
| September | 57°F | 44°F | 50.6°F | 7.55 | 0.0 | 17 | <1 | 1 | 13 h |
| October | 48°F | 36°F | 42.2°F | 8.85 | 0.7 | 18 | <1 | 11 | 10 h 30 min |
| November | 41°F | 30°F | 35.7°F | 7.06 | 6.1 | 17 | <1 | 20 | 8 h |
| December | 37°F | 27°F | 31.9°F | 8.81 | 15.6 | 20 | <1 | 22 | 6 h 40 min |
| Year (annual) | 48°F | 37°F | 42.2°F | 78.32 | 70.3 | 204 | <1 | 133 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 2°C | −3°C | −0.4°C | 212 mm | 37 cm |
| February | 3°C | −3°C | 0.2°C | 160 mm | 37 cm |
| March | 4°C | −2°C | 0.7°C | 122 mm | 31 cm |
| April | 7°C | 1°C | 3.9°C | 156 mm | 16 cm |
| May | 11°C | 4°C | 7.7°C | 149 mm | 1 cm |
| June | 14°C | 8°C | 10.8°C | 131 mm | 0 cm |
| July | 17°C | 10°C | 13.4°C | 115 mm | 0 cm |
| August | 17°C | 10°C | 13.6°C | 124 mm | 0 cm |
| September | 14°C | 7°C | 10.3°C | 192 mm | 0 cm |
| October | 9°C | 2°C | 5.7°C | 225 mm | 2 cm |
| November | 5°C | −1°C | 2.1°C | 179 mm | 15 cm |
| December | 3°C | −3°C | −0.1°C | 224 mm | 40 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00025501; 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 Kodiak?
No month's normal high reaches 65°F in Kodiak: the warmest is August at 63°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 USW00025501.
When is the last frost in Kodiak?
In Kodiak, the last spring frost (32°F) comes after May 5 in half of years and after May 21 in one year in ten; the first autumn frost comes before October 3 in half of years and before September 22 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 51 year in 10 after May 21; 9 in 10 after April 19
- First autumn frost, half of years before
- October 31 year in 10 before September 22; 9 in 10 before October 17
NOAA puts the median frost-free season at 151 days, and the season without a hard freeze (28°F) at 185 days.
A hard freeze (28°F) comes after April 18 in half of springs and before October 17 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Kodiak in zone 7b in ZIP code 99644, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Kodiak's NOAA station is in zone 7a: the coldest night of a typical year reaches 3°F (30 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 USW00025501; 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 Kodiak?
In a normal year in Kodiak, a 90°F day is rare, 133 nights fall to 32°F or colder and 204 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
- 133a normal year
- Days that stay below freezing
- 29high of 32°F or less
- Days with 0.01 inch of precipitation
- 204a normal year
- Days with 1 inch of snow or more
- 19a normal year
The highest temperature in Kodiak's official record (kept by the National Weather Service since 1913) is 86°F, on June 28, 1953; the lowest is −16°F, on January 28, 1989.
The wettest calendar year on that record is 1998, with 106.25 in; the snowiest season is 1955–56, with 161.3 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00025501; records: ACIS (NOAA Regional Climate Centers), NWS threaded record ADQthr. Records use complete months only; a month missing more than three days is left out.
How humid and windy is Kodiak, and how clear are its skies?
The summer (June-August) dew point averages 48°F. The muggiest month is July, with an average dew point of 50°F; the driest air comes in December (25°F). December is the windiest month (12.5 mph on average), and February has the most clear or nearly clear hours (33%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 25°F | 79% | 75% | 11.5 mph | 26% | 49% |
| February | 25°F | 73% | 67% | 11.4 mph | 33% | 39% |
| March | 27°F | 71% | 64% | 11.6 mph | 26% | 44% |
| April | 34°F | 74% | 67% | 10.6 mph | 23% | 46% |
| May | 41°F | 77% | 71% | 9.9 mph | 22% | 51% |
| June | 47°F | 80% | 74% | 7.6 mph | 19% | 49% |
| July | 50°F | 81% | 74% | 7.5 mph | 20% | 48% |
| August | 47°F | 77% | 68% | 8.7 mph | 25% | 37% |
| September | 40°F | 76% | 67% | 10.0 mph | 27% | 40% |
| October | 31°F | 74% | 66% | 11.0 mph | 32% | 36% |
| November | 26°F | 76% | 72% | 11.7 mph | 32% | 40% |
| December | 25°F | 76% | 74% | 12.5 mph | 30% | 46% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00025501. Monthly averages of all hours; afternoon humidity at 3 p.m. local standard time; sky as the share of hours NOAA's observations rate clear or few clouds (a dash where NOAA publishes no sky value).
How sunny is Kodiak?
Over a year 58% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Kodiak, 2.5 kWh per square metre a day. August is the sunniest month (61%) and January the cloudiest (52%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 52% | 0.5 |
| February | 53% | 1.1 |
| March | 58% | 2.3 |
| April | 58% | 3.4 |
| May | 57% | 4.3 |
| June | 58% | 4.8 |
| July | 60% | 4.6 |
| August | 61% | 3.8 |
| September | 59% | 2.5 |
| October | 58% | 1.4 |
| November | 57% | 0.6 |
| December | 53% | 0.3 |
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 Kodiak need?
A normal year in Kodiak brings 8,316 heating degree days, 55% more than the median U.S. place (5,373), and 7 cooling degree days, 99% fewer than the median (908). Ten months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 551 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,049 | 0 |
| February | 914 | 0 |
| March | 986 | 0 |
| April | 776 | 0 |
| May | 595 | 0 |
| June | 410 | 1 |
| July | 277 | 3 |
| August | 265 | 3 |
| September | 431 | 0 |
| October | 708 | 0 |
| November | 879 | 0 |
| December | 1,026 | 0 |
| Year (annual) | 8,316 | 7 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00025501. 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 Kodiak been warmer than normal lately?
2025 averaged 42.8°F, 0.6°F above the 1991-2020 normal of 42.2°F. 2 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 41.3°F | −1.0°F | 73.24 | – |
| 2022 | 43.7°F | +1.5°F | 82.05 | – |
| 2023 | 41.0°F | −1.2°F | 65.51 | – |
| 2024 | 41.3°F | −0.9°F | 85.00 | – |
| 2025 | 42.8°F | +0.6°F | 74.03 | – |
Over 109 complete years from 1869 to 2025, the station's annual mean temperature rose at a fitted 2.8°F per century (+0.16°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00025501; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Kodiak's climate compare?
Kodiak is warmer than 69 of the other 84 places with their own NOAA record in Alaska, and wetter than 58. Across the 7,247 U.S. stations with normals, its annual mean of 42.2°F is warmer than 10%.
In the Köppen classification computed from these normals, Kodiak is Dfb: continental, no dry season, warm 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 Kodiak share this climate record?
4 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.
- Kodiak Station, AK1,941 people · 4 mi W
- Womens Bay, AK994 people · 9 mi SW
- Old Harbor, AK207 people · 48 mi SW
- Chiniak, AK0 people · 14 mi SE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Kodiak's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Kodiak. This page uses Kodiak Airport; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Kodiak Wastewater Treatment Plant USC00504991 | 6 mi NE | 54 ft | 41.9°F | 27°F | 60°F | 75.6 | 43 | April 29 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Kodiak's climate
What is the coldest month in Kodiak?
January, with a normal high of 36°F and a normal low of 26°F. The warmest is August (63°F by day, 50°F at night).
Does it snow in Kodiak?
Yes: 70 inches in a normal year, falling on 46 days with 0.1 inch or more, the most in December (15.6 inches).
What is the rainiest month in Kodiak?
October, with 8.85 in of precipitation in a normal year; the driest is July with 4.51 in.
What plant hardiness zone is Kodiak in?
The USDA's 2023 map puts Kodiak in zone 7b in ZIP code 99644, the nearest ZIP area. By the same method at Kodiak's NOAA station, the coldest night of a typical year reaches 3°F (30 years, 1991-2020): zone 7a.
How late can frost come in Kodiak?
In half of years the last 32°F night comes after May 5; in one year in ten it comes after May 21. Waiting until May 21 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Kodiak in OctoberThis month day by day, its records and recent years
- Alaska climateThe statewide normals and every place in the state
- Monashka Creek Dam, AK6 miles from this station, 38.1°F a year
- Ouzinkie, AK12 miles from this station, 40.5°F a year
- Kitoi Bay, AK30 miles from this station, 41.0°F a year
- Seldovia, AK121 miles from this station, 39.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made