Homer, Alaska climate: Normal weather by month, frost dates and records
Homer's normal year runs from 19°F January nights to 63°F July afternoons, with 23.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 4.5°C, January lows of −7°C, July highs of 17°C, 607 mm of precipitation a year.
- NOAA stationHomer Airport
- Station IDUSW00025507
- Location59.64°N 151.49°W
- Elevation64 ft (20 m)
- Population6,136
On October 23, the normal high in Homer is 44°F and the normal low 31°F, and the chance of measurable rain or snow is 48%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Homer.
- Jan 32° 19°
- Feb 35° 22°
- Mar 37° 23°
- Apr 46° 31°
- May 54° 38°
- Jun 59° 45°
- Jul 63° 49°
- Aug 63° 48°
- Sep 57° 42°
- Oct 47° 33°
- Nov 38° 25°
- Dec 34° 21°
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 Homer each month?
July is the warmest month, with normal highs of 63°F; January the coldest, with normal lows of 19°F. The most precipitation falls in September (3.28 in), the least in May (0.78 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. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 32°F | 19°F | 25.4°F | 2.15 | 14 | <1 | 27 | 6 h 50 min |
| February | 35°F | 22°F | 28.3°F | 1.82 | 12 | <1 | 25 | 9 h 10 min |
| March | 37°F | 23°F | 30.1°F | 1.32 | 11 | <1 | 27 | 11 h 40 min |
| April | 46°F | 31°F | 38.7°F | 1.15 | 10 | <1 | 18 | 14 h 30 min |
| May | 54°F | 38°F | 46.0°F | 0.78 | 10 | <1 | 5 | 17 h |
| June | 59°F | 45°F | 52.0°F | 0.87 | 10 | <1 | <1 | 18 h 40 min |
| July | 63°F | 49°F | 56.1°F | 1.45 | 12 | <1 | <1 | 18 h |
| August | 63°F | 48°F | 55.3°F | 2.31 | 14 | <1 | <1 | 15 h 40 min |
| September | 57°F | 42°F | 49.5°F | 3.28 | 17 | <1 | 3 | 13 h |
| October | 47°F | 33°F | 40.2°F | 2.61 | 15 | <1 | 15 | 10 h 20 min |
| November | 38°F | 25°F | 31.2°F | 2.87 | 15 | <1 | 23 | 7 h 40 min |
| December | 34°F | 21°F | 27.7°F | 3.27 | 17 | <1 | 27 | 6 h |
| Year (annual) | 47°F | 33°F | 40.1°F | 23.88 | 156 | <1 | 169 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 0°C | −7°C | −3.7°C | 55 mm |
| February | 2°C | −6°C | −2.1°C | 46 mm |
| March | 3°C | −5°C | −1.1°C | 34 mm |
| April | 8°C | 0°C | 3.7°C | 29 mm |
| May | 12°C | 3°C | 7.8°C | 20 mm |
| June | 15°C | 7°C | 11.1°C | 22 mm |
| July | 17°C | 10°C | 13.4°C | 37 mm |
| August | 17°C | 9°C | 12.9°C | 59 mm |
| September | 14°C | 6°C | 9.7°C | 83 mm |
| October | 8°C | 1°C | 4.6°C | 66 mm |
| November | 3°C | −4°C | −0.4°C | 73 mm |
| December | 1°C | −6°C | −2.4°C | 83 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Homer's own co-op station Homer (8 mi NW) does: 101 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00025507; 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 Homer?
No month's normal high reaches 65°F in Homer: the warmest is July 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 USW00025507.
When is the last frost in Homer?
In Homer, the last spring frost (32°F) comes after May 10 in half of years and after May 23 in one year in ten; the first autumn frost comes before September 29 in half of years and before September 14 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 23; 9 in 10 after April 27
- First autumn frost, half of years before
- September 291 year in 10 before September 14; 9 in 10 before October 13
NOAA puts the median frost-free season at 141 days, and the season without a hard freeze (28°F) at 170 days.
A hard freeze (28°F) comes after April 23 in half of springs and before October 11 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Homer in zone 6a in ZIP code 99556, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Homer's NOAA station is in zone 6b: the coldest night of a typical year reaches −4°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 USW00025507; 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 Homer?
In a normal year in Homer, a 90°F day is rare, 169 nights fall to 32°F or colder and 156 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
- 169a normal year
- Days that stay below freezing
- 58high of 32°F or less
- Days with 0.01 inch of precipitation
- 156a normal year
The highest temperature in Homer's official record (kept by the National Weather Service since 1932) is 81°F, on July 10, 1993; the lowest is −24°F, on January 29, 1989.
The wettest calendar year on that record is 1981, with 38.10 in; the snowiest season is 1974–75, with 119.2 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00025507; records: ACIS (NOAA Regional Climate Centers), NWS threaded record HOMthr. Records use complete months only; a month missing more than three days is left out.
How humid and windy is Homer, 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 January (19°F). March is the windiest month (7.4 mph on average), and February has the most clear or nearly clear hours (44%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 19°F | 77% | 73% | 6.7 mph | 39% | 48% |
| February | 20°F | 71% | 64% | 6.8 mph | 44% | 41% |
| March | 25°F | 69% | 62% | 7.4 mph | 36% | 48% |
| April | 32°F | 68% | 58% | 7.0 mph | 40% | 36% |
| May | 40°F | 69% | 60% | 6.8 mph | 44% | 31% |
| June | 47°F | 77% | 69% | 6.6 mph | 38% | 34% |
| July | 50°F | 80% | 72% | 6.0 mph | 34% | 38% |
| August | 46°F | 80% | 70% | 6.0 mph | 36% | 42% |
| September | 38°F | 76% | 67% | 6.3 mph | 33% | 44% |
| October | 28°F | 75% | 68% | 6.4 mph | 40% | 45% |
| November | 22°F | 78% | 74% | 6.7 mph | – | – |
| December | 21°F | 79% | 75% | 6.9 mph | 36% | 48% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00025507. 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 Homer?
Over a year 62% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Homer, 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 Homer need?
A normal year in Homer brings 9,084 heating degree days, 69% more than the median U.S. place (5,373), and 0 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 501 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,228 | 0 |
| February | 1,028 | 0 |
| March | 1,082 | 0 |
| April | 789 | 0 |
| May | 589 | 0 |
| June | 390 | 0 |
| July | 274 | 0 |
| August | 301 | 0 |
| September | 465 | 0 |
| October | 769 | 0 |
| November | 1,014 | 0 |
| December | 1,156 | 0 |
| Year (annual) | 9,084 | 0 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00025507. 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 Homer been warmer than normal lately?
2024 averaged 40.6°F, 0.5°F above the 1991-2020 normal of 40.1°F. 2 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 38.1°F | −2.0°F | 22.40 |
| 2022 | 40.7°F | +0.6°F | 25.39 |
| 2023 | 39.8°F | −0.3°F | 25.99 |
| 2024 | 40.6°F | +0.5°F | 27.71 |
Over 84 complete years from 1933 to 2025, the station's annual mean temperature rose at a fitted 3.7°F per century (+0.20°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00025507; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Homer's climate compare?
Homer is warmer than 61 of the other 84 places with their own NOAA record in Alaska, and wetter than 43. Across the 7,247 U.S. stations with normals, its annual mean of 40.1°F is warmer than 6%.
In the Köppen classification computed from these normals, Homer 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 Homer share this climate record?
8 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.
- Fritz Creek, AK2,432 people · 10 mi NE
- Anchor Point, AK2,291 people · 10 mi NW
- Diamond Ridge, AK1,338 people · 5 mi NW
- Happy Valley, AK773 people · 18 mi N
- Fox River, AK605 people · 24 mi NE
- Kachemak, AK591 people · 3 mi NE
- Halibut Cove, AK214 people · 11 mi SE
- Nikolaevsk, AK202 people · 13 mi N
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 Homer's other NOAA stations record?
2 more NOAA stations keep 1991-2020 normals in or near Homer. This page uses Homer Airport; the others differ by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Homer (8 mi NW) USC00503672 | 9 mi NW | 1,080 ft | 37.2°F | 18°F | 61°F | 29.7 | 101 | May 16 |
| Homer (9 mi E) USC00503682 | 8 mi NE | 512 ft | 38.2°F | 17°F | 64°F | 22.0 | 84 | May 27 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Homer's climate
What is the coldest month in Homer?
January, with a normal high of 32°F and a normal low of 19°F. The warmest is July (63°F by day, 49°F at night).
Does it snow in Homer?
Yes. NOAA publishes no 1991-2020 snowfall normal for Homer's NOAA station; Homer's own co-op station Homer (8 mi NW) records 101 inches of snow in a normal year.
What is the rainiest month in Homer?
September, with 3.28 in of precipitation in a normal year; the driest is May with 0.78 in.
What plant hardiness zone is Homer in?
The USDA's 2023 map puts Homer in zone 6a in ZIP code 99556, the nearest ZIP area. By the same method at Homer's NOAA station, the coldest night of a typical year reaches −4°F (30 years, 1991-2020): zone 6b.
How late can frost come in Homer?
In half of years the last 32°F night comes after May 10; in one year in ten it comes after May 23. Waiting until May 23 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Homer in OctoberThis month day by day, its records and recent years
- Alaska climateThe statewide normals and every place in the state
- Seldovia, AK16 miles from this station, 39.5°F a year
- Soldotna, AK55 miles from this station, 34.1°F a year
- Sterling, AK62 miles from this station, 35.7°F a year
- Kenai, AK65 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