Little Su At Hatcher Pass Bridge, Alaska climate: Climate normals at a NOAA weather station
Little Su At Hatcher Pass Bridge's normal year runs from 9°F January nights to 66°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 2.0°C, January lows of −13°C, July highs of 19°C.
- NOAA stationLittle Su At Hatcher Pass Bridge
- Station IDUSC00505527
- Location61.71°N 149.23°W
- Elevation902 ft (275 m)
On October 23, the normal high in Little Su At Hatcher Pass Bridge is 38°F and the normal low 24°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Little Su At Hatcher Pass Bridge.
- Jan 23° 9°
- Feb 29° 12°
- Mar 34° 14°
- Apr 46° 26°
- May 57° 36°
- Jun 63° 43°
- Jul 66° 48°
- Aug 63° 45°
- Sep 55° 38°
- Oct 42° 27°
- Nov 29° 16°
- Dec 24° 10°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Little Su At Hatcher Pass Bridge each month?
July is the warmest month, with normal highs of 66°F; January the coldest, with normal lows of 9°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 23°F | 9°F | 15.8°F | – | <1 | 31 | 6 h 10 min |
| February | 29°F | 12°F | 20.5°F | – | <1 | 28 | 8 h 50 min |
| March | 34°F | 14°F | 24.0°F | – | <1 | 31 | 11 h 40 min |
| April | 46°F | 26°F | 35.9°F | – | <1 | 26 | 14 h 40 min |
| May | 57°F | 36°F | 46.1°F | – | <1 | 8 | 17 h 30 min |
| June | 63°F | 43°F | 53.1°F | – | <1 | <1 | 19 h 30 min |
| July | 66°F | 48°F | 57.2°F | – | <1 | <1 | 18 h 40 min |
| August | 63°F | 45°F | 54.3°F | – | <1 | <1 | 16 h |
| September | 55°F | 38°F | 46.6°F | – | <1 | 5 | 13 h |
| October | 42°F | 27°F | 34.7°F | – | <1 | 20 | 10 h 10 min |
| November | 29°F | 16°F | 22.4°F | – | <1 | 29 | 7 h 20 min |
| December | 24°F | 10°F | 17.0°F | – | <1 | 31 | 5 h 20 min |
| Year (annual) | 44°F | 27°F | 35.6°F | – | <1 | 208 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | −5°C | −13°C | −9.0°C |
| February | −2°C | −11°C | −6.4°C |
| March | 1°C | −10°C | −4.4°C |
| April | 8°C | −3°C | 2.2°C |
| May | 14°C | 2°C | 7.8°C |
| June | 17°C | 6°C | 11.7°C |
| July | 19°C | 9°C | 14.0°C |
| August | 17°C | 7°C | 12.4°C |
| September | 13°C | 3°C | 8.1°C |
| October | 6°C | −3°C | 1.5°C |
| November | −2°C | −9°C | −5.3°C |
| December | −4°C | −12°C | −8.3°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, North Lakes (7 miles away), gets 62 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00505527; 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.
Which months are mildest at Little Su At Hatcher Pass Bridge?
Normal highs sit between 65°F and 85°F in July.
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 USC00505527.
When is the last frost at Little Su At Hatcher Pass Bridge?
In Little Su At Hatcher Pass Bridge, the last spring frost (32°F) comes after May 18 in half of years and after May 30 in one year in ten; the first autumn frost comes before September 18 in half of years and before September 2 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 181 year in 10 after May 30; 9 in 10 after May 6
- First autumn frost, half of years before
- September 181 year in 10 before September 2; 9 in 10 before October 1
NOAA puts the median frost-free season at 122 days, and the season without a hard freeze (28°F) at 150 days.
A hard freeze (28°F) comes after May 3 in half of springs and before September 30 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Little Su At Hatcher Pass Bridge in zone 5a in ZIP code 99654, the nearest ZIP area.
Frost dates for every NOAA station in Alaska · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00505527; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 at Little Su At Hatcher Pass Bridge?
In a normal year in Little Su At Hatcher Pass Bridge, a 90°F day is rare and 208 nights fall to 32°F or colder.
- 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
- 208a normal year
- Days that stay below freezing
- 94high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00505527.
How sunny is it at Little Su At Hatcher Pass Bridge?
Over a year 64% of the sunlight that would reach the ground under clear skies gets through the clouds at Little Su At Hatcher Pass Bridge, 2.5 kWh per square metre a day. April is the sunniest month (70%) and October the cloudiest (55%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 57% | 0.3 |
| February | 59% | 0.9 |
| March | 68% | 2.4 |
| April | 70% | 4.0 |
| May | 66% | 5.0 |
| June | 65% | 5.3 |
| July | 63% | 4.8 |
| August | 63% | 3.8 |
| September | 61% | 2.4 |
| October | 55% | 1.1 |
| November | 55% | 0.4 |
| December | 56% | 0.1 |
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 many heating and cooling degree days does Little Su At Hatcher Pass Bridge record?
A normal year at Little Su At Hatcher Pass Bridge brings 10,698 heating degree days, 99% more than the median U.S. place (5,373), and 2 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 525 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,527 | 0 |
| February | 1,246 | 0 |
| March | 1,271 | 0 |
| April | 875 | 0 |
| May | 586 | 0 |
| June | 357 | 0 |
| July | 243 | 1 |
| August | 332 | 0 |
| September | 554 | 0 |
| October | 941 | 0 |
| November | 1,278 | 0 |
| December | 1,490 | 0 |
| Year (annual) | 10,698 | 2 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00505527. 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.
How does Little Su At Hatcher Pass Bridge's climate compare?
Little Su At Hatcher Pass Bridge is warmer than 43 of the 85 places with their own NOAA record in Alaska. Across the 7,247 U.S. stations with normals, its annual mean of 35.6°F is warmer than 2%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Little Su At Hatcher Pass Bridge share this climate record?
2 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.
- Fishhook, AK5,461 people · 2 mi NW
- Buffalo Soapstone, AK799 people · 4 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.
Questions about Little Su At Hatcher Pass Bridge's climate
What is the coldest month at Little Su At Hatcher Pass Bridge?
January, with a normal high of 23°F and a normal low of 9°F. The warmest is July (66°F by day, 48°F at night).
Does it snow at Little Su At Hatcher Pass Bridge?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, North Lakes (7 miles away), records 62 inches of snow in a normal year.
What plant hardiness zone is Little Su At Hatcher Pass Bridge in?
The USDA's 2023 map puts Little Su At Hatcher Pass Bridge in zone 5a in ZIP code 99654, the nearest ZIP area.
How late can frost come at Little Su At Hatcher Pass Bridge?
In half of years the last 32°F night comes after May 18; in one year in ten it comes after May 30. Waiting until May 30 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Alaska climateThe statewide normals and every place in the state
- North Lakes, AK7 miles from this station, 37.0°F a year
- Lazy Mountain, AK9 miles from this station, 35.4°F a year
- Palmer, AK9 miles from this station, 37.1°F a year
- Matanuska Experiment Farm, AK10 miles from this station, 36.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made