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Climate in Anderson · NOAA 1991–2020 normals

Anderson’s winters are colder than most of the U.S.; July afternoons average 73°

A typical July afternoon reaches 73°, a January night drops to −17°.

Colder January nights than all but 4 U.S. towns#5 coldest of 42 in AK
Cooler July afternoons than all but 139 U.S. towns
All AK rankings →
July high
73°
Cooler than all but 139 U.S. towns
42nd coolest of 42 in Alaska
January low
−17°
Colder than all but 4 U.S. towns
5th coldest of 42 in Alaska
Rain + melted snow
14"
Drier than 94% of U.S. towns
9th driest of 42 in Alaska
Frost-free days
100
May 24 to Sep 4
Shorter than all but 33 U.S. towns
90° days
<1
Fewer than all but 100 U.S. towns
36th fewest of 41 in Alaska

A year in Anderson at a glance

Each month’s typical high and low, and what it brings.

Jan1°-17°
Feb13°-10°
Mar25°-2°
Apr45°18°
May62°35° Last frost ~May 24
Jun72°46°
Jul73°50°
Aug66°45° Wettest
Sep54°35° First frost ~Sep 4
Oct33°17°
Nov now11°-6°
Dec6°-14°

What stands out about Anderson’s climate

Compared with towns across the U.S., with Anderson’s place in Alaska beside it.

Colder January nights than all but 4 U.S. townsJanuary nights bottom out around −17°, with about 111 nights a year at or below 0°. 5th coldest of 42 in Alaska.A shorter frost-free season than all but 33 U.S. townsAbout 100 frost-free days, from May 24 to Sep 4 in half of years. 5th shortest of 40 in Alaska.Cooler July afternoons than all but 139 U.S. townsJuly afternoons average 73°; 90° days are rare. 42nd coolest of 42 in Alaska.Growing zone 2aThe 2023 USDA plant hardiness zone at Anderson’s center: the coldest night of a typical winter reaches about −49°.
A normal year

What a year in Anderson feels like

Typical highs and lows by season and by month, from NOAA’s 30-year normals.

Winter
6° / -14°
Snow is rare
Spring
44° / 17°
Last frost around May 24
Summer
70° / 47°
90° days are rare
Fall
32° / 15°
First frost around Sep 4
Best months to be outsideJunJulAugHighs of 62–84° and lows of 40° or more
Frost, heat & the growing season

About 100 frost-free days a year

In half of years the last 32° night comes by May 24 and the first by September 4. Frost and day counts come from NOAA’s station at Clear Sky, AK, 4 miles from the town’s center, at about the same height.

234
nights at or below 32° in a normal year
5th most of 41 in Alaska
More freezing nights than all but 16 U.S. towns
111
nights at or below 0°
4th most of 41 in Alaska
More nights at or below 0° than all but 3 U.S. towns
<1
days that reach 90°
36th fewest of 41 in Alaska
Fewer 90° days than all but 100 U.S. towns
0
days that reach 100°
None in a normal year
2aUSDA zone
Plant hardiness zone 2a

The 2023 USDA map puts Anderson’s center in zone 2a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −49°. Plant labels use the zone; frost dates tell you when to plant.

Freezing nights by month

Average nights at or below 32°

31
JFMAMJJASOND
Rain & snow

About 14 inches of rain a year

August is the wettest month and March the driest.

14"
Rain + melted snow a year
9th driest of 42 in Alaska
Drier than 94% of U.S. towns

Rain + melted snow by month

Inches of water

2.9"
JFMAMJJASOND
Heating & cooling

Heating and cooling a home in Anderson

Nearly all of the work is heating: a normal year has almost no cooling days. Months averaging under 55° run from September through May.

13,762 heating degree daysMore heating than all but 5 U.S. towns
37 cooling degree daysLess cooling than all but 82 U.S. towns

Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Clear Sky, AK.

Living here

Living with Anderson’s climate

What the numbers mean for a garden, a free afternoon and a bad-weather day.

The garden window

100 frost-free days in zone 2a. The last frost comes by May 24 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 4.

Get outside

Months with highs of 62–84° and lows of 40° or more: June, July and August. 14 miles of trails are waiting.

Parks & trails →
Storms and extremes

Of the yearly building losses FEMA expects in Anderson from natural hazards, avalanches are the largest share (55%); heat waves, cold waves, winter storms and ice storms together are 18%. Normals are averages; the hazards page covers the extremes.

Natural hazards →
Next door & far away

Anderson and similar climates

TownRatings has no climate map of the towns around Anderson yet.

Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.

Compared with other towns

How Anderson compares

Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Anderson’s place among Alaska’s.

Summer heat73° July high
Cooler July afternoons than all but 139 U.S. towns42nd coolest of 42 in Alaska
Winter cold−17° January low
Colder January nights than all but 4 U.S. towns5th coldest of 42 in Alaska
Precipitation14" a year
Drier than 94% of U.S. towns9th driest of 42 in Alaska
Hot days<1 days at 90°+
Fewer 90° days than all but 100 U.S. towns36th fewest of 41 in Alaska
Freezing nights234 a year
More freezing nights than all but 16 U.S. towns5th most of 41 in Alaska
Growing season100 frost-free days
A shorter frost-free season than all but 33 U.S. towns5th shortest of 40 in Alaska
#42Coolest summers  of 42 in AKAll AK rankings →
Month by month

Anderson weather by month

Highs, lows and precipitation from the nearest NOAA station. 1991–2020 normals.

MonthHighLowRain + melt
January1°−17°0.6"
February13°−10°0.5"
March25°−2°0.4"
April45°18°0.4"
May62°35°0.7"
June72°46°1.9"
July73°50°2.6"
August66°45°2.9"
September54°35°1.5"
October33°17°1.0"
November11°−6°0.9"
December6°−14°0.6"
Year38°16°14.1"
Sources

Where Anderson’s numbers come from

Normals are 30-year averages, not a forecast. How TownRatings reads climate data →

  • Temperatures and precipitation: NOAA’s 1991–2020 normals at the nearest station (NOAA’s grid doesn’t cover Alaska).
  • Frost, freezing nights, 90° and 100° days, heating and cooling: Clear Sky, AK, 4 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
  • Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
  • Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).

Common questions about Anderson’s climate

What is the weather like in Anderson?

A typical July afternoon reaches 73°, a January night drops to −17°. Colder January nights than all but 4 U.S. towns; cooler July afternoons than all but 139 U.S. towns.

How cold does it get in Anderson in winter?

January nights average −17°. About 234 nights a year reach 32° or below and 111 reach 0° or below.

How hot does it get in Anderson?

July, with a typical high of 73°. 90° days are rare: none in a normal year at Clear Sky, AK.

When is the first and last frost in Anderson?

In half of years the last spring frost (32°) comes by May 24 and the first fall frost by September 4, about 100 frost-free days, at Clear Sky, AK.

What growing zone is Anderson in?

Zone 2a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −49°.

What is the best time of year to visit Anderson?

By one simple rule (highs of 62–84° and lows of 40° or more), June, July and August. The rule is ours, not NOAA’s; the month table has the numbers to judge by.

Neighbors talk weather

Gardens, snow, and the best days of the year in Anderson.

Town Square →
Ask your neighbors

Source: NOAA NCEI U.S. Climate Normals, 1991–2020; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.