Climateby Month

Seward, AK climate by month

NOAA 1991-2020 normals · 89 ft elevation

Summers in Seward are cool; winters are cold and snowy. Highs peak at 62°F in July and fall to 31°F in January. Wet days are spread through the year, from about 11 to 17 a month. Normal snowfall is about 90 in a year. The most comfortable time to visit is June, July and August.

Warmest month
62°F
July normal high
Coldest month
21°F
January normal low
Wet days a year
170
69.7 in of precipitation
Snow a year
90.1 in
normal snowfall

How warm is Seward?

Normal highs range from 31°F in January to 62°F in July.

20°30°40°50°60°70° January: normal high 31°F (-1°C), low 21°F (-6°C) 31° 21° February: normal high 34°F (1°C), low 24°F (-4°C) March: normal high 37°F (3°C), low 25°F (-4°C) April: normal high 45°F (7°C), low 32°F (0°C) May: normal high 53°F (12°C), low 39°F (4°C) June: normal high 59°F (15°C), low 46°F (8°C) July: normal high 62°F (17°C), low 50°F (10°C) 62° 50° August: normal high 62°F (17°C), low 50°F (10°C) September: normal high 56°F (13°C), low 43°F (6°C) October: normal high 46°F (8°C), low 35°F (2°C) November: normal high 36°F (2°C), low 27°F (-3°C) December: normal high 33°F (1°C), low 23°F (-5°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Seward?

September has the most wet days (about 17); the year brings about 70 in of precipitation.

January: 14 wet days February: 14 wet days March: 12 wet days April: 14 wet days May: 14 wet days June: 11 wet days 11 July: 13 wet days August: 15 wet days September: 17 wet days 17 October: 17 wet days November: 14 wet days December: 16 wet days JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How much does it snow?

Normal snowfall is 90.1 in a year, most of it in December.

January: 17.2 in of snow February: 15.7 in of snow March: 12.3 in of snow April: 3.9 in of snow May: 0.3 in of snow June: 0.0 in of snow 0.0 July: 0.0 in of snow August: 0.0 in of snow September: 0.0 in of snow October: 1.7 in of snow November: 11.8 in of snow December: 27.2 in of snow 27.2 JFMAMJJASOND

How humid is Seward?

Humidity data is not available for this location.

How much daylight?

Daylight ranges from about 6.0 hours in December to 18.8 hours in June.

January: 6.8 hours of daylight February: 9.2 hours of daylight March: 11.8 hours of daylight April: 14.6 hours of daylight May: 17.2 hours of daylight June: 18.8 hours of daylight 18.8 July: 18.0 hours of daylight August: 15.6 hours of daylight September: 12.8 hours of daylight October: 10.1 hours of daylight November: 7.5 hours of daylight December: 6.0 hours of daylight 6.0 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Seward, 1991-2020
MonthHighLowPrecip.Wet daysSnowDaylight
January 31°F21°F 6.5 in14 17.2 in 6.8 h
February 34°F24°F 6.3 in14 15.7 in 9.2 h
March 37°F25°F 3.9 in12 12.3 in 11.8 h
April 45°F32°F 4.3 in14 3.9 in 14.6 h
May 53°F39°F 3.5 in14 0.3 in 17.2 h
June 59°F46°F 2.3 in11 0.0 in 18.8 h
July 62°F50°F 3.1 in13 0.0 in 18.0 h
August 62°F50°F 5.4 in15 0.0 in 15.6 h
September 56°F43°F 9.9 in17 0.0 in 12.8 h
October 46°F35°F 8.7 in17 1.7 in 10.1 h
November 36°F27°F 7.6 in14 11.8 in 7.5 h
December 33°F23°F 8.2 in16 27.2 in 6.0 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Seward

By our comfort score, the best months are June, July and August.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 2001026
Feb 2101023
Mar 330821
Apr 48096
May 57380
Jun 62560
Jul 63770
Aug 649100
Sep 462130
Oct 350125
Nov 2301021
Dec 2001125

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. Comfortable days here are judged by temperature only (no humidity station nearby). How the score works.

Frost dates in Seward

The last spring frost typically comes around May 2, and the first fall frost around Oct 7, leaving 158 frost-free days in a typical year.

Frost and freeze dates for Seward
Typical date1 year in 10
Last spring frost (32°F)May 2after May 17
First fall frost (32°F)Oct 7before Sep 28
Last hard freeze (28°F)Apr 15after Apr 29
First hard freeze (28°F)Oct 21before Oct 5
Frost-free season158 daysunder 140 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Seward Airport (USW00026438), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Alaska.

Hottest and coldest readings, 1991-2020

The highest reading was 88°F (June 17, 2013); the lowest was -15°F (February 4, 1999).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Seward

Similar climates elsewhere

Where the numbers come from

  • Temperature, rain and frost dates: Seward Airport (USW00026438), 1.9 mi NNE of the city center, 22 ft (67 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Snowfall and snow depth: Seward 19N (USC00508377), 18 mi N of the city center, 518 ft (429 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Not available for this location: humidity and wind by hour, cloud cover and daily humidity and wind (no station close enough or similar enough in elevation).

Distances from the city center (USGS). Methodology · Report an error