Metar & Taf

Visual decoder

Weather in Alaska

Calculated from weather data of Juneau International Airport (PAJN) between 2020 and 2024.

Maximum temperatures (°F)

Month Average 2024 2023 2022 2021 2020
January 34.0 32.0 38.0 33.0 37.0 30.0
February 35.0 35.0 34.0 39.0 31.0 37.0
March 40.0 43.0 37.0 41.0 38.0 39.0
April 49.0 51.0 48.0 47.0 49.0 48.0
May 58.0 55.0 58.0 60.0 54.0 62.0
June 64.0 66.0 63.0 69.0 65.0 60.0
July 66.0 62.0 70.0 65.0 67.0 65.0
August 65.0 67.0 67.0 64.0 64.0 59.0
September 58.0 55.0 56.0 58.0 56.0 58.0
October 48.0 46.0 49.0 51.0 46.0 46.0
November 39.0 42.0 37.0 40.0 36.0
December 36.0 40.0 29.0 27.0 40.0
Average 50.0 51.0 50.0 50.0 48.0 48.0

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°F)

Month Average 2024 2023 2022 2021 2020
January 27.0 25 32 26 31 23
February 25.0 26 27 31 21 31
March 28.0 29 25 33 29 26
April 34.0 34 35 33 33 34
May 42.0 41 43 39 43 43
June 49.0 50 48 49 50 49
July 52.0 52 52 53 53 52
August 52.0 49 52 53 52 52
September 46.0 47 47 48 47 45
October 39.0 38 40 42 38 38
November 31.0 36 29 31 28
December 29.0 33 21 17 34
Average 38.0 39.0 39.0 39.0 37.0 38.0

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days 2024 2023 2022 2021 2020
86 °F or warmer 0 0 0 0 0
77 °F or warmer 8 8 13 4 2
68 °F or warmer 26 42 40 31 17
32 °F or colder 71 79 81 110 104

Precipitation (%)

Month Average 2024 2023 2022 2021 2020
January 40.0 48 49 46 47 38
February 37.9 37 46 56 39 62
March 32.3 25 25 47 49 32
April 30.1 22 40 20 42 39
May 29.9 37 28 21 47 13
June 27.0 20 27 21 34 42
July 28.2 44 12 42 23 32
August 30.4 21 23 38 36 49
September 35.4 41 51 37 54 26
October 38.2 39 42 48 41 29
November 40.6 51 41 48 36
December 41.9 58 40 29 44
Average 33.2 32.8 35.4 36.6 40.2 35.8

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (miles per hour)

Month Average 2024 2023 2022 2021 2020
January 8.2 7 8 10 10 9
February 7.8 6 7 9 10 10
March 9.3 10 10 10 9 9
April 9.1 8 9 10 8 9
May 8.9 10 9 9 9 8
June 7.5 8 8 8 8 7
July 7.1 7 6 8 7 8
August 7.7 8 8 8 8 8
September 8.3 9 9 9 9 8
October 8.9 8 9 9 10 9
November 7.8 9 9 7 8
December 9.0 11 9 5 11
Average 8.3 8.2 8.5 8.9 8.3 8.5

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month 2024 2023 2022 2021 2020
January E E E E E
February E E E E E
March SE E SE E E
April SE SE SE SE SE
May SE SE SE SE S
June S SE S SE SE
July E SW E SE E
August SE SE E E E
September E E E E E
October SE E E SE E
November E E E E
December E E E E

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Alaska weather Q&A

What is the warmest month in Alaska?

The warmest month is July with an average temperature of 66 °F over the past years.

What is the coldest month in Alaska?

The coldest month is January with an average daytime temperature of 34 °F in the past few years.

Which month is the wettest in Alaska?

Chance of precipitation is the highest in December with a probability of around 41.9 %.

Which month is the driest in Alaska?

The least rainfall and snow can be expected in June. The probability is about 27.1 %.