Climate and monthly weather forecast
Wasilla, AK

The famed Chugach Mountain Ranges in Wasilla, Alaska
The famed Chugach Mountain Ranges in Wasilla, Alaska

The climate of Wasilla

Located in Alaska, Wasilla is home to a predominantly subarctic climate, extensively referred to as Dfc under the Köppen climate classification. This categorization encompasses the severe winters and cool summers that the residents experience, alongside a lack of dry season. When embarking on a comprehensive review of Wasilla's climate, it becomes evident that the region exhibits considerable fluctuations in environmental conditions across all twelve months.

The temperatures in Wasilla swing drastically between a chilling 8.6°F (-13°C) during the winter months to an average peak of 63.3°F (17.4°C) during the summer. The highest average temperature occurs in July, while the lowest gets recorded in January. The extent of yearly temperature fluctuation underlines the city's distinct seasonal division.

In terms of humidity, Wasilla experiences the highest relative humidity levels, averaging 86%, during the winter months and in March. June and May see the lowest humidity at a still fairly high 65% and 67%, respectively. Rainfall is most concentrated from May to September with August witnessing notably the highest precipitation of 0.94" (24mm). Remarkably, the town registers snowfall from January up to April and then again in October, November, and December, with December having the most at 2.64" (67mm).

Windowing in on the wind patterns, the annual wind speeds generally hold at around 4.2mph (6.8km/h) to 4.8mph (7.7km/h). However, gusts can reach up to 9.7mph (15.6km/h) particularly in December. Meanwhile, concerning sunshine, June enjoys the most extended daylight hours at 19.4 hours, with December at the other extreme having merely 5.5 hours. Nevertheless, the city does witness certain fluctuations in sunshine duration throughout different times of the year.

The best time to visit Wasilla

Even though the best time to visit Wasilla largely depends on personal preferences, the location's climate data suggests that the summer months from June to August present the most favourable conditions. Notably, these months, particularly July, have the most comfortable temperatures, reaching up to an average high of 63.3°F (17.4°C). Moreover, July also has one of the lowest snowfall periods and a UV index of 4, which makes outdoor activities more enjoyable and less hazardous.

The worst time to visit Wasilla

Regarding the more unfavourable times to visit Wasilla, it would have to be during the colder and darker season from November to February. Extreme low temperatures averaging between 8.6°F (-13°C) to 18.3°F (-7.6°C), combined with extended periods of snowfall averaging between 1.77" (45mm) to 2.64" (67mm), pose significant difficulties for outdoor activities. December holds the record for the least amount of daylight with only 5.5 hours, further limiting the scope for outdoor endeavors.

Spring weather in Wasilla

Spring in Wasilla occurs between April and May, bringing an upward shift in temperatures and a decrease in snowfall. Temperatures show a discernible climb, going from an average low of 24.3°F (-4.3°C) in April to an average high of 52.3°F (11.3°C) in May. However, temperatures can still drop to an average low of 37.4°F (3°C) during May. Rainfall also starts to increase during these months, offering some respite from the colder winter days. The daylight hours sufficiently extend, reaching 14.8 hours in April and, significantly, 17.7 hours in May.

Summer weather in Wasilla

Summer in Wasilla, extending from June to August, represents the warmest period of the year. With average high temperatures shooting up to between 59.7°F (15.4°C) and 63.3°F (17.4°C), the weather becomes relatively comfortable for outdoor exploration. This period also corresponds to the highest precipitation, peaking in August with 0.94" (24mm) of rainfall. However, the enhanced rainfall does not reduce the increased amount of sunshine, with the month of June relishing the peak daylight hours of 19.4.

Autumn weather in Wasilla

Autumn makes its entrance in Wasilla in September and concludes in November. It ushers in dropping temperatures starting from an average high of 52°F (11.1°C) in September, inevitably leading to a chillier 24.8°F (-4°C) in November. As temperatures start to dwindle, the region begins to witness snowfall again, beginning in October. Despite the declining temperatures and onset of snow, daylight remains relatively abundant during the initial autumn months before dropping to 7.2 hours in November.

Winter weather in Wasilla

Winter in Wasilla starts in December and lingers until March. It marks the season of severe cold, with temperatures ebbing to an average low of 8.6°F (-13°C) in January. Snowfall is high during these months, specifically peaking in December with 2.64" (67mm). Daylight remains limited, particularly with December having the least daylight hours at 5.5 hours. However, despite the cold and limited light, Wasilla's winter presents an impressive spectacle of a subarctic climate at its peak.

Weather in January

Jump-starting the year in Wasilla, Alaska, January presents a winter wonderland. Outdoor lovers can expect an average snowfall of 1.85" (47mm) throughout the month. As from mid-January, the increasing daylight hours from 6.5 hours bring a welcome change. Weather in January »

Weather in February

Moving into February, chilly temperatures persist; however, the increment of daylight hours fosters a sprightlier mood. Snowfall averages increase by approximately half an inch compared to January, settling at about 2.4" (61mm). Weather in February »

Weather in March

March weather in Wasilla, Alaska, is synonymous with the transition from frigid winter to the somewhat warmer spring season. This transition is highlighted by a slight increase in rainfall, averaging around 0.39" (10mm). The amount of daylight extends significantly, a signal of the approaching spring season. Weather in March »

Weather in April

April proffers more significant shifts in Wasilla's weather as spring steps up its game. On average, the amount of daylight extends significantly to approximately 14.8 hours per day. This shift gives the town a brighter ambiance, making outdoor activities even more enjoyable. Weather in April »

Weather in May

May represents the cusp of summer with minimal traces of the past winter apparent. The most apparent change lies in the disappearance of measurable snowfall, allowing the beauty of Alaska's nature to emerge. The end of May sees the sunrise as early as 4 a.m. Weather in May »

Weather in June

Alaska experiences its impatiently awaited summer in June. Average relative humidity decreases to around 67% compared to May, presenting a considerably drier climate. Extended daylight hours peak at this time of the year, reaching a high of over 19 hours per day. Weather in June »

Weather in July

July is the peak of Wasilla's short summer season. The temperature extremes point that out, with highs resting at 63.3°F (17.4°C) and lows averaging around 47.1°F (8.4°C). It's a delight for those who thrive during long sunny days; it’s summer in full swing. Weather in July »

Weather in August

Summer takes a bow in Wasilla with August weather, ushering in the early signs of autumn. Average daylight hours start to decrease, yet remain above 15 hours per day. The summer's heat starts to fade, with temperatures dropping gradually. Weather in August »

Weather in September

September enters the scene as an emblematic representation of autumn in Wasilla. Average daily sunshine hours keep decreasing, moving down to roughly 12.9 hours. Leaves begin their color transformation, decorating Wasilla with picturesque views. Weather in September »

Weather in October

October weather in Wasilla is marked by a crisp, fall feel with cooler temperatures. Fresh snowfall begins to appear, setting the stage for the imminent winter. There's a steep drop in daylight hours returning to less than 10 hours per day. Weather in October »

Weather in November

In Wasilla, November acts as a prelude to winter, introducing Alaskans to snowfall. The snowfall average jumps to 1.77" (45mm), a noticeable increase from October's slim half an inch. Shops begin to stock winter gear, and preparations are underway for the winter season. Weather in November »

Weather in December

December in Wasilla captures the essence of Alaskan winters, characterized by chilly temperatures and abundant snowfall. Snowfall sees its peak at 2.64" (67mm), perfectly creating a winter wonderland in time for the holiday season. Weather in December »

Frequently asked questions

What time of the year is the coldest?

The coldest time of the year is January, with temperatures averaging a high of 18.3°F (-7.6°C) and a low of 8.6°F (-13°C).

What is the driest month?

The month with the least rainfall is January, when the rain falls for 7.4 days and typically collects 0.31" (8mm) of precipitation.

How much does it rain?

Throughout the year, there are 124.6 rainfall days, and 7.36" (187mm) of precipitation is accumulated.

When does it snow in Wasilla?

January through May, October through December are months with snowfall.

How many days does it snow?

In Wasilla, during the entire year, snow falls for 50.5 days and aggregates up to 12.52" (318mm) of snow.

What is the most humid month?

The most humid month is March, with an average relative humidity of 87%.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from AKST to AKDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from AKDT to AKST.

What is the least humid month?

May is the least humid month, with an average relative humidity of 65%.

What month has the most sunshine?

With an average of 12h of sunshine, May has the most sunshine of the year.

When it does not snow?

June through September are months without snowfall.

When are the longest days?

With an average of 19h and 24min of daylight, June has the longest days of the year.

What are the months with the highest UV index?

The months with the highest UV index are June and July, with an average maximum UV index of 4.

What time of the year is the hottest?

July, on average, is the warmest month, registering a high temperature of 63.3°F (17.4°C) and a low of 47.1°F (8.4°C).

What is the wettest month?

The month with the most rainfall is August, when the rain falls for 13.5 days and typically aggregates up to 0.94" (24mm) of precipitation.

What is the snowiest month?

December is the month with the most snowfall. Snow falls for 8.6 days and accumulates 2.64" (67mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 5h and 30min of daylight.

What is the month with the least sunshine?

With an average of 4h of sunshine, December has the least sunshine of the year.

When is the lowest UV index?

The month with the lowest UV index is December, with an average maximum UV index of 1.

Average temperature
Wasilla, AK

Average temperature - Wasilla, AK

The warmest month (with the highest average high temperature) is July (63.3°F).
The month with the lowest average high temperature is January (18.3°F).

The month with the highest average low temperature is July (47.1°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).

Average pressure
Wasilla, AK

Average pressure - Wasilla, AK

The month with the highest atmospheric pressure is July (29.96"Hg).
The month with the lowest atmospheric pressure is December (29.69"Hg).

Average wind speed
Wasilla, AK

Average wind speed - Wasilla, AK

The windiest months (with the highest average wind speed) are January, November and December (4.8mph).
The calmest month (with the lowest average wind speed) is July (4mph).

Average rainfall
Wasilla, AK

Average rainfall - Wasilla, AK

The wettest month (with the highest rainfall) is August (0.94").
The driest month (with the least rainfall) is January (0.31").

Average rainfall days
Wasilla, AK

Average rainfall days - Wasilla, AK

The month with the highest number of rainy days is June (14 days).
The month with the least rainy days is February (6.8 days).

Average snowfall
Wasilla, AK

Average snowfall - Wasilla, AK

The month with the highest snowfall is December (2.64").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Wasilla, AK

Average snowfall days - Wasilla, AK

The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine
Wasilla, AK

Average daylight / Average sunshine - Wasilla, AK

The month with the longest days is June (Average daylight: 19h and 24min).
The month with the shortest days is December (Average daylight: 5h and 30min).

The month with the most sunshine is May (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 4h).

Average sunshine days
Wasilla, AK

Average sunshine days - Wasilla, AK

The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is June (9.3 days).

Average visibility
Wasilla, AK

Average visibility - Wasilla, AK

The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is March (4mi).

Wasilla, Alaska, USA

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