Map centered on Alaska March 1-16, 2026 average temperature departures from the 1991-2020 baseline average (ºF) over land areas. Temperature averaged more than 20ºF below normal in upper Bristol Bay area. Only areas above normal western North Slope and southern Southeast Alaska and northern British Columbia.

Map centered on Alaska March 1-16, 2026 average temperature departures from the 1991-2020 baseline average (ºC) over land areas. Temperature averaged more than 12ºC below normal in upper Bristol Bay area. Only areas above normal western North Slope and southern Southeast Alaska and northern British Columbia.

First half of March average temperature departures from the 1991-2020 baseline for Alaska and vicinity based on ERA5 Land courtesy @copernicusecmwf.bsky.social. Bristol Bay/Iliamna Lake area coldest relative to normal but central Interior & central Yukon Territory close behind. #akwx #ytwx #Climate

Splash screen for the post: Alaska and NW Canada Cold Snap Review: Winter 2025-26 is one to remember

The December and early January cold snap across Alaska and NW Canada may well turn out to be one of the coldest multi-week events of the 21st century. Lots of details in the latest from the Alaska and Arctic Climate newsletter. #akwx #ytwx #Arctic #Climate

alaskaclimate.substack.com/p/alaska-and...

Splash screen for the post: January 2026 Arctic and Alaska Snowpack: Regional variability rules

Seems unimportant in this moment, but if keeping up with environmental conditions in the North can bring you a calmer few minutes, here's an update on the status of the Arctic and Alaska and vicinity snowpack as of mid-January. #Arctic #akwx #ytwx #Snow

alaskaclimate.substack.com/p/january-20...

Map centered on Alaska showing the January 16 snowpack snow water equivalent as a percent of the 1991-2020 baseline median.

Alaska and vicinity snowpack snow water equivalent as of Jan 16 was quite low relative to the 1991-2020 median over much of Southcentral and west/southwest Alaska. The southern YT and northern BC with well above normal snowpack. ERA5 data courtesy @copernicusecmwf.bsky.social. #akwx #ytwx #Snow

Yukon climate factoid: the temperature at Dawson remained below -15C from December 5 through January 15, and all but three of those days had high temperatures below -20C. Also, 25 days with lows in the 40s below with a low of -49.1C on Jan 4th. #ytwx @jkanadisk.bsky.social @explorenorth.bsky.social

Map centered on Alaska showing site-specific high temperatures (ºC) on Sunday, January 4, 2026. Plotted temperature range from -53C at Chicken to +4C at Unalaska.

Low temperatures (ºC) in and around Alaska on Sunday. Really cold except for the lower Alaska Peninsula and Aleutians/Pribilofs. #akwx #ytwx #weather @explorenorth.bsky.social @jkanadisk.bsky.social

December 2025 in the Yukon Territory was the easily the coldest December since 1980, 9ºC below the 1991-2020 baseline average. Coldest any month since Jan 1996. ERA5 data courtesy @copernicusecmwf.bsky.social. #ytwx #Canada @explorenorth.bsky.social @jkanadisk.bsky.social @evaholland.bsky.social

Sunday morning low temperatures through 9am AKST:

Chicken: -63F (-52.8C)
Tok: -60F (-51.1C)
Northway: -59F (-50.6C)
Beaver Crk, YT: -57F (-49.7C)
Eagle Airport: -56F (-48.9C)
Dawson, YT: -56F (-48.7C)
Ft. Yukon: -55F (-48.3C)
Nenana: -54F (-47.8C)
Fairbanks Airport: -50F (-50.6C)
#Cold #akwx #ytwx

Now for something completely chilling: Dec 2025 average temps…
Chicken, AK: -35.5F,-37.5C
Ft. Yukon, AK: -31.2F, -35.1C
Dawson, YT: -30.8F, -34.9C
Mayo, YT: -29.9F, -34.4C
Tok, AK: -29.8F, -33.8C
Northway, AK: -28.8F, -33.8C
Fairbanks, AK: -22.8F, -30.4C
Whitehorse, YT: -15.0F, -26.1C
#akwx #ytwx

December was a colder-than-normal month this year - especially up around the Yukon and northern Alberta. Maritime provinces 1 to 3 degrees below normal. #nswx #pewx #nbwx #abwx #ytwx

Map centered on Alaska showing the December 22, 2025 average temperature difference from the 1991-2020 baseline average.

On December 22, the overall Yukon Territory average temperature was just over 20ºC (37ºF) below normal. For Alaska, almost 11ºC (19ºF) below normal. Base on ERA5 Land courtesy of ECMWF/Copernicus. #akwx #ytwx #Winter2026 @climatologist49.bsky.social

Two maps centered on Alaska showing the temperature departure from the 1911-2020 baseline for December 21, 2025 (top) and December 22, 2025 (bottom). Color scale is labeled in both ºC and ºF.

The two coldest days in the Yukon Territory (so far) in the ongoing cold snap were Dec 21 and 22. Here's the regional view of daily average temperatures relative to the 1991-2020 baseline. Huge area more than 15C/27F below normal. From ERA5 Land courtesy of ECMWF/Copernicus. #akwx #weather #ytwx

The cold snap in Alaska and the Yukon is now into week four and will continue for days. The latest from the Alaska and Arctic Climate newsletter provides some background on long duration cold events in northwest North America. #akwx #ytwx #Arctic #Climate

alaskaclimate.substack.com/p/ongoing-co...

Friday was the 19th consecutive days with a low temperature of -40C/F or lower at Dawson, Yukon Territory. The streak could end today. The record longest such streak is "at least" 33 days, Nov 29 to Dec 31, 1917. Data courtesy ECCC. #ytwx #Winter2026 @jkanadisk.bsky.social @explorenorth.bsky.social

Map centered on Alaska showing site-specific low temperatures (ºC) on Monday, December 22, 2025. Plotted temperature range from -52C at Chicken, AK and Faro, YT to +4C at Unalaska,

The ºC version of low temperatures in and around Alaska and the Yukon Territory on Monday. 2/2 #ytwx #weather @explorenorth.bsky.social @jkanadisk.bsky.social @evaholland.bsky.social

Map centered on the southern Yukon Territory showing aviation weather observations at specific locations at 6am AKST/8am MST Monday, December 22, 2025.

Now we've got serious cold. At 6am AKDT/8am MDT Monday, -62F/-52C at Faro, YT and -60F/-51C at Carmacks, YT. In Alaska, Northway at -55F/-48C. #akwx #ytwx #Weather #Cold #Winter2026 @climatologist49.bsky.social@evaholland.bsky.social

Splash screen for the Alaska and Arctic Climate newsletter post: Alaska Early December 2025 Extreme Weather: Wind and cold to start the month

Short post from the Alaska and Arctic Climate Newsletter on an active early December, including some details about the Mat-Su wind storm and Interior/Yukon cold snap. #akwx #ytwx #weather

alaskaclimate.substack.com/p/alaska-ear...

Tuesday low temperatures reported through 9pm MST/7pm AKST for the Yukon Territory/Alaska border county:

Northway, AK -46.1C/-51F
Tok, AK: -47.2C/-53F
Beaver Creek, YT: -46.9C/-52F
Burwash, YT: -45.7C/-50F
Dawson, YT: -43.5C/-46F
Whitehorse, YT: -36.2C/-33F
#akwx #ytwx
@explorenorth.bsky.social

Splash screen for the post “Summer 2025 Northern North American Wildfire: Above median but less than 2022-2024

The 2025 wildfire season is about done in Alaska and the Yukon Territory, but is still going in the NWT. Seasonal review for northern North America wildfire now posted in the latest from the Alaska and Arctic Climate newsletter. #akwx #ytwx #ntwx #Canada

alaskaclimate.substack.com/p/summer-202...

Map from NASA FIRMS with the area burned to July 27, 2025 for Alaska, Yukon Territory and Northwest Territories annotated.

Northern North America wildfire area burned updated to Sunday. Area burned is higher than last year at this point in the season. Alaska has burned about 42 percent more area, Yukon Territory about 17 percent more and the Northwest Territories about 4 percent more. #akwx #ytwx #ntwx #Wildfire2025

Map of Alaska and the Yukon Territory showing reported PM2.5 Air Quality Index values at about 715am AKDT/815am MST Sunday, July 27, 2025.

Smoke from wildfires has moved back into the Fairbanks area Sunday morning. The source of the smoke isn't evident, but the most obvious source the Yellow Fire south of Beaver. Otherwise air quality mostly good in Alaska and the Yukon Territory. Data and Graphic courtesy PurpleAir. #akwx #ytwx #Smoke

Map of Alaska and the Yukon Territory showing reported Air Quality Index values at about 730am AKDT/830am MST on Monday, July 21, 2025. Data and graphic courtesy PurpleAir.

Wildfire smoke is lowering air quality in the Whitehorse, YT area Monday morning as well as some areas farther downriver in the Yukon river valley. Air quality generally in the "good" category in Alaska based on PurpleAir reports and webcams. #akwx #ytwx #Smoke #Summer2025

Map of Alaska and the Yukon Territory showing PM 2.5 Air Quality Index reports from the PurpleAir network as of about 715am AKDT/815am MST on Monday, July 14, 2025.

Smoke from wildfires evident in the available PM2.5 air quality reports in Alaska and the Yukon Territory early Monday. AQI improved in the Fairbanks area but remains poor at Coldfoot and surely much of the rest of the northern Interior. Graphic courtesy PurpleAir. #akwx #ytwx #Smoke #Summer2025

Visible satellite image centered on Interior Alaska taken at 600am AKDT Sunday, July 13, 2025. In addition to widespread smoke, areas of clouds are clearly seen and sea ice in the Beaufort Sea.

Early Sunday morning visible satellite image with the low angle sun highlighting the widespread wildfire smoke across Interior Alaska, parts of the Brooks Range and the western Yukon Territory. NOAA-21 polar orbiter image courtesy @alaskagina.bsky.social. #akwx #ytwx #Smoke #Summer2025

Map of Alaska and the Yukon Territory plotting reported PM2.5 Air Quality Index values as of about 715am AKDT/815am MST on Sunday, July 13, 2025.

Sunday morning and wildfire smoke is degrading air quality though much of central/northern Interior Alaska, though the lack of observations is an issue. Some of the smoke has worked up the Yukon River valley into the Yukon Territory. Graphic courtesy PurpleAir. #akwx #ytwx #Smoke #Summer2025

Map of Alaska and the Yukon Territory showing reported PM2.5 AQIs through the PurpleAir network at about 845am AKDT/945am MST.

Air quality Wednesday morning in Alaska and the Yukon was mostly in the good to moderate categories thanks to lower temperatures and some rain. Graphic courtesy PurpleAir. #akwx #ytwx #weather #Smoke @climatologist49.bsky.social

Map of Alaska and the Yukon Territory showing reported PM2.5 AQI values at about 915am AKDT/1015am MST Tuesday, July 8, 2025.

Air quality Tuesday morning in Interior Alaska widely in the sensitive and unhealthy categories from wildfire smoke but worse in the Fairbanks, AK & Dawson, YT areas. Air quality mostly good Alaska Range southward and southern Yukon Territory. Graphic/data courtesy PurpleAir. #akwx #ytwx #Summer2025

Map of Alaska and the Yukon Territory showing reported PM2.5 AQI values at about 730am AKDT/830am MST Monday, July 7, 2025.

Air quality Monday morning in Interior Alaska widely in the sensitive and unhealthy categories from wildfire smoke but worse in the Fairbanks, AK & Dawson, YT areas. Air quality mostly good Alaska Range southward and southern Yukon Territory. Graphic/data courtesy PurpleAir. #akwx #ytwx #Summer2025

Map of Alaska and the Yukon Territory showing reported PM2.5 AQI values at about 745am AKDT/845am MST Sunday, July 6, 2025.

Air quality Sunday morning in central/western Alaska Interior n the sensitive and unhealthy categories from wildfire smoke but worse in the Fairbanks area. Air quality has improved along the Parks Hwy south of Nenana. Graphic and data courtesy PurpleAir. #akwx #ytwx #Summer2025

Map of Alaska and the Yukon Territory showing reported PM2.5 AQI values at about 745am AKDT/845am MST Saturday, July 5, 2025.

Air quality Saturday morning in central/western Alaska widely in the sensitive and unhealthy categories from wildfire smoke. Webcams show that air quality is also degraded in some places between Fairbanks and Galena that lack AQI sensors. Graphic and data courtesy PurpleAir. #akwx #ytwx #Summer2025