Deltana, AK climate
Deltana has cold, snowy winters and cool summers, with very little rain. A typical July afternoon reaches 71°, a January night drops to -13°, and about 42 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Deltana feels like
Winter
Spring
Summer
Fall
Deltana weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground |
|---|---|---|---|---|---|---|
| January | 5° | -13° | 0.4" | 6.3" | 4 | 29 |
| February | 15° | -8° | 0.3" | 5.1" | 4 | 25 |
| March | 26° | -4° | 0.3" | 4.4" | 3 | 26 |
| April | 46° | 17° | 0.3" | 2.4" | 3 | 13 |
| May | 61° | 32° | 0.9" | 0.5" | 7 | 0 |
| June | 70° | 43° | 2.2" | 0 | 11 | 0 |
| July | 71° | 46° | 2.2" | 0 | 14 | 0 |
| August | 66° | 40° | 2.3" | 0 | 13 | 0 |
| September | 55° | 30° | 1.2" | 1.0" | 9 | 0 |
| October | 34° | 15° | 0.8" | 8.0" | 6 | 9 |
| November | 14° | -2° | 0.6" | 7.7" | 6 | 24 |
| December | 8° | -9° | 0.5" | 6.8" | 5 | 26 |
| Year | 39° | 16° | 11.8" | 42.2" | 82 | 152 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more.
Rain and snow in Deltana
Deltana gets 12 inches of rain and melted snow a year. August is the wettest month and April the driest. Rain or snow falls on about 82 days a year. Snow covers the ground about 152 days of the year.
About 75 frost-free days a year
In half of years the last 32° night comes by June 5 and the first one by August 21. That leaves about 75 frost-free days for gardens, shorter than 100% of U.S. towns.
Heating and cooling a home in Deltana
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Deltana, 100% of that work is heating and 0% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Deltana and its neighbors
Deltana borders 2 towns with climate data. January nights across them vary by 7.8°. Big Delta has both the coldest January nights (-16°) and the hottest July afternoons (70°). Deltana’s January low is -13° and its July high 71°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Deltana compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Common questions about Deltana’s climate
What is the coldest month in Deltana?
January, with a typical high of 5° and a low of -13°.
What is the hottest month in Deltana?
July, with a typical high of 71° and a low of 46°.
How much snow does Deltana get?
About 42 inches in a normal winter, most of it in October.
When is the first frost in Deltana?
In half of years the first 32° night comes by August 21, and the last spring frost by June 5.
What is the rainiest month in Deltana?
August, with 2.3 inches of rain and melted snow. The year totals 12 inches.
NOAA’s gridded normals don’t cover this state, so temperatures and rainfall come from the nearest weather station. Snow, frost dates and day counts come from NOAA’s weather station at Delta Junction 20 Se, AK (14 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020.