Na-Au-Say, IL climate
Na-Au-Say has chilly winters and warm summers. A typical July afternoon reaches 84°, a January night drops to 16°, and about 29 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Na-Au-Say feels like
Winter
Spring
Summer
Fall
Na-Au-Say 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 | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 31° | 16° | 2.0" | 9.0" | 11 | 16 | 14° – 36° |
| February | 36° | 19° | 1.7" | 8.1" | 9 | 14 | 15° – 39° |
| March | 48° | 29° | 2.3" | 3.0" | 11 | 4 | 29° – 53° |
| April | 61° | 39° | 3.8" | 0.5" | 13 | 0 | 41° – 56° |
| May | 72° | 50° | 4.6" | 0 | 14 | 0 | 55° – 67° |
| June | 81° | 59° | 4.5" | 0 | 12 | 0 | 66° – 75° |
| July | 84° | 64° | 4.1" | 0 | 10 | 0 | 69° – 80° |
| August | 83° | 62° | 4.0" | 0 | 10 | 0 | 67° – 78° |
| September | 76° | 54° | 3.2" | 0 | 9 | 0 | 59° – 70° |
| October | 64° | 42° | 3.4" | 0 | 11 | 0 | 48° – 59° |
| November | 49° | 31° | 2.6" | 1.0" | 10 | 1 | 33° – 49° |
| December | 36° | 22° | 2.1" | 7.6" | 12 | 11 | 15° – 39° |
| Year | 60° | 41° | 38.1" | 29.2" | 131 | 47 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Na-Au-Say
Na-Au-Say gets 38 inches of rain and melted snow a year. May is the wettest month and February the driest. Rain or snow falls on about 131 days a year. Snow covers the ground about 47 days of the year.
About 185 frost-free days a year
In half of years the last 32° night comes by April 19 and the first one by October 23. That leaves about 185 frost-free days for gardens, longer than 58% of U.S. towns.
Heating and cooling a home in Na-Au-Say
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Na-Au-Say, 87% of that work is heating and 13% 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.
Na-Au-Say and its neighbors
Na-Au-Say borders 4 towns with climate data. January nights across them vary by 0.7°. Kendall has the coldest January nights (16°) and Seward the hottest July afternoons (85°). Na-Au-Say’s January low is 16° and its July high 84°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Na-Au-Say compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Na-Au-Say averaged 1.2° warmer than the 1900s. The biggest change is in December (+2.4°). The shift is larger than in 52% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Na-Au-Say’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 15° to 39°. June is the most reliable, staying within 8°.
Common questions about Na-Au-Say’s climate
What is the coldest month in Na-Au-Say?
January, with a typical high of 31° and a low of 16°.
What is the hottest month in Na-Au-Say?
July, with a typical high of 84° and a low of 64°. About 17 days a year reach 90°.
How much snow does Na-Au-Say get?
About 29 inches in a normal winter, most of it in January.
When is the first frost in Na-Au-Say?
In half of years the first 32° night comes by October 23, and the last spring frost by April 19.
What is the rainiest month in Na-Au-Say?
May, with 4.6 inches of rain and melted snow. The year totals 38 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Na-Au-Say itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Plainfield 3 Ne, IL (7 mi, snow) and Aurora, IL (13 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.