Shannon, KS climate
Shannon has chilly winters and warm summers. A typical July afternoon reaches 88°, a January night drops to 19°, and about 17 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Shannon feels like
Winter
Spring
Summer
Fall
Shannon 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 | 37° | 19° | 0.9" | 5.0" | 5 | 8 | 21° – 40° |
| February | 43° | 23° | 1.2" | 4.8" | 5 | 7 | 23° – 42° |
| March | 55° | 33° | 2.1" | 1.8" | 7 | 2 | 37° – 59° |
| April | 66° | 43° | 3.7" | 0.4" | 10 | 0 | 46° – 60° |
| May | 75° | 54° | 5.0" | 0 | 11 | 0 | 59° – 74° |
| June | 84° | 63° | 4.9" | 0 | 10 | 0 | 70° – 78° |
| July | 88° | 68° | 5.0" | 0 | 9 | 0 | 73° – 84° |
| August | 87° | 66° | 4.0" | 0 | 8 | 0 | 71° – 82° |
| September | 79° | 56° | 3.6" | 0 | 8 | 0 | 62° – 74° |
| October | 67° | 44° | 3.1" | 0.3" | 7 | 0 | 49° – 60° |
| November | 53° | 33° | 1.9" | 0.9" | 5 | 1 | 35° – 51° |
| December | 41° | 23° | 1.4" | 3.8" | 5 | 5 | 18° – 39° |
| Year | 65° | 44° | 36.7" | 17.0" | 89 | 23 |
“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 Shannon
Shannon gets 37 inches of rain and melted snow a year. July is the wettest month and January the driest. Rain or snow falls on about 89 days a year. Snow covers the ground about 23 days of the year.
About 199 frost-free days a year
In half of years the last 32° night comes by April 11 and the first one by October 29. That leaves about 199 frost-free days for gardens, longer than 72% of U.S. towns.
Heating and cooling a home in Shannon
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Shannon, 79% of that work is heating and 21% is cooling.
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.
Shannon and its neighbors
Shannon borders 5 towns with climate data. January nights across them vary by 0.6°. Independence has the coldest January nights (18°) and Atchison the hottest July afternoons (88°). Shannon’s January low is 19° and its July high 88°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Shannon 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 Shannon averaged 0.7° warmer than the 1900s. The biggest change is in March (+2.1°). The shift is smaller than in 88% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Shannon’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. March swings the most: between 1991 and 2020 its average temperature ranged from 37° to 59°. June is the most reliable, staying within 8°.
Common questions about Shannon’s climate
What is the coldest month in Shannon?
January, with a typical high of 37° and a low of 19°.
What is the hottest month in Shannon?
July, with a typical high of 88° and a low of 68°. About 38 days a year reach 90°.
How much snow does Shannon get?
About 17 inches in a normal winter, most of it in January.
When is the first frost in Shannon?
In half of years the first 32° night comes by October 29, and the last spring frost by April 11.
What is the rainiest month in Shannon?
July, with 5.0 inches of rain and melted snow. The year totals 37 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Shannon itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Atchison, KS (3 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.