South Haven, KS climate
South Haven has chilly winters and hot summers. A typical July afternoon reaches 94°, a January night drops to 24°, and about 10 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in South Haven feels like
Winter
Spring
Summer
Fall
South Haven 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 | 46° | 24° | 1.0" | 2.2" | 5 | 3 | 30° – 45° |
| February | 51° | 27° | 1.4" | 2.5" | 5 | 2 | 33° – 47° |
| March | 61° | 36° | 2.6" | 1.7" | 7 | 1 | 42° – 59° |
| April | 70° | 45° | 3.3" | 0 | 8 | 0 | 51° – 64° |
| May | 79° | 56° | 5.2" | 0 | 11 | 0 | 62° – 75° |
| June | 89° | 66° | 5.0" | 0 | 9 | 0 | 72° – 83° |
| July | 94° | 70° | 3.9" | 0 | 8 | 0 | 77° – 90° |
| August | 92° | 69° | 3.8" | 0 | 8 | 0 | 74° – 87° |
| September | 84° | 60° | 3.0" | 0 | 7 | 0 | 68° – 80° |
| October | 72° | 48° | 3.2" | 0.1" | 7 | 0 | 53° – 66° |
| November | 59° | 36° | 1.7" | 0.3" | 5 | 0 | 41° – 55° |
| December | 48° | 26° | 1.4" | 3.1" | 5 | 3 | 26° – 42° |
| Year | 70° | 47° | 35.5" | 9.9" | 83 | 9 |
“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 South Haven
South Haven gets 36 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 83 days a year. Snow covers the ground about 9 days of the year.
About 195 frost-free days a year
In half of years the last 32° night comes by April 15 and the first one by October 29. That leaves about 195 frost-free days for gardens, longer than 69% of U.S. towns.
Heating and cooling a home in South Haven
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In South Haven, 73% of that work is heating and 27% 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.
How South Haven 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 South Haven averaged 0.9° warmer than the 1900s. The biggest change is in January (+2.5°). The shift is smaller than in 76% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at South Haven’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 42° to 59°. June is the most reliable, staying within 11°.
Common questions about South Haven’s climate
What is the coldest month in South Haven?
January, with a typical high of 46° and a low of 24°.
What is the hottest month in South Haven?
July, with a typical high of 94° and a low of 70°. About 67 days a year reach 90°.
How much snow does South Haven get?
About 10 inches in a normal winter, most of it in December.
When is the first frost in South Haven?
In half of years the first 32° night comes by October 29, and the last spring frost by April 15.
What is the rainiest month in South Haven?
May, with 5.2 inches of rain and melted snow. The year totals 36 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for South Haven itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Caldwell, KS (12 mi, snow) and Wellington, KS (15 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.