Olathe weather by month
Average highs run from 39°F in January to 88°F in July, and January nights average 20°F. It gets 41 inches of rain and melted snow a year and 14 inches of snow. Expect about 34 days a year at 90°F or hotter. Nights drop below freezing about 98 times a year. The most comfortable months are April and September to October.
Best time to visit Olathe
For comfortable weather, go in April and September to October. In those months the average high stays between 62°F and 86°F, nights average 42°F or warmer, and rain stays under 4.5 inches for the month.
Month by month
| Month | High | Low | Precip. | Snow | Wet days | Days 90°F+ | Nights below 32°F | Feels |
|---|---|---|---|---|---|---|---|---|
| January | 39°F | 20°F | 1.3 in | 3.9 in | 4 | 0 | 27 | cold |
| February | 44°F | 24°F | 1.7 in | 3.3 in | 4 | 0 | 20 | cold |
| March | 55°F | 34°F | 2.5 in | 1.4 in | 5 | 0 | 13 | cool |
| April | 65°F | 44°F | 4.1 in | 0.3 in | 7 | 0 | 3 | mild |
| May | 75°F | 56°F | 5.3 in | 0.0 in | 8 | 1 | 0 | mild |
| June | 84°F | 65°F | 5.2 in | 0.0 in | 8 | 5 | 0 | warm |
| July | 88°F | 69°F | 4.8 in | 0.0 in | 7 | 13 | 0 | hot |
| August | 87°F | 67°F | 4.5 in | 0.0 in | 5 | 13 | 0 | warm |
| September | 79°F | 58°F | 4.3 in | 0.0 in | 6 | 3 | 0 | warm |
| October | 68°F | 47°F | 3.1 in | 0.3 in | 5 | 0 | 1 | mild |
| November | 54°F | 35°F | 2.4 in | 1.2 in | 4 | 0 | 12 | cool |
| December | 43°F | 25°F | 1.8 in | 3.4 in | 4 | 0 | 23 | cold |
| Year | 65°F avg | 45°F avg | 40.7 in | 13.8 in | 65 | 34 | 98 |
"Wet days" are days with at least 0.1 inch of precipitation. "Feels" is a plain-language label for the average high. Normals for 1991-2020 from NOAA NCEI, station Olathe 3E, KS (USC00145972), 3.3 miles from the city center. Averages describe typical conditions, not a forecast.
Sunrise, sunset and daylight in Olathe
The shortest day is December 21, with 9h 26m of daylight; the longest is June 21, with 14h 53m. The earliest sunset comes around December 3 (4:56 pm) and the latest around June 22 (8:48 pm). The sun sets after 8 pm on 128 days a year.
| On the 15th of | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:36 am | 5:21 pm | 9h 45m |
| February | 7:10 am | 5:56 pm | 10h 46m |
| March | 7:30 am | 7:26 pm | 11h 56m |
| April | 6:42 am | 7:56 pm | 13h 13m |
| May | 6:06 am | 8:24 pm | 14h 18m |
| June | 5:53 am | 8:46 pm | 14h 53m |
| July | 6:06 am | 8:43 pm | 14h 37m |
| August | 6:33 am | 8:13 pm | 13h 40m |
| September | 7:01 am | 7:27 pm | 12h 26m |
| October | 7:29 am | 6:40 pm | 11h 11m |
| November | 7:02 am | 5:05 pm | 10h 03m |
| December | 7:31 am | 4:57 pm | 9h 27m |
Calculated for 2026 at the center of Olathe with NOAA's solar equations, in local clock time (Central Time, including daylight saving time where it applies). Times shift by a minute or two from year to year.
Is Olathe getting warmer?
The last 10 years averaged 2.0°F warmer than the 20th century. See the climate stripes for Olathe.Frequently asked questions
What is the warmest month in Olathe?
July is the warmest month, with an average high of 88°F and an average low of 69°F (NOAA 1991-2020 normals).
What is the coldest month in Olathe?
January is the coldest, with average lows of 20°F and highs of 39°F.
What is the rainiest month in Olathe?
May gets the most precipitation, 5.3 inches on average. January is the driest at 1.3 inches.
Does it snow in Olathe?
Yes. Olathe averages 14 inches of snow a year.
When is the best time to visit Olathe?
For comfortable weather, April and September to October. Those months average highs between 62 and 86°F with lows of 42°F or more and modest rain.
Thinking of moving to Olathe?
See what homes, rent and everyday prices cost, who lives there and how it compares with nearby cities on the full Olathe profile.
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