Olathe Johnson County, KS Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Olathe Johnson County's primary NOAA station, OLATHE JOHNSON CO AP.
The climate verdict for Olathe Johnson County
Olathe Johnson County, Kansas has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 55°F. It scores 80/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 76% of them.
- 55°F
- yearly average temperature, NOAA normal
- 80/100
- comfort score, above 76% of station-mapped location scores
- 37.5"
- yearly precipitation total
- 194 days
- frost-free growing season
Olathe Johnson County: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00093909 · Olathe Johnson County, KS 55°F mean · 37.5" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-TOP · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-MILD 55°F
- RANK-UPPER #4,185
- PHOTO-FINISH ≈ Olathe
- PRCP-MID 37.5"
- SWING-WIDE 49°F
- COMF-TOP 80/100
- LOAD-HEAT 4,976 HDD
- STN-1 USW00093909
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Olathe, KS (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every KS station list.
- Olathe Johnson… (this station) 55°F
- Cold Dewey, UT 55°F
- Hot Pratt, KS 55°F
- Near Olathe, KS 55°F
- Near Cassoday, KS 55°F
Climate Living Index · Olathe Johnson County
Olathe Johnson County: 66/100 · grade C
Olathe Johnson County publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Olathe Johnson County, not an official NOAA rating. Rankings still use Comfort Score 80/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 37.5 in · 2.5 from 35 in | 90/100 · A |
| Normal heat + freeze calendar | 126 calendar days | 61/100 · C |
| Annual temperature balance | 55.1°F · 12.4° from 67.5°F | 60/100 · C |
| Frost-free season | 194 days/year | 60/100 · C |
Olathe Johnson County · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Olathe Johnson County is a continental Köppen climate: Dfa
Coldest-month mean 29.8°F and warmest-month mean 78.8°F place this station in continental, no dry season, hot summer climates (Dfa). Class Dfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, hot summer.
- Köppen code
- Dfa
- Group
- Continental
- Warmest month
- 78.8°F
- Coldest month
- 29.8°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Olathe Johnson County sits across the climate record
Three NOAA fields for Olathe Johnson County's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 61st percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 53rd percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Wider than 78%
- Warmest-to-coldest month gap for Olathe Johnson County is large versus 6,861 complete station-years.
How Olathe Johnson County compares across U.S. station-mapped locations
Olathe Johnson County's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
80 Top 24% score exceeds 76% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). Below this entry.
- 80–90: 921 station-mapped locations (15%). This entry sits in this band.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Olathe Johnson County's measured station temperature trend
MethodologyAcross 45 complete annual observations from 1948 to 2025, OLATHE JOHNSON CO AP warmed at a fitted rate of 0.09°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Olathe Johnson County primary station fitted change +0.09 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 39°F (4°C) | 20°F (-7°C) | 30°F (-1°C) | 1.1" | 27.6 | 0.0 |
| February | 44°F (7°C) | 24°F (-4°C) | 34°F (1°C) | 1.5" | 22.5 | 0.0 |
| March | 56°F (13°C) | 34°F (1°C) | 45°F (7°C) | 2.3" | 14.1 | 0.0 |
| April | 66°F (19°C) | 44°F (6°C) | 55°F (13°C) | 3.8" | 3.8 | 0.1 |
| May | 75°F (24°C) | 54°F (12°C) | 65°F (18°C) | 5.1" | 0.2 | 1.0 |
| June | 85°F (29°C) | 64°F (18°C) | 75°F (24°C) | 5.3" | 0.0 | 8.4 |
| July | 89°F (32°C) | 68°F (20°C) | 79°F (26°C) | 4.2" | 0.0 | 15.9 |
| August | 88°F (31°C) | 67°F (19°C) | 77°F (25°C) | 4.0" | 0.0 | 13.9 |
| September | 80°F (27°C) | 58°F (14°C) | 69°F (20°C) | 3.7" | 0.0 | 4.1 |
| October | 68°F (20°C) | 46°F (8°C) | 57°F (14°C) | 3.3" | 2.9 | 0.3 |
| November | 54°F (12°C) | 34°F (1°C) | 44°F (7°C) | 1.9" | 13.2 | 0.0 |
| December | 43°F (6°C) | 24°F (-4°C) | 34°F (1°C) | 1.5" | 25.3 | 0.0 |
The year, day by day
Olathe Johnson County works both ends of the calendar. Normal highs climb to 90°F by July 24 and hold at or above 90°F on 14 dates, then normal lows drop to freezing or below on 112 dates, bottoming at 20°F around January 14.
When the heat sits
Normal highs reach 90°F from July 21 through August 3, covering 14 dates. The broader mild season, normal highs of 70°F or more, runs April 30 to October 10.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
The freezing stretch
The normal low stays at or below 32°F into March 10, then returns to freezing around November 20, covering 112 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is May 8, when 42% of years recorded at least a hundredth of an inch. The driest is January 7 at 17%. Summed across the calendar, that is about 105 wet dates a year.
The widest day
March 28 carries the biggest normal gap between afternoon and dawn, 23°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Olathe Johnson County.
Where Olathe Johnson County Stands Nationally
Days and nights track unusually close together; the widest normal swing, about 23°F, is narrower than most stations record.
Olathe Johnson County earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
5.5 days with precipitation
6.4 days with precipitation
9.4 days with precipitation
11.0 days with precipitation
13.4 days with precipitation
11.1 days with precipitation
9.3 days with precipitation
9.4 days with precipitation
9.0 days with precipitation
8.9 days with precipitation
6.1 days with precipitation
5.7 days with precipitation
Olathe Johnson County runs a summer-peaked wet season
36% of Olathe Johnson County's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is June at 5.3", on a wide 49°F gap between its warmest and coldest month. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: June, May, July, taking 39% of the annual total between them.
- Driest month: January at 1.1".
- Winter share: 11% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
When it rains in Olathe Johnson County, it arrives in quantity
37.5" of precipitation falls across only about 105 wet days here, averaging 0.36 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 105 a year, 29% of all days
- Average depth per wet day
- 0.36 inches
- Most wet days
- May, about 13
- Fewest wet days
- January, about 6
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Frost Dates & Growing Season
First Fall Freeze
October 24
50% probability date
Last Spring Freeze
April 13
50% probability date
Growing Season
194 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,976
Higher = more heating needed
Cooling Degree Days
1,416
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside KS closest to Olathe Johnson County on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (55°F here).
- Atlantic City, NJ 55°F · 0.0°F off
- Bluff, UT 55°F · 0.0°F off
- Nashville, IL 55°F · 0.0°F off
- Oneida, TN 55°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (37.5" here), excluding temperature-peer places.
- Weaverville, CA 37.5" · 0.0" off
- Burlington, VT 37.5" · 0.0" off
- Paddock Lake, WI 37.5" · 0.0" off
- Boerne, TX 37.5" · 0.0" off
Data-derived climate profile
How Olathe Johnson County's climate pattern fits together
heating led · moderate · mid swing
Olathe Johnson County's energy balance leans toward cold weather: 4,976 annual heating degree days against 1,416 for cooling. Its 49.0°F seasonal range still makes the monthly rows more useful than the annual average alone.
Olathe Johnson County's frost-free season lasts about 194 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Olathe Johnson County's middle-range seasonal profile. The measured spread is 49.0°F. The annual average is 55°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Olathe Johnson County's 37.5 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Olathe Johnson County's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Olathe Johnson County, not an official NOAA class or a year-ahead forecast.
Questions about Olathe Johnson County's climate
How much rain does Olathe Johnson County get? ▼
How many days above 90°F does Olathe Johnson County get? ▼
How much energy does heating and cooling require in Olathe Johnson County? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Olathe Johnson County's primary station: OLATHE JOHNSON CO AP (USW00093909). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Olathe Johnson County; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Olathe Johnson County comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.