Olathe weather in August

In August, Olathe sees average daytime highs of 86°F and overnight lows near 68°F, with 3.7 in of rain across 9 wet days and about 13.5 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 86°F through the month. The sky is clear or mostly clear about 46% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 06 min at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Olathe's 4th-clearest and 12th-windiest month. For the whole year in context, see Olathe's year-round climate.

Daytime high
86°
2nd warmest
Overnight low
68°
11th coldest
Rainfall
3.7 in
9 wet days
Daylight
13 h 30 min
5:37 AM – 7:09 PM
Cloud cover
47%
4th clearest
Wind
6 mph
12th windiest
Solar energy
5.85 kWh/m²
Travel score
5.2
out of 10

Olathe is county seat of Johnson County, Kansas, United States.

Density
858/km²
people per km²
Founded
1857

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 86°F through the month.

A typical August day in Olathe reaches about 86°F in the afternoon and slips back to 68°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 77°F and 95°F. Set against its neighbours, August runs about 2°F cooler than July and about 8°F warmer than September.

60°80°100°151015202531
Avg high (°F)Avg low (°F)
18770
28770
38770
48769
58769
68769
78769
88769
98769
108769
118669
128668
138668
148668
158668
168668
178668
188668
198668
208667
218667
228667
238667
248667
258667
268567
278567
288566
298566
308566
318465

How August really feels in Olathe

Once humidity and wind are folded in, August averages 1 day that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
1
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Olathe weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan39° / 22°1.45.63.49.60.0
Feb44° / 26°1.85.92.810.50.7
Mar55° / 36°3.09.11.911.73.5
Apr65° / 46°4.711.10.3135.7
May74° / 56°5.712.70.114.16.3
Jun83° / 66°4.811.3014.75.6
Jul88° / 70°3.69.4014.44.7
Aug86° / 68°3.79013.55.2
Sep78° / 59°3.68.1012.37.1
Oct66° / 47°3.380.2116.6
Nov53° / 36°2.36.40.99.93.4
Dec42° / 26°1.85.62.59.30.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16238
26238
36238
46238
56238
66238
76238
86238
96238
106337
116337
126337
136238
146337
156337
166337
176337
186436
196337
206337
216436
226337
236337
246337
256337
266436
276436
286535
296634
306634
316634

Chance of precipitation in August

Any precipitation

Olathe gets around 3.7 in of rain over 9 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 29% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
129
229
329
429
529
629
728
828
928
1028
1128
1228
1328
1428
1528
1628
1728
1828
1929
2029
2129
2229
2329
2429
2529
2629
2729
2829
2929
3029
3129

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the muggy band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 60% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
13112236281
23102236271
33102237271
43102237261
53102238261
63102238251
74112238251
84112238241
94112238241
104112238231
115122237231
125122238220
135132238220
145132238210
156132238200
166142239190
176142240180
186142241180
196142142170
205142143160
215142144160
225142045150
235142045150
245142146140
255142146140
265142146130
275142246130
286142245120
297152344110
308152343110
319152442100

Wind in August

Winds average 6 mph in August, the calmest month.

Across August, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 06 min at the start of August to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over August. Sunrise moves from 5:24 AM to 5:51 AM, and sunset from 7:27 PM to 6:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:247:27
214.05:257:26
314.05:267:25
414.05:267:24
513.95:277:23
613.95:287:22
713.95:297:21
813.85:307:19
913.85:317:18
1013.85:327:17
1113.75:337:16
1213.75:347:14
1313.65:357:13
1413.65:367:12
1513.65:377:11
1613.55:377:09
1713.55:387:08
1813.55:397:07
1913.45:407:05
2013.45:417:04
2113.35:427:02
2213.35:437:01
2313.35:446:59
2413.25:456:58
2513.25:466:56
2613.15:476:55
2713.15:486:53
2813.15:496:52
2913.05:506:50
3013.05:506:49
3112.95:516:47

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.85 kWh/m².

For context, solar energy here swings from a low near 2.05 kWh/m² to a high of 6.56 kWh/m² in July across the year — August's 5.85 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.0Intense
86.0Intense
96.0Intense
106.0Bright
116.0Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.7Bright
245.7Bright
255.7Bright
265.6Bright
275.6Bright
285.6Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in August

Is August a good time to visit Olathe?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.2
Sightseeing
6th-best month of the year
7.2
Beach & pool
1st-best month of the year

August is a reasonable time to visit Olathe for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Olathe in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Olathe sees daytime highs around 86°F and nights near 68°F. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Olathe in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Olathe peaks around June 22 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 22UV 10Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May7High
Jun10Very high
Jul10Very high
Aug9Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Olathe in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Olathe is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (October, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1716 µg/m³Oct 237 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar12Good
Apr11Good
May12Good
Jun14Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov7Good
Dec8Good
Location & terrain

Where is Olathe?

Olathe sits at 38.9°N, 94.8°W, 1,033 ft above sea level, in United States. The nearest listed city is Lenexa, 6.8 mi away.

Topography around Olathe

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Olathe.

Within 2 miles, the terrain around Olathe has only modest variations in elevation — a maximum elevation change of 171 ft around an average of 1,037 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 381 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 541 ft.

The land around Olathe is covered by trees (44%) and artificial surfaces (35%) within 2 miles, trees (41%) and grassland (30%) within 10 miles, and trees (34%), grassland (34%) and cropland (28%) within 50 miles.

2 miles
171 ft
10 miles
381 ft
50 miles
541 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Lenexa 6.8 mi · Gardner 7.5 mi · Overland Park 11 mi · Shawnee 12 mi · Leawood 12 mi · Prairie Village 12 mi · Grandview 16 mi · Belton 16 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Olathe (38.8814°, -94.8191°, elevation 1,033 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).