Saint Joseph weather in August

In August, Saint Joseph sees average daytime highs of 85°F and overnight lows near 67°F, with 3.6 in of rain across 9 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 85°F through the month. The sky is clear or mostly clear about 45% 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 13 hours by month's end. Set against the rest of the year, August is Saint Joseph's 4th-clearest and 12th-windiest month. For the whole year in context, see Saint Joseph's year-round climate.

Daytime high
85°
2nd warmest
Overnight low
67°
11th coldest
Rainfall
3.6 in
9 wet days
Daylight
13 h 36 min
5:36 AM – 7:11 PM
Cloud cover
47%
4th clearest
Wind
7 mph
12th windiest
Solar energy
5.82 kWh/m²
Travel score
5.5
out of 10

Saint Joseph is city and seat of Buchanan County, State of Missouri, United States.

Density
662/km²
people per km²
Founded
1843

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 85°F through the month.

A typical August day in Saint Joseph reaches about 85°F in the afternoon and slips back to 67°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 76°F and 94°F. Set against its neighbours, August runs about 2°F cooler than July and about 7°F warmer than September.

60°80°100°151015202531
Avg high (°F)Avg low (°F)
18669
28668
38668
48668
58668
68668
78668
88668
98568
108567
118567
128567
138567
148567
158567
168567
178567
188567
198566
208566
218566
228566
238566
248566
258566
268465
278465
288465
298465
308365
318364

How August really feels in Saint Joseph

Once humidity and wind are folded in, August averages 0 days 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
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Saint Joseph weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 20°1.25.43.69.50.0
Feb41° / 23°1.76.13.110.40.3
Mar53° / 33°3.091.911.73.1
Apr64° / 44°4.511.10.6135.5
May74° / 55°5.612.50.114.26.4
Jun83° / 65°4.511.1014.85.7
Jul87° / 69°4.49.1014.55.0
Aug85° / 67°3.69013.65.5
Sep78° / 58°3.38.2012.37.2
Oct65° / 46°3.27.90.210.96.4
Nov52° / 34°2.16.51.19.83.0
Dec40° / 24°1.85.42.69.20.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% 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 38%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26337
36337
46337
56337
66238
76139
86139
96139
106139
116040
126040
135941
146040
156040
166040
176040
186139
196139
206139
216238
226238
236337
246337
256337
266436
276436
286535
296634
306634
316733

Chance of precipitation in August

Any precipitation

Saint Joseph gets around 3.6 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 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
530
629
729
829
929
1029
1129
1229
1329
1429
1528
1628
1728
1828
1928
2029
2129
2229
2329
2429
2528
2628
2728
2827
2927
3027
3127

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 36% of days. Sticky, muggy-or-worse air turns up on roughly 55% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
13142432252
23142432252
33132432252
44132432242
54132532242
64132532242
74132532232
85132532232
95132532231
106142532221
116142532221
126142532221
136142533211
147152532211
157152434201
167152434190
177152435190
187152336180
197162337180
207152238170
216152239170
226152240160
236152241160
246152242150
256152242140
267162242140
277162342130
288162341120
299162340120
3010162439110
3111172438100

Wind in August

Winds average 7 mph in August, the calmest month.

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

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 06 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over August. Sunrise moves from 5:22 AM to 5:51 AM, and sunset from 7:29 PM to 6:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:227:29
214.15:237:28
314.15:247:27
414.05:257:26
514.05:267:25
614.05:267:24
713.95:277:22
813.95:287:21
913.85:297:20
1013.85:307:19
1113.85:317:18
1213.75:327:16
1313.75:337:15
1413.75:347:14
1513.65:357:12
1613.65:367:11
1713.55:377:09
1813.55:387:08
1913.55:397:07
2013.45:407:05
2113.45:417:04
2213.35:427:02
2313.35:437:01
2413.35:446:59
2513.25:456:58
2613.25:466:56
2713.15:476:55
2813.15:486:53
2913.05:496:51
3013.05:506:50
3113.05:516:48

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.82 kWh/m².

For context, solar energy here swings from a low near 2.01 kWh/m² to a high of 6.56 kWh/m² in July across the year — August's 5.82 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
96.0Bright
106.0Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.6Bright
265.6Bright
275.6Bright
285.5Bright
295.5Bright
305.5Bright
315.4Bright
Planning a trip in August

Is August a good time to visit Saint Joseph?

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

5.5
Sightseeing
5th-best month of the year
7.3
Beach & pool
1st-best month of the year

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

What to pack for Saint Joseph in August

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

In August, Saint Joseph sees daytime highs around 85°F and nights near 67°F. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Saint Joseph in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Saint Joseph peaks around June 22 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 10Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May7High
Jun10Very high
Jul9Very high
Aug8Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Saint Joseph 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 Saint Joseph is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJul 1815 µg/m³Oct 227 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar12Moderate
Apr11Good
May12Good
Jun13Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov7Good
Dec9Good
Location & terrain

Where is Saint Joseph?

Saint Joseph sits at 39.8°N, 94.8°W, 886 ft above sea level, in United States. The nearest listed city is Leavenworth, 32 mi away.

Topography around Saint Joseph

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

Within 2 miles, the terrain around Saint Joseph has only modest variations in elevation — a maximum elevation change of 308 ft around an average of 909 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 397 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 640 ft.

The land around Saint Joseph is covered by trees (48%) and artificial surfaces (27%) within 2 miles, cropland (42%) and trees (33%) within 10 miles, and cropland (48%), grassland (26%) and trees (23%) within 50 miles.

2 miles
308 ft
10 miles
397 ft
50 miles
640 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Leavenworth 32 mi · Gladstone 42 mi · Liberty 43 mi · Kansas City 47 mi · Kansas City 48 mi · Shawnee 51 mi · Independence 52 mi · East Independence 53 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 Saint Joseph (39.7686°, -94.8466°, elevation 886 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).