Oakville weather in June

In June, Oakville sees average daytime highs of 84°F and overnight lows near 67°F, with 4.1 in of rain across 11 wet days and about 14.6 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 81°F in the first days to 87°F by the end. The sky is clear or mostly clear about 34% of the time in June, and the air most often feels muggy.

Daylight stretches from about 14 h 30 min at the start of June to 14 h 42 min by month's end. Set against the rest of the year, June is Oakville's 5th-clearest and 9th-windiest month. For the whole year in context, see Oakville's year-round climate.

Daytime high
84°
3rd warmest
Overnight low
67°
10th coldest
Rainfall
4.1 in
11 wet days
Daylight
14 h 42 min
4:41 AM – 7:21 PM
Cloud cover
55%
5th clearest
Wind
6 mph
9th windiest
Solar energy
6.45 kWh/m²
Travel score
5.3
out of 10

Oakville is census-designated place in St. Louis County, Missouri.

Density
787/km²
people per km²

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 81°F in the first days to 87°F by the end.

A typical June day in Oakville reaches about 84°F in the afternoon and slips back to 67°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 76°F and 92°F. Set against its neighbours, June runs about 9°F warmer than May and about 3°F cooler than July.

50°60°70°80°90°151015202530
Avg high (°F)Avg low (°F)
18164
28164
38164
48265
58265
68265
78365
88366
98366
108366
118467
128467
138467
148567
158568
168568
178568
188568
198668
208669
218669
228669
238669
248669
258669
268769
278769
288770
298770
308770

How June really feels in Oakville

Once humidity and wind are folded in, June 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

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

Oakville weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan40° / 25°2.98.32.89.60.0
Feb45° / 28°2.57.52.710.51.0
Mar56° / 37°3.810.71.211.73.7
Apr67° / 48°4.711.30.2135.9
May76° / 58°5.013.3014.16.3
Jun84° / 67°4.111014.65.3
Jul88° / 71°3.410014.44.6
Aug86° / 68°2.99.3013.55.1
Sep80° / 60°3.27.7012.37.0
Oct68° / 48°3.58.20116.7
Nov55° / 38°3.78.60.79.93.6
Dec44° / 29°2.78.32.29.40.8

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 20% of June, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24753
34852
44852
55050
65050
75149
85149
95248
105248
115347
125347
135446
145446
155545
165545
175644
185545
195644
205743
215743
225743
235743
245743
255743
265743
275743
285842
295842
305842

Chance of precipitation in June

Any precipitation

Oakville gets around 4.1 in of rain over 11 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
138
238
337
437
537
637
737
837
937
1038
1138
1238
1338
1439
1539
1639
1739
1838
1938
2038
2137
2237
2337
2437
2537
2636
2736
2836
2936
3036

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the muggy band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 50% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1261922294
2252022294
3232022305
4222122305
5212121316
6202122317
7182022328
8172022338
9161922339
101518233411
111417233412
121316233513
131215233514
141114243615
151014243616
161013233617
17912233718
18912233719
19912233720
20812233721
21812233621
22812233622
23712223622
24712223523
25712223524
26713223425
27613223426
28613213326
29613213327
30513213228

Wind in June

Winds average 6 mph in June.

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

0246810151015202530
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

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 30 min at the start of June to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:44 AM to 4:45 AM, and sunset from 7:13 PM to 7:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:447:13
214.54:447:14
314.54:447:14
414.54:437:15
514.54:437:16
614.64:437:16
714.64:427:17
814.64:427:18
914.64:427:18
1014.64:427:19
1114.64:427:19
1214.64:427:20
1314.64:417:20
1414.74:417:21
1514.74:417:21
1614.74:417:21
1714.74:417:22
1814.74:427:22
1914.74:427:23
2014.74:427:23
2114.74:427:23
2214.74:427:23
2314.74:427:24
2414.74:437:24
2514.74:437:24
2614.74:437:24
2714.74:437:24
2814.74:447:24
2914.74:447:24
3014.74:457:24

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.45 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.92 kWh/m² to a high of 6.45 kWh/m² in June across the year — June's 6.45 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.4Intense
136.4Intense
146.4Intense
156.5Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
Planning a trip in June

Hazard calendar for Oakville

In seasonPeak

In June, Oakville sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Oakville sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is June a good time to visit Oakville?

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

5.3
Sightseeing
5th-best month of the year
6.6
Beach & pool
4th-best month of the year

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

What to pack for Oakville in June

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

In June, Oakville sees daytime highs around 84°F and nights near 67°F. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Oakville in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 Oakville peaks around June 22 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 22UV 9Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5High
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Oakville in June

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Oakville is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1418 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb12Good
Mar12Good
Apr11Good
May14Moderate
Jun16Moderate
Jul18Moderate
Aug15Moderate
Sep12Moderate
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Oakville?

Oakville sits at 38.5°N, 90.3°W, 600 ft above sea level, in United States. The nearest listed city is Mehlville, 3.1 mi away.

Topography around Oakville

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

Within 2 miles, the terrain around Oakville has only modest variations in elevation — a maximum elevation change of 433 ft around an average of 502 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 692 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,322 ft.

The land around Oakville is covered by trees (51%) and artificial surfaces (21%) within 2 miles, trees (45%) and cropland (23%) within 10 miles, and trees (51%) and cropland (33%) within 50 miles.

2 miles
433 ft
10 miles
692 ft
50 miles
1,322 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Mehlville 3.1 mi · Lemay 4.3 mi · Arnold 5.0 mi · Concord 5.0 mi · Affton 5.6 mi · Webster Groves 8.7 mi · Kirkwood 9.3 mi · Clayton 12 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 Oakville (38.4701°, -90.3046°, elevation 600 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).