Ottawa weather in June

In June, Ottawa sees average daytime highs of 80°F and overnight lows near 62°F, with 4.4 in of rain across 11.7 wet days and about 14.9 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 77°F in the first days to 82°F by the end. The sky is clear or mostly clear about 32% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 48 min at the start of June to 15 hours by month's end. Set against the rest of the year, June is Ottawa's 5th-clearest and 10th-windiest month. For the whole year in context, see Ottawa's year-round climate.

Daytime high
80°
3rd warmest
Overnight low
62°
10th coldest
Rainfall
4.4 in
11.7 wet days
Daylight
15 hours
4:27 AM – 7:25 PM
Cloud cover
59%
5th clearest
Wind
7 mph
10th windiest
Solar energy
6.31 kWh/m²
Travel score
6.2
out of 10

Ottawa is city in Illinois, United States.

Density
553/km²
people per km²
Founded
1853

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 77°F in the first days to 82°F by the end.

A typical June day in Ottawa reaches about 80°F in the afternoon and slips back to 62°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 89°F. Set against its neighbours, June runs about 9°F warmer than May and about 3°F cooler than July.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17658
27758
37758
47759
57859
67860
77860
87960
97960
107961
118061
128062
138062
148062
158162
168163
178163
188163
198163
208264
218264
228264
238264
248264
258264
268264
278265
288265
298265
308365

How June really feels in Ottawa

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.

Ottawa weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan32° / 18°2.28.25.49.40.0
Feb37° / 21°2.07.24.210.30.0
Mar49° / 31°2.89.92.411.71.9
Apr61° / 41°4.311.90.613.14.8
May71° / 52°4.713014.36.1
Jun80° / 62°4.411.7014.96.2
Jul83° / 66°3.811.3014.75.7
Aug82° / 64°3.59.7013.76.6
Sep76° / 56°3.18.4012.37.1
Oct63° / 44°3.190.110.95.7
Nov49° / 33°2.78.61.19.72.1
Dec37° / 23°2.28.13.79.10.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 16% of June, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24555
34654
44555
54555
64555
74555
84654
94654
104654
114555
124654
134654
144654
154654
164654
174654
184753
194753
204951
215050
225050
235248
245347
255347
265347
275545
285545
295644
305644

Chance of precipitation in June

Any precipitation

Ottawa gets around 4.4 in of rain over 11.7 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 39% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
141
241
340
440
540
640
740
840
940
1040
1140
1240
1340
1440
1540
1640
1740
1840
1939
2039
2139
2238
2338
2438
2538
2638
2738
2838
2937
3037

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 26% of days. Sticky, muggy-or-worse air turns up on roughly 30% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1482018141
2472118141
3452118151
4442118161
5422119171
6402219172
7392219182
8372220183
9352220193
10342221204
11322221214
12302222225
13282222235
14262223246
15242223256
16232123267
17222123277
18202124278
19192124288
20182124289
21172124289
221622232910
231522232911
241522232911
251422232912
261422232912
271322232913
281321232914
291221232914
301221232915

Wind in June

Winds average 7 mph in June.

Across June, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
177light breeze
187light breeze
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 48 min at the start of June to 15 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:30 AM to 4:30 AM, and sunset from 7:16 PM to 7:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.84:307:16
214.84:307:16
314.84:297:17
414.84:297:18
514.84:297:19
614.94:287:19
714.94:287:20
814.94:287:20
914.94:277:21
1014.94:277:22
1114.94:277:22
1214.94:277:23
1314.94:277:23
1415.04:277:24
1515.04:277:24
1615.04:277:25
1715.04:277:25
1815.04:277:25
1915.04:277:26
2015.04:277:26
2115.04:277:26
2215.04:277:27
2315.04:277:27
2415.04:287:27
2515.04:287:27
2615.04:287:27
2715.04:297:27
2815.04:297:27
2915.04:297:27
3015.04:307:27

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.31 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.72 kWh/m² to a high of 6.31 kWh/m² in June across the year — June's 6.31 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.1Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.4Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
236.4Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
Planning a trip in June

Is June a good time to visit Ottawa?

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

6.2
Sightseeing
3rd-best month of the year
6.3
Beach & pool
3rd-best month of the year

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

What to pack for Ottawa in June

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

In June, Ottawa sees daytime highs around 80°F and nights near 62°F. Pack sun protection. Worth having: light clothes and rain gear. About 12 days see rain.

sun protectionlight clothesrain gear

UV index in Ottawa 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 Ottawa peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJun 20UV 9Dec 19UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Ottawa 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 Ottawa is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJul 1917 µg/m³Oct 229 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb14Moderate
Mar14Moderate
Apr13Moderate
May14Moderate
Jun15Moderate
Jul17Moderate
Aug16Moderate
Sep12Moderate
Oct9Good
Nov9Good
Dec10Good
Location & terrain

Where is Ottawa?

Ottawa sits at 41.3°N, 88.8°W, 482 ft above sea level, in United States. The nearest listed city is Yorkville, 29 mi away.

Topography around Ottawa

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

Within 2 miles, the terrain around Ottawa has only modest variations in elevation — a maximum elevation change of 295 ft around an average of 531 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 417 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 692 ft.

The land around Ottawa is covered by trees (36%) and artificial surfaces (24%) within 2 miles, cropland (69%) within 10 miles, and cropland (78%) within 50 miles.

2 miles
295 ft
10 miles
417 ft
50 miles
692 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Yorkville 29 mi · Oswego 34 mi · Shorewood 35 mi · Montgomery 37 mi · Plainfield 39 mi · Aurora 39 mi · DeKalb 40 mi · Crest Hill 41 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 Ottawa (41.3456°, -88.8426°, elevation 482 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).