Issaquah weather in June

In June, Issaquah sees average daytime highs of 67°F and overnight lows near 50°F, with 3.2 in of rain across 11.4 wet days and about 15.7 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 65°F in the first days to 70°F by the end. The sky is clear or mostly clear about 21% of the time in June, and the air most often feels dry.

Daylight stretches from about 15 h 30 min at the start of June to 15 h 42 min by month's end. Set against the rest of the year, June is Issaquah's 5th-clearest and 9th-windiest month. For the whole year in context, see Issaquah's year-round climate.

Daytime high
67°
4th warmest
Overnight low
50°
10th coldest
Rainfall
3.2 in
11.4 wet days
Daylight
15 h 42 min
4:16 AM – 8:01 PM
Cloud cover
65%
5th clearest
Wind
4 mph
9th windiest
Solar energy
5.55 kWh/m²
Travel score
5.9
out of 10

Issaquah is city in King County, Washington, United States.

Density
1,222/km²
people per km²
Founded
1892

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 65°F in the first days to 70°F by the end.

A typical June day in Issaquah reaches about 67°F in the afternoon and slips back to 50°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 59°F and 78°F. Set against its neighbours, June runs about 4°F warmer than May and about 6°F cooler than July.

40°50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
16549
26549
36549
46549
56549
66549
76549
86549
96549
106649
116650
126650
136650
146650
156650
166750
176750
186751
196751
206851
216851
226851
236951
246951
256952
266952
277052
287052
297052
307152

How June really feels in Issaquah

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.

Issaquah weather by month

How June compares with the rest of the year at a glance. June is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan45° / 35°8.318.73.68.70.8
Feb48° / 36°5.815.52.69.91.5
Mar52° / 37°6.518.71.811.62.2
Apr57° / 41°5.416.50.213.33.4
May63° / 46°3.812.8014.95.1
Jun67° / 50°3.211.4015.75.9
Jul74° / 54°1.36.5015.47.7
Aug74° / 54°1.65.7014.17.9
Sep68° / 49°3.49012.46.6
Oct58° / 43°6.615.1010.63.9
Nov49° / 38°9.018.719.11.6
Dec44° / 35°8.118.43.48.30.6

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 14% of June, with mostly cloudy or overcast conditions the remaining 65%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13268
23268
33169
43070
53070
63070
72971
83070
93070
103070
113169
123169
133169
143268
153268
163367
173466
183565
193664
203862
213862
223961
234060
244159
254159
264357
274456
284456
294456
304555

Chance of precipitation in June

Any precipitation

Issaquah gets around 3.2 in of rain over 11.4 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 38% and peaks near 42% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
138
238
339
439
540
640
741
841
941
1042
1142
1242
1341
1441
1540
1640
1739
1838
1938
2037
2136
2236
2335
2434
2534
2633
2733
2832
2932
3031

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 88% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19550
29550
39550
49550
59550
69550
79550
89550
99550
109550
119460
129460
139370
149370
159280
169190
1790100
1888111
1987121
2086131
2184151
2283161
2382171
2481181
2580182
2679192
2778202
2878202
2977212
3076222

Wind in June

Winds average 4 mph in June.

Across June, daily wind ranges from about 4 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 15 h 30 min at the start of June to 15 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 4:22 AM to 4:19 AM, and sunset from 7:50 PM to 8:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
115.54:227:50
215.54:217:51
315.54:207:51
415.54:207:52
515.64:197:53
615.64:197:54
715.64:187:55
815.64:187:56
915.64:187:56
1015.74:177:57
1115.74:177:58
1215.74:177:58
1315.74:177:59
1415.74:168:00
1515.74:168:00
1615.74:168:01
1715.74:168:01
1815.84:168:01
1915.84:168:02
2015.84:168:02
2115.84:168:02
2215.84:178:03
2315.84:178:03
2415.84:178:03
2515.84:178:03
2615.84:188:03
2715.84:188:03
2815.74:188:03
2915.74:198:03
3015.74:198:03

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.55 kWh/m².

For context, solar energy here swings from a low near 0.9 kWh/m² to a high of 6.18 kWh/m² in July across the year — June's 5.55 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.5Bright
175.5Bright
185.5Bright
195.6Bright
205.6Bright
215.7Bright
225.7Bright
235.7Bright
245.8Bright
255.8Bright
265.8Bright
275.9Bright
285.9Bright
295.9Bright
306.0Bright
Planning a trip in June

Hazard calendar for Issaquah

In seasonPeak

None of Issaquah's seasonal hazards are active in June. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Issaquah's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is June a good time to visit Issaquah?

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

5.9
Sightseeing
4th-best month of the year
2.9
Beach & pool
4th-best month of the year

June is a reasonable time to visit Issaquah for sightseeing.

What to pack for Issaquah in June

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

In June, Issaquah sees daytime highs around 67°F and nights near 50°F. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

UV index in Issaquah in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Issaquah peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 17 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 8Dec 17UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar4Moderate
Apr5Moderate
May7High
Jun6High
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Issaquah 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 Issaquah is worst in September — around 22 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodSep 1322 µg/m³Dec 177 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar12Moderate
Apr12Good
May11Good
Jun10Good
Jul10Good
Aug18Moderate
Sep22Moderate
Oct12Good
Nov8Good
Dec7Good
Location & terrain

Where is Issaquah?

Issaquah sits at 47.5°N, 122.0°W, 108 ft above sea level, in United States. The nearest listed city is West Lake Sammamish, 4.3 mi away.

Topography around Issaquah

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

Within 2 miles, the terrain around Issaquah has large variations in elevation — a maximum elevation change of 1,998 ft around an average of 512 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,002 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 14,413 ft.

The land around Issaquah is covered by trees (78%) within 2 miles, trees (77%) within 10 miles, and trees (76%) within 50 miles.

2 miles
1,998 ft
10 miles
3,002 ft
50 miles
14,413 ft
treesgrasslandartificial surfacesbare terrainwater
June weather nearby: West Lake Sammamish 4.3 mi · City of Sammamish 5.0 mi · Sammamish 8.1 mi · Fairwood 8.1 mi · Renton 9.3 mi · Mercer Island 9.3 mi · Maple Valley 9.3 mi · Bellevue 9.3 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 Issaquah (47.5301°, -122.0326°, elevation 108 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).