Sammamish weather in June

In June, Sammamish sees average daytime highs of 67°F and overnight lows near 51°F, with 3.5 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 Sammamish's 4th-clearest and 9th-windiest month. For the whole year in context, see Sammamish's year-round climate.

Daytime high
67°
4th warmest
Overnight low
51°
10th coldest
Rainfall
3.5 in
11.4 wet days
Daylight
15 h 48 min
4:16 AM – 8:01 PM
Cloud cover
65%
4th clearest
Wind
4 mph
9th windiest
Solar energy
5.53 kWh/m²
Travel score
5.9
out of 10

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

Density
1,092/km²
people per km²
Founded
1999

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 Sammamish reaches about 67°F in the afternoon and slips back to 51°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 59°F and 77°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
66550
76550
86550
96650
106650
116650
126650
136650
146650
156650
166751
176751
186751
196751
206851
216851
226851
236952
246952
256952
266952
277052
287052
297053
307053

How June really feels in Sammamish

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.

Sammamish 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° / 36°9.01948.70.8
Feb48° / 36°6.115.52.99.91.5
Mar52° / 38°7.119.12.311.62.2
Apr57° / 41°5.916.70.313.33.4
May63° / 46°4.113.2014.95.1
Jun67° / 51°3.511.4015.75.9
Jul73° / 54°1.66.3015.47.6
Aug74° / 54°1.85.7014.17.8
Sep68° / 49°3.79.2012.46.5
Oct58° / 43°7.415.3010.63.8
Nov49° / 38°9.919.10.99.11.6
Dec44° / 35°8.718.73.98.30.6

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 15% of June, with mostly cloudy or overcast conditions the remaining 64%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13268
23268
33169
43169
53169
63169
73070
83169
93169
103169
113169
123268
133367
143367
153466
163466
173664
183664
193763
203862
214060
224159
234159
244258
254357
264456
274555
284654
294654
304753

Chance of precipitation in June

Any precipitation

Sammamish gets around 3.5 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
239
339
439
540
640
741
841
942
1042
1142
1242
1342
1441
1541
1640
1740
1839
1938
2037
2137
2236
2335
2434
2534
2633
2732
2832
2931
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 86% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19460
29460
39460
49460
59460
69460
79370
89370
99370
109370
119370
129280
139280
149190
159091
1689101
1788111
1887121
1986131
2085141
2183161
2281172
2380182
2479192
2578202
2677212
2776222
2874233
2973243
3072253

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 4:21 AM to 4:19 AM, and sunset from 7:50 PM to 8:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
115.54:217:50
215.54:217:51
315.54:207:52
415.64:207:53
515.64:197:54
615.64:197:55
715.64:187:56
815.64:187:56
915.74:177:57
1015.74:177:58
1115.74:177:58
1215.74:167:59
1315.74:168:00
1415.74:168:00
1515.74:168:01
1615.84:168:01
1715.84:168:02
1815.84:168:02
1915.84:168:03
2015.84:168:03
2115.84:168:03
2215.84:168:03
2315.84:168:04
2415.84:178:04
2515.84:178:04
2615.84:178:04
2715.84:188:04
2815.84:188:04
2915.84:198:04
3015.74:198:04

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.53 kWh/m².

For context, solar energy here swings from a low near 0.86 kWh/m² to a high of 6.13 kWh/m² in July across the year — June's 5.53 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
115.3Bright
125.3Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.5Bright
185.5Bright
195.5Bright
205.6Bright
215.6Bright
225.7Bright
235.7Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.9Bright
295.9Bright
305.9Bright
Planning a trip in June

Hazard calendar for Sammamish

In seasonPeak

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

Sammamish'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 Sammamish?

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 Sammamish for sightseeing.

What to pack for Sammamish in June

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

In June, Sammamish sees daytime highs around 67°F and nights near 51°F. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

UV index in Sammamish 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 Sammamish 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 Sammamish 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 Sammamish is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodModerateGoodAug 2119 µg/m³Dec 157 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar12Moderate
Apr12Good
May13Moderate
Jun11Good
Jul10Good
Aug20Moderate
Sep18Moderate
Oct11Good
Nov7Good
Dec6Good
Location & terrain

Where is Sammamish?

Sammamish sits at 47.6°N, 122.1°W, 59 ft above sea level, in United States. The nearest listed city is Redmond, 3.1 mi away.

Topography around Sammamish

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

Within 2 miles, the terrain around Sammamish has only modest variations in elevation — a maximum elevation change of 597 ft around an average of 217 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,503 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,799 ft.

The land around Sammamish is covered by trees (61%) and water (20%) within 2 miles, trees (69%) within 10 miles, and trees (75%) within 50 miles.

2 miles
597 ft
10 miles
2,503 ft
50 miles
7,799 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Redmond 3.1 mi · City of Sammamish 3.1 mi · Union Hill-Novelty Hill 3.7 mi · West Lake Sammamish 4.3 mi · Bellevue 6.2 mi · Kirkland 6.8 mi · Cottage Lake 6.8 mi · Issaquah 8.1 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 Sammamish (47.6418°, -122.0804°, elevation 59 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).