Windsor weather in June

In June, Windsor sees average daytime highs of 80°F and overnight lows near 55°F, with 0.3 in of rain across 1.2 wet days and about 14.6 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 77°F in the first days to 83°F by the end. The sky is clear or mostly clear about 78% of the time in June, and the air most often feels dry.

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 Windsor's 4th-clearest and 3rd-windiest month. For the whole year in context, see Windsor's year-round climate.

Daytime high
80°
4th warmest
Overnight low
55°
10th coldest
Rainfall
0.3 in
1.2 wet days
Daylight
14 h 42 min
4:51 AM – 7:32 PM
Cloud cover
22%
4th clearest
Wind
5 mph
3rd windiest
Solar energy
8.01 kWh/m²
Travel score
8.5
out of 10

Windsor is town in Sonoma County, California, United States.

Density
1,454/km²
people per km²
Founded
1992

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 83°F by the end.

A typical June day in Windsor reaches about 80°F in the afternoon and slips back to 55°F overnight — a 25°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 91°F. Set against its neighbours, June runs about 7°F warmer than May and about 3°F cooler than July.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17653
27753
37753
47754
57854
67854
77854
87854
97954
107955
117955
128055
138055
148055
158055
168155
178156
188156
198156
208256
218256
228256
238256
248256
258256
268357
278357
288357
298357
308357

Windsor weather by month

How June compares with the rest of the year at a glance. June is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan57° / 40°5.710.39.64.0
Feb60° / 42°5.89.310.54.7
Mar63° / 44°4.49.511.75.7
Apr67° / 46°1.95.6137.0
May73° / 51°1.13.614.18.2
Jun80° / 55°0.31.214.68.5
Jul83° / 57°0.00.114.47.8
Aug83° / 57°0.00.213.57.8
Sep81° / 55°0.10.612.38.6
Oct74° / 50°1.43.2118.5
Nov63° / 44°3.06.29.96.2
Dec56° / 39°5.910.19.43.9

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 78% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 7% of June, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17723
27723
37723
47822
57921
68020
78020
88119
98119
108218
118317
128317
138515
148515
158614
168614
178713
188713
198713
208812
218812
228812
239010
249010
259010
269010
27919
28919
29928
30937

Chance of precipitation in June

Any precipitation

Windsor gets around 0.3 in of rain over 1.2 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 4% and peaks near 7% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
17
26
36
46
56
66
75
85
95
105
115
124
134
144
154
164
173
183
193
203
213
223
233
243
252
262
272
282
292
302

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 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19190
29190
39190
49190
59190
69190
79280
89280
99280
109280
119370
129370
139370
149370
159280
169280
179280
189190
199190
2090100
2189110
2289110
2388120
2487130
2585141
2685141
2784151
2884151
2984151
3084151

Wind in June

Winds average 5 mph in June.

Across June, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

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 4:54 AM to 4:54 AM, and sunset from 7:23 PM to 7:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:547:23
214.54:547:24
314.54:537:25
414.54:537:25
514.64:537:26
614.64:527:27
714.64:527:27
814.64:527:28
914.64:527:28
1014.64:527:29
1114.64:527:30
1214.64:517:30
1314.74:517:30
1414.74:517:31
1514.74:517:31
1614.74:517:32
1714.74:517:32
1814.74:517:32
1914.74:517:33
2014.74:527:33
2114.74:527:33
2214.74:527:34
2314.74:527:34
2414.74:527:34
2514.74:537:34
2614.74:537:34
2714.74:537:34
2814.74:547:34
2914.74:547:34
3014.74:547:34

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 8.01 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.08 kWh/m² to a high of 8.01 kWh/m² in June across the year — June's 8.01 kWh/m² sits near the top of that range.

02468151015202530
Solar energy (kWh/m²)Level
17.7Intense
27.7Intense
37.7Intense
47.8Intense
57.8Intense
67.8Intense
77.9Intense
87.9Intense
97.9Intense
108.0Intense
118.0Intense
128.0Intense
138.0Intense
148.1Intense
158.1Intense
168.1Intense
178.1Intense
188.1Intense
198.1Intense
208.1Intense
218.1Intense
228.1Intense
238.1Intense
248.1Intense
258.1Intense
268.1Intense
278.1Intense
288.1Intense
298.1Intense
308.1Intense
Planning a trip in June

Hazard calendar for Windsor

In seasonPeak

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

Windsor's rainy season runs November–March, 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 Windsor?

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

8.5
Sightseeing
2nd-best month of the year
8.5
Beach & pool
4th-best month of the year

June is one of the better times to visit Windsor for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Windsor in June

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

In June, Windsor sees daytime highs around 80°F and nights near 55°F. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

Sea temperature near Windsor in June

The nearest coast averages about 51°F in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 21 mi away) is warmest in September at about 55°F and coldest in May near 51°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

50°52°54°56°JanFebMarAprMayJunJulAugSepOctNovDecbracing
Sea temperature (°F)Comfort
Jan53Bracing
Feb53Bracing
Mar53Bracing
Apr51Bracing
May51Bracing
Jun51Bracing
Jul53Bracing
Aug54Bracing
Sep55Bracing
Oct55Bracing
Nov54Bracing
Dec53Bracing

UV index in Windsor in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Windsor peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 10Dec 17UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr6High
May9Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Low

Air quality in Windsor 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 Windsor is worst in September — around 24 µg/m³ PM2.5 (moderate), about 4.1× the cleanest month (June, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1623 µg/m³Jun 116 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar9Good
Apr7Good
May7Good
Jun6Good
Jul9Good
Aug17Moderate
Sep24Moderate
Oct16Moderate
Nov9Good
Dec7Good
Location & terrain

Where is Windsor?

Windsor sits at 38.5°N, 122.8°W, 118 ft above sea level, in United States. The nearest listed city is Santa Rosa, 9.3 mi away.

Topography around Windsor

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

Within 2 miles, the terrain around Windsor has only modest variations in elevation — a maximum elevation change of 476 ft around an average of 144 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 1,969 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,266 ft.

The land around Windsor is covered by trees (35%), artificial surfaces (28%) and grassland (26%) within 2 miles, trees (57%) and grassland (27%) within 10 miles, and trees (42%), grassland (27%) and water (24%) within 50 miles.

2 miles
476 ft
10 miles
1,969 ft
50 miles
6,266 ft
treesgrasslandcroplandartificial surfaceswater
June weather nearby: Santa Rosa 9.3 mi · Rohnert Park 16 mi · Agua Caliente 24 mi · Petaluma 24 mi · Clearlake 30 mi · Novato 33 mi · Napa 34 mi · American Canyon 40 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 Windsor (38.5471°, -122.8164°, elevation 118 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).