Gilroy weather in July

In July, Gilroy sees average daytime highs of 79°F and overnight lows near 57°F, with 0.0 in of rain across 0.2 wet days and about 14.3 hours of daylight. It is the 2nd-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 79°F through the month. The sky is clear or mostly clear about 90% of the time in July, and the air most often feels dry.

Daylight stretches from about 14 h 30 min at the start of July to 13 h 54 min by month's end. Set against the rest of the year, July is Gilroy's 2nd-clearest and 4th-windiest month. For the whole year in context, see Gilroy's year-round climate.

Daytime high
79°
2nd warmest
Overnight low
57°
11th coldest
Rainfall
0.0 in
0.2 wet days
Daylight
14 h 18 min
5:03 AM – 7:21 PM
Cloud cover
12%
2nd clearest
Wind
4 mph
4th windiest
Solar energy
7.92 kWh/m²
Travel score
9.2
out of 10

Gilroy is city in Santa Clara County, California, United States.

Density
1,272/km²
people per km²
Founded
1870

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 79°F through the month.

A typical July day in Gilroy reaches about 79°F in the afternoon and slips back to 57°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 72°F and 86°F. Set against its neighbours, July runs about 3°F warmer than June and on par with August.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
17855
27856
37856
47856
57856
67856
77856
87856
97856
107856
117856
127956
137957
147957
157957
167957
177957
187957
197957
207957
217957
227957
237957
247957
257957
267957
277957
287957
297957
307957
317957

Gilroy weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan58° / 41°3.48.39.74.6
Feb60° / 43°3.48.510.65.0
Mar63° / 45°2.5811.76.0
Apr66° / 47°1.14.612.97.1
May70° / 50°0.52.8148.1
Jun75° / 53°0.10.614.59.2
Jul79° / 57°0.00.214.39.2
Aug79° / 57°0.00.113.49.2
Sep78° / 56°0.10.412.39.2
Oct73° / 51°0.71.9118.7
Nov64° / 45°1.44.7106.7
Dec58° / 40°3.07.79.54.6

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 90% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 5% of July, with mostly cloudy or overcast conditions the remaining 6%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1937
2946
3946
4955
5955
6964
7964
8964
9964
10964
11955
12955
13955
14955
15955
16955
17955
18946
19946
20937
21937
22937
23937
24937
25946
26946
27946
28946
29946
30955
31955

Chance of precipitation in July

Any precipitation

Gilroy gets around 0.0 in of rain over 0.2 wet days in July, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 1% and peaks near 1% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
11
21
31
41
51
61
70
80
90
100
110
120
130
140
150
161
171
181
191
201
211
221
231
241
251
261
271
281
291
301
311

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the dry band about 67% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
178211
277221
377221
476231
576231
675241
774251
873261
972271
1072271
1171281
1270291
1369301
1467312
1566322
1665332
1764342
1863352
1962362
2062362
2161372
2261372
2361372
2461372
2561372
2661372
2761372
2861372
2961372
3059383
3159383

Wind in July

Winds average 4 mph in July.

Across July, 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.

0246810151015202531
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
314calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 30 min at the start of July to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:54 AM to 5:14 AM, and sunset from 7:25 PM to 7:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:547:25
214.54:557:25
314.54:557:25
414.54:567:25
514.54:567:25
614.54:577:24
714.54:577:24
814.44:587:24
914.44:587:24
1014.44:597:23
1114.44:597:23
1214.45:007:23
1314.45:017:22
1414.35:017:22
1514.35:027:22
1614.35:037:21
1714.35:037:21
1814.35:047:20
1914.25:057:20
2014.25:057:19
2114.25:067:18
2214.25:077:18
2314.25:087:17
2414.15:087:16
2514.15:097:16
2614.15:107:15
2714.15:117:14
2814.05:127:13
2914.05:127:12
3014.05:137:12
3113.95:147:11

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 7.92 kWh/m².

For context, solar energy here swings from a low near 2.4 kWh/m² to a high of 7.96 kWh/m² in June across the year — July's 7.92 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
18.1Intense
28.1Intense
38.1Intense
48.1Intense
58.1Intense
68.1Intense
78.0Intense
88.0Intense
98.0Intense
108.0Intense
118.0Intense
128.0Intense
138.0Intense
148.0Intense
157.9Intense
167.9Intense
177.9Intense
187.9Intense
197.9Intense
207.8Intense
217.8Intense
227.8Intense
237.8Intense
247.8Intense
257.8Intense
267.7Intense
277.7Intense
287.7Intense
297.7Intense
307.7Intense
317.6Intense
Planning a trip in July

Is July a good time to visit Gilroy?

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

9.2
Sightseeing
1st-best month of the year
8.6
Beach & pool
2nd-best month of the year

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

What to pack for Gilroy in July

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

In July, Gilroy sees daytime highs around 79°F and nights near 57°F. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

Sea temperature near Gilroy in July

The nearest coast averages about 57°F in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 19 mi away) is warmest in September at about 58°F and coldest in April near 54°F.

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

52°54°56°58°60°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°F)Comfort
Jan55Bracing
Feb55Bracing
Mar55Bracing
Apr54Bracing
May54Bracing
Jun55Bracing
Jul57Bracing
Aug58Bracing
Sep58Bracing
Oct58Bracing
Nov56Bracing
Dec55Bracing

UV index in Gilroy in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Gilroy peaks around June 22 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 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 22UV 10Dec 14UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar4Moderate
Apr7High
May8Very high
Jun11Extreme
Jul10Extreme
Aug10Very high
Sep7High
Oct5High
Nov2Moderate
Dec2Moderate

Air quality in Gilroy in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Gilroy is worst in August — around 22 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (June, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1920 µg/m³Jun 135 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar8Good
Apr7Good
May6Good
Jun5Good
Jul8Good
Aug22Moderate
Sep15Moderate
Oct12Moderate
Nov8Good
Dec7Good
Location & terrain

Where is Gilroy?

Gilroy sits at 37.0°N, 121.6°W, 200 ft above sea level, in United States. The nearest listed city is Morgan Hill, 9.9 mi away.

Topography around Gilroy

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

Within 2 miles, the terrain around Gilroy has only modest variations in elevation — a maximum elevation change of 640 ft around an average of 217 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,871 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,161 ft.

The land around Gilroy is covered by artificial surfaces (49%) and cropland (25%) within 2 miles, trees (38%) and grassland (36%) within 10 miles, and grassland (39%) and trees (27%) within 50 miles.

2 miles
640 ft
10 miles
2,871 ft
50 miles
5,161 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Morgan Hill 9.9 mi · Watsonville 12 mi · Hollister 14 mi · Prunedale 17 mi · Live Oak 23 mi · Salinas 23 mi · Santa Cruz 25 mi · Marina 25 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 Gilroy (37.0058°, -121.5683°, elevation 200 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).