San Jacinto weather in October

In October, San Jacinto sees average daytime highs of 77°F and overnight lows near 54°F, with 0.7 in of rain across 2.9 wet days and about 11.1 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 81°F in the first days to 73°F by the end. The sky is clear or mostly clear about 74% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of October to 10 h 42 min by month's end. Set against the rest of the year, October is San Jacinto's 5th-clearest and 9th-windiest month. For the whole year in context, see San Jacinto's year-round climate.

Daytime high
77°
5th warmest
Overnight low
54°
8th coldest
Rainfall
0.7 in
2.9 wet days
Daylight
11 h 06 min
5:59 AM – 5:07 PM
Cloud cover
24%
5th clearest
Wind
3 mph
9th windiest
Solar energy
4.97 kWh/m²
Travel score
8.6
out of 10

San Jacinto is city in Riverside County, California, United States.

Density
694/km²
people per km²
Founded
1888

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 81°F in the first days to 73°F by the end.

A typical October day in San Jacinto reaches about 77°F in the afternoon and slips back to 54°F overnight — a 23°F spread between the day's warmth and the night's chill. On most days the high lands between 65°F and 88°F. Set against its neighbours, October runs about 8°F cooler than September and about 10°F warmer than November.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
18258
28258
38158
48157
58057
68056
78056
88056
97956
107955
117955
127855
137855
147855
157854
167754
177754
187754
197653
207653
217653
227553
237552
247552
257452
267451
277451
287351
297350
307350
317250

San Jacinto weather by month

How October compares with the rest of the year at a glance. October is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan61° / 40°2.96.60.7105.6
Feb61° / 42°3.57.7110.75.5
Mar64° / 44°2.26.60.611.76.5
Apr69° / 48°1.14.50.312.87.6
May74° / 53°0.52.7013.78.6
Jun82° / 60°0.10.6014.28.1
Jul88° / 66°0.21.20145.8
Aug89° / 67°0.11013.35.5
Sep85° / 62°0.21012.26.9
Oct77° / 54°0.72.9011.18.6
Nov68° / 46°1.13.30.110.27.7
Dec60° / 40°2.35.50.49.85.6

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 74% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 11% of October, with mostly cloudy or overcast conditions the remaining 16%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
19010
29010
39010
48911
58911
68911
78911
88911
98911
108911
118812
128812
138812
148713
158713
168515
178515
188416
198317
208218
218119
228020
238020
248020
257822
267822
277921
287921
297822
307822
317822

Chance of precipitation in October

Any precipitation

San Jacinto gets around 0.7 in of rain over 2.9 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 9% and peaks near 12% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
15
25
35
46
56
66
76
87
97
107
118
128
138
148
159
169
179
1810
1910
2010
2111
2211
2311
2412
2512
2612
2712
2811
2911
3011
3111

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
187112
288102
38992
48992
59181
69271
79271
89361
99451
109451
119541
129631
139631
149631
159721
169721
179721
189721
199811
209811
219811
229811
239811
249910
259910
269910
279910
289910
299910
3010000
3110000

Wind in October

Winds average 3 mph in October.

Across October, daily wind ranges from about 3 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over October. Sunrise moves from 5:47 AM to 6:12 AM, and sunset from 5:27 PM to 4:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:475:27
211.65:485:25
311.65:485:24
411.65:495:23
511.55:505:21
611.55:515:20
711.55:515:19
811.45:525:17
911.45:535:16
1011.35:545:15
1111.35:555:13
1211.35:555:12
1311.25:565:11
1411.25:575:10
1511.25:585:08
1611.15:595:07
1711.15:595:06
1811.16:005:05
1911.06:015:04
2011.06:025:02
2111.06:035:01
2210.96:045:00
2310.96:054:59
2410.96:054:58
2510.86:064:57
2610.86:074:56
2710.86:084:55
2810.76:094:54
2910.76:104:53
3010.76:114:52
3110.76:124:51

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.97 kWh/m².

For context, solar energy here swings from a low near 3.08 kWh/m² to a high of 8.35 kWh/m² in June across the year — October's 4.97 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.6Bright
45.6Bright
55.5Bright
65.5Bright
75.4Bright
85.4Bright
95.3Bright
105.3Bright
115.2Bright
125.2Bright
135.1Bright
145.1Bright
155.0Bright
165.0Bright
174.9Bright
184.9Bright
194.8Bright
204.8Bright
214.7Bright
224.7Bright
234.6Bright
244.6Bright
254.5Bright
264.5Bright
274.4Bright
284.4Bright
294.4Bright
304.3Bright
314.3Bright
Planning a trip in October

Is October a good time to visit San Jacinto?

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

8.6
Sightseeing
1st-best month of the year
7.6
Beach & pool
5th-best month of the year

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

What to pack for San Jacinto in October

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

In October, San Jacinto sees daytime highs around 77°F and nights near 54°F. Worth packing: light clothes and sun protection.

light clothessun protection

UV index in San Jacinto in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October 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 San Jacinto peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 11Dec 17UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5High
Apr8Very high
May9Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in San Jacinto in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in San Jacinto is worst in September — around 40 µg/m³ PM2.5 (poor), about 5.4× the cleanest month (December, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodSep 1437 µg/m³Dec 207 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar11Good
Apr10Good
May8Good
Jun19Moderate
Jul12Moderate
Aug20Moderate
Sep40Poor
Oct10Good
Nov8Good
Dec7Good
Location & terrain

Where is San Jacinto?

San Jacinto sits at 33.8°N, 117.0°W, 1,565 ft above sea level, in United States. The nearest listed city is Hemet, 2.5 mi away.

Topography around San Jacinto

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

Within 2 miles, the terrain around San Jacinto has only modest variations in elevation — a maximum elevation change of 522 ft around an average of 1,568 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 4,350 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 11,598 ft.

The land around San Jacinto is covered by artificial surfaces (50%) and grassland (23%) within 2 miles, shrubs (41%) and grassland (29%) within 10 miles, and shrubs (33%) within 50 miles.

2 miles
522 ft
10 miles
4,350 ft
50 miles
11,598 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Hemet 2.5 mi · East Hemet 3.1 mi · Beaumont 9.9 mi · Banning 11 mi · Menifee 11 mi · Sun City 15 mi · Perris 16 mi · Yucaipa 18 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 San Jacinto (33.7839°, -116.9586°, elevation 1,565 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).