Porterville weather in October

In October, Porterville sees average daytime highs of 77°F and overnight lows near 55°F, with 0.7 in of rain across 2.8 wet days and about 11.1 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 82°F in the first days to 72°F by the end. The sky is clear or mostly clear about 72% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 30 min by month's end. Set against the rest of the year, October is Porterville's 5th-clearest and 8th-windiest month. For the whole year in context, see Porterville's year-round climate.

Daytime high
77°
6th warmest
Overnight low
55°
7th coldest
Rainfall
0.7 in
2.8 wet days
Daylight
11 h 06 min
6:09 AM – 5:13 PM
Cloud cover
24%
5th clearest
Wind
3 mph
8th windiest
Solar energy
4.62 kWh/m²
Travel score
8.5
out of 10

Porterville is city in Tulare County, California, United States.

Density
1,224/km²
people per km²
Founded
1902

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 82°F in the first days to 72°F by the end.

A typical October day in Porterville reaches about 77°F in the afternoon and slips back to 55°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 67°F and 87°F. Set against its neighbours, October runs about 10°F cooler than September and about 12°F warmer than November.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
18260
28259
38259
48158
58158
68058
78057
88057
97957
107956
117956
127856
137856
147855
157755
167755
177755
187655
197654
207654
217554
227553
237453
247453
257452
267352
277352
287251
297251
307151
317151

How October really feels in Porterville

Once humidity and wind are folded in, October 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

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Porterville weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan58° / 42°3.28.89.84.6
Feb61° / 44°3.21010.65.0
Mar65° / 47°3.39.711.76.1
Apr70° / 50°1.76.212.97.3
May78° / 57°0.93.513.98.2
Jun87° / 64°0.20.814.46.3
Jul94° / 70°0.00.314.24.0
Aug93° / 69°0.00.213.44.1
Sep87° / 64°0.10.412.26.3
Oct77° / 55°0.72.811.18.5
Nov65° / 46°1.8610.16.7
Dec58° / 41°2.98.29.64.6

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 72% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 12% 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 (%)
1919
2919
3919
48911
58911
68911
78911
88812
98713
108713
118713
128713
138614
148614
158614
168515
178515
188416
198317
208317
218218
228218
238119
248020
257921
267921
277822
287822
297624
307624
317525

Chance of precipitation in October

Any precipitation

Porterville gets around 0.7 in of rain over 2.8 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 8% and peaks near 14% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
14
25
35
45
55
66
76
86
97
107
117
127
137
147
158
168
178
189
199
209
2110
2210
2310
2411
2511
2611
2712
2812
2913
3013
3114

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 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
187121
287121
388111
488111
589101
689101
79091
89091
99181
109181
119271
129271
139271
149361
159262
169262
179451
189451
199451
209451
219451
229451
239541
249541
259640
269640
279640
289730
299730
309730
319730

Wind in October

Winds average 3 mph in October.

Across October, daily wind ranges from about 3 mph on the calmest days to 3 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
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm
313calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over October. Sunrise moves from 5:56 AM to 6:24 AM, and sunset from 5:34 PM to 4:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:565:34
211.65:575:33
311.65:585:31
411.55:585:30
511.55:595:28
611.46:005:27
711.46:015:25
811.46:025:24
911.36:035:23
1011.36:045:21
1111.36:055:20
1211.26:055:18
1311.26:065:17
1411.16:075:16
1511.16:085:14
1611.16:095:13
1711.06:105:12
1811.06:115:11
1911.06:125:09
2010.96:135:08
2110.96:145:07
2210.86:155:06
2310.86:165:04
2410.86:175:03
2510.76:185:02
2610.76:195:01
2710.76:205:00
2810.66:214:59
2910.66:224:58
3010.66:234:57
3110.56:244:56

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.62 kWh/m².

For context, solar energy here swings from a low near 2.52 kWh/m² to a high of 8.25 kWh/m² in June across the year — October's 4.62 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.4Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
114.9Bright
124.9Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.6Bright
184.5Bright
194.5Bright
204.4Bright
214.4Bright
224.3Bright
234.3Bright
244.2Bright
254.1Bright
264.1Bright
274.0Bright
284.0Moderate
293.9Moderate
303.9Moderate
313.8Moderate
Planning a trip in October

Is October a good time to visit Porterville?

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

8.5
Sightseeing
1st-best month of the year
7.5
Beach & pool
6th-best month of the year

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

What to pack for Porterville in October

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

In October, Porterville sees daytime highs around 77°F and nights near 55°F. Worth packing: light clothes and sun protection.

light clothessun protection

UV index in Porterville in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Porterville peaks around June 20 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 20UV 10Dec 15UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun11Extreme
Jul10Very high
Aug10Very high
Sep7Very high
Oct5High
Nov3Moderate
Dec2Moderate

Air quality in Porterville 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 Porterville is worst in September — around 69 µg/m³ PM2.5 (unhealthy), about 7.3× the cleanest month (May, 10 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateUnhealthyModerateSep 1665 µg/m³May 2410 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar15Moderate
Apr12Good
May10Good
Jun10Good
Jul17Moderate
Aug33Moderate
Sep69Unhealthy
Oct36Poor
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Porterville?

Porterville sits at 36.1°N, 119.0°W, 459 ft above sea level, in United States. The nearest listed city is Tulare, 21 mi away.

Topography around Porterville

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

Within 2 miles, the terrain around Porterville has only modest variations in elevation — a maximum elevation change of 417 ft around an average of 469 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,926 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 13,510 ft.

The land around Porterville is covered by artificial surfaces (55%) and grassland (20%) within 2 miles, grassland (47%) and trees (25%) within 10 miles, and trees (36%) and grassland (35%) within 50 miles.

2 miles
417 ft
10 miles
1,926 ft
50 miles
13,510 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Tulare 21 mi · Visalia 24 mi · Delano 24 mi · Corcoran 30 mi · Wasco 37 mi · Dinuba 39 mi · Hanford 40 mi · Shafter 42 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 Porterville (36.0652°, -119.0168°, elevation 459 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).