Chico weather in August

In August, Chico sees average daytime highs of 94°F and overnight lows near 65°F, with 0.1 in of rain across 0.3 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 96°F in the first days to 93°F by the end. The sky is clear or mostly clear about 90% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 06 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Chico's 2nd-clearest and 12th-windiest month. For the whole year in context, see Chico's year-round climate.

Daytime high
94°
2nd warmest
Overnight low
65°
11th coldest
Rainfall
0.1 in
0.3 wet days
Daylight
13 h 36 min
5:24 AM – 6:59 PM
Cloud cover
11%
2nd clearest
Wind
5 mph
12th windiest
Solar energy
7.38 kWh/m²
Travel score
3.7
out of 10

Chico is city in Butte County, California, United States.

Density
1,416/km²
people per km²
Founded
1860

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 96°F in the first days to 93°F by the end.

A typical August day in Chico reaches about 94°F in the afternoon and slips back to 65°F overnight — a 29°F spread between the day's warmth and the night's chill. On most days the high lands between 86°F and 101°F. Set against its neighbours, August runs on par with July and about 6°F warmer than September.

60°80°100°151015202531
Avg high (°F)Avg low (°F)
19667
29667
39667
49566
59566
69566
79566
89566
99566
109566
119566
129566
139566
149566
159465
169465
179465
189465
199465
209465
219465
229465
239465
249365
259365
269364
279364
289364
299364
309364
319264

How August really feels in Chico

Once humidity and wind are folded in, August averages 31 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
31
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Chico weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan57° / 40°7.211.20.59.53.9
Feb60° / 42°6.910.20.710.44.6
Mar64° / 45°5.910.90.411.75.8
Apr70° / 49°2.97.40.2137.0
May80° / 55°1.95.1014.27.6
Jun89° / 63°0.61.8014.85.2
Jul96° / 67°0.00.1014.53.2
Aug94° / 65°0.10.3013.63.7
Sep88° / 60°0.31.2012.35.8
Oct77° / 52°2.03.8010.98.1
Nov64° / 44°4.180.29.85.9
Dec56° / 40°7.911.40.59.23.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 4% of August, with mostly cloudy or overcast conditions the remaining 5%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1946
2946
3946
4946
5946
6946
7946
8946
9955
10955
11955
12955
13955
14955
15955
16955
17964
18964
19964
20964
21955
22955
23955
24955
25946
26946
27946
28946
29946
30946
31946

Chance of precipitation in August

Any precipitation

Chico gets around 0.1 in of rain over 0.3 wet days in August. 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
71
81
91
101
111
121
131
141
151
161
171
181
191
201
211
221
231
241
251
261
271
281
291
301
311

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 94% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19181
29271
39271
49361
59361
69451
79451
89451
99541
109541
119541
129541
139541
149451
159451
169451
179451
189451
199451
209451
219451
229541
239541
249541
259640
269640
279640
289730
299730
309631
319631

Wind in August

Winds average 5 mph in August, the calmest month.

Across August, 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.

0246810151015202531
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
315calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 06 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over August. Sunrise moves from 5:10 AM to 5:39 AM, and sunset from 7:17 PM to 6:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:107:17
214.15:117:16
314.15:127:15
414.05:137:14
514.05:147:13
613.95:157:11
713.95:157:10
813.95:167:09
913.85:177:08
1013.85:187:07
1113.85:197:05
1213.75:207:04
1313.75:217:03
1413.75:227:01
1513.65:237:00
1613.65:246:59
1713.55:256:57
1813.55:266:56
1913.55:276:55
2013.45:286:53
2113.45:296:52
2213.35:306:50
2313.35:316:49
2413.35:326:47
2513.25:336:46
2613.25:346:44
2713.15:356:43
2813.15:366:41
2913.05:376:39
3013.05:386:38
3113.05:396:36

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 7.38 kWh/m².

For context, solar energy here swings from a low near 1.94 kWh/m² to a high of 8.24 kWh/m² in July across the year — August's 7.38 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.9Intense
27.8Intense
37.8Intense
47.8Intense
57.8Intense
67.7Intense
77.7Intense
87.7Intense
97.6Intense
107.6Intense
117.6Intense
127.5Intense
137.5Intense
147.5Intense
157.4Intense
167.4Intense
177.4Intense
187.3Intense
197.3Intense
207.3Intense
217.2Intense
227.2Intense
237.1Intense
247.1Intense
257.0Intense
267.0Intense
277.0Intense
286.9Intense
296.9Intense
306.8Intense
316.8Intense
Planning a trip in August

Hazard calendar for Chico

In seasonPeak

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

Chico'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 August a good time to visit Chico?

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

3.7
Sightseeing
10th-best month of the year
7.6
Beach & pool
3rd-best month of the year

August is a weaker month for outdoor sightseeing in Chico. The water and warmth also suit a beach or pool day.

What to pack for Chico in August

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

In August, Chico sees daytime highs around 94°F and nights near 65°F. Pack light clothes and sun protection.

light clothessun protection

UV index in Chico in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chico peaks around June 22 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJun 22UV 10Dec 13UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5Moderate
Apr6High
May9Very high
Jun10Very high
Jul10Very high
Aug8Very high
Sep6High
Oct5Moderate
Nov2Low
Dec2Low

Air quality in Chico in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Chico is worst in July — around 64 µg/m³ PM2.5 (unhealthy), about 8.2× the cleanest month (December, 8 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateUnhealthyModerateJul 2363 µg/m³Dec 238 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar13Moderate
Apr13Moderate
May10Good
Jun10Good
Jul64Unhealthy
Aug59Unhealthy
Sep63Unhealthy
Oct17Moderate
Nov37Poor
Dec8Good
Location & terrain

Where is Chico?

Chico sits at 39.7°N, 121.8°W, 197 ft above sea level, in United States. The nearest listed city is Paradise, 12 mi away.

Topography around Chico

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

Within 2 miles, the terrain around Chico has only modest variations in elevation — a maximum elevation change of 128 ft around an average of 207 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,860 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,772 ft.

The land around Chico is covered by trees (62%) and artificial surfaces (29%) within 2 miles, trees (51%) and grassland (33%) within 10 miles, and trees (52%) and grassland (32%) within 50 miles.

2 miles
128 ft
10 miles
1,860 ft
50 miles
7,772 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Paradise 12 mi · Oroville 21 mi · Yuba City 42 mi · South Yuba City 43 mi · Linda 44 mi · Lincoln 65 mi · Redding 66 mi · Clearlake 68 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 Chico (39.7285°, -121.8375°, elevation 197 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).