Concord weather in October

In October, Concord sees average daytime highs of 75°F and overnight lows near 53°F, with 0.8 in of rain across 2.8 wet days and about 11 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 79°F in the first days to 71°F by the end. The sky is clear or mostly clear about 68% 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 24 min by month's end. Set against the rest of the year, October is Concord's 5th-clearest and 8th-windiest month. For the whole year in context, see Concord's year-round climate.

Daytime high
75°
5th warmest
Overnight low
53°
8th coldest
Rainfall
0.8 in
2.8 wet days
Daylight
11 hours
6:23 AM – 5:23 PM
Cloud cover
29%
5th clearest
Wind
5 mph
8th windiest
Solar energy
4.26 kWh/m²
Travel score
8.6
out of 10

Concord is city in Contra Costa County, California, United States.

Density
1,626/km²
people per km²
Founded
1869

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 79°F in the first days to 71°F by the end.

A typical October day in Concord reaches about 75°F in the afternoon and slips back to 53°F overnight — a 23°F spread between the day's warmth and the night's chill. On most days the high lands between 66°F and 85°F. Set against its neighbours, October runs about 6°F cooler than September and about 11°F warmer than November.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17955
27955
37954
47854
57854
67854
77854
87854
97754
107754
117753
127753
137653
147653
157653
167653
177553
187553
197552
207452
217452
227452
237352
247351
257351
267251
277251
287151
297150
307150
317050

Concord 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 daysDaylight (hours)Travel score
Jan57° / 42°3.78.99.74.2
Feb61° / 44°3.78.710.55.1
Mar65° / 47°2.88.311.76.3
Apr69° / 49°1.34.7137.4
May74° / 52°0.72.9148.5
Jun80° / 55°0.10.814.68.8
Jul82° / 57°0.00.214.48.8
Aug82° / 57°0.10.213.58.7
Sep81° / 56°0.10.412.38.7
Oct75° / 53°0.82.8118.6
Nov65° / 47°1.75.49.96.5
Dec57° / 43°3.38.69.44.3

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 68% 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 21%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18713
28614
38614
48515
58515
68416
78317
88218
98218
108218
118020
128020
138020
148020
157921
167921
177921
187822
197822
207822
217822
227723
237723
247723
257723
267624
277525
287426
297426
307327
317129

Chance of precipitation in October

Any precipitation

Concord gets around 0.8 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
96
106
117
127
137
147
157
167
178
188
199
209
2110
2210
2311
2411
2512
2612
2713
2813
2913
3014
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 85% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
177221
278211
379201
480191
580191
681181
782171
883161
983161
1084151
1184151
1284151
1385141
1485141
1585141
1685141
1785141
1886131
1986131
2086131
2187121
2287121
2388111
2488111
2590100
2690100
279190
289190
299190
309280
319280

Wind in October

Winds average 5 mph in October.

Across October, daily wind ranges from about 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
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 October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over October. Sunrise moves from 6:09 AM to 6:39 AM, and sunset from 5:45 PM to 5:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:095:45
211.66:105:44
311.56:115:42
411.56:125:41
511.46:125:39
611.46:135:38
711.46:145:36
811.36:155:35
911.36:165:33
1011.26:175:32
1111.26:185:30
1211.26:195:29
1311.16:205:27
1411.16:215:26
1511.06:225:25
1611.06:235:23
1711.06:245:22
1810.96:255:20
1910.96:265:19
2010.86:275:18
2110.86:285:16
2210.86:295:15
2310.76:305:14
2410.76:315:13
2510.66:325:11
2610.66:335:10
2710.66:355:09
2810.56:365:08
2910.56:375:07
3010.56:385:06
3110.46:395:05

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.26 kWh/m².

For context, solar energy here swings from a low near 2.14 kWh/m² to a high of 8.05 kWh/m² in June across the year — October's 4.26 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.0Bright
44.9Bright
54.9Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.6Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.3Bright
164.3Bright
174.2Bright
184.2Bright
194.1Bright
204.0Bright
214.0Moderate
223.9Moderate
233.9Moderate
243.8Moderate
253.8Moderate
263.7Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.5Moderate
313.4Moderate
Planning a trip in October

Is October a good time to visit Concord?

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

8.6
Sightseeing
5th-best month of the year
7.1
Beach & pool
5th-best month of the year

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

What to pack for Concord in October

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

In October, Concord sees daytime highs around 75°F and nights near 53°F. Worth packing: light clothes.

light clothes

Sea temperature near Concord in October

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

The sea at the nearest coast (about 33 mi away) is warmest in September at about 58°F and coldest in April near 53°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
Jan53Bracing
Feb53Bracing
Mar54Bracing
Apr53Bracing
May53Bracing
Jun54Bracing
Jul56Bracing
Aug58Bracing
Sep58Bracing
Oct57Bracing
Nov55Bracing
Dec54Bracing

UV index in Concord 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 Concord peaks around June 23 at about 10 (very high) — 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 highHighModerateJun 23UV 10Dec 15UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun10Very high
Jul10Very high
Aug10Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Low

Air quality in Concord 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 Concord is worst in September — around 29 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (June, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateSep 1829 µg/m³Jun 127 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar13Moderate
Apr10Good
May8Good
Jun7Good
Jul10Good
Aug25Moderate
Sep29Moderate
Oct27Moderate
Nov16Moderate
Dec12Good
Location & terrain

Where is Concord?

Concord sits at 38.0°N, 122.0°W, 75 ft above sea level, in United States. The nearest listed city is Pleasant Hill, 2.5 mi away.

Topography around Concord

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

Within 2 miles, the terrain around Concord has only modest variations in elevation — a maximum elevation change of 299 ft around an average of 85 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,819 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,452 ft.

The land around Concord is covered by artificial surfaces (64%) and trees (20%) within 2 miles, grassland (32%) and trees (27%) within 10 miles, and grassland (29%) and trees (23%) within 50 miles.

2 miles
299 ft
10 miles
3,819 ft
50 miles
4,452 ft
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Pleasant Hill 2.5 mi · Bay Point 5.0 mi · Walnut Creek 5.6 mi · Martinez 6.2 mi · Lafayette 8.1 mi · Benicia 8.7 mi · Pittsburg 8.7 mi · Orinda 11 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 Concord (37.978°, -122.0311°, elevation 75 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).