South Yuba City weather in January

In January, South Yuba City sees average daytime highs of 59°F and overnight lows near 42°F, with 4.4 in of rain across 9.8 wet days and about 9.6 hours of daylight. It is the 11th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 57°F in the first days to 61°F by the end. The sky is clear or mostly clear about 33% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 18 min at the start of January to 9 h 54 min by month's end. Set against the rest of the year, January is South Yuba City's 12th-clearest and 8th-windiest month. For the whole year in context, see South Yuba City's year-round climate.

Daytime high: 59°; 11th warmest
Overnight low: 42°; 2nd coldest
Rainfall: 4.4 in; 9.8 wet days
Daylight: 9 h 30 min; 7:30 AM – 5:02 PM
Cloud cover: 59%; 12th clearest
Wind: 5 mph; 8th windiest
Solar energy: 2.2 kWh/m²
Travel score: 4.5; out of 10

South Yuba City is unincorporated community and former census-designated place in Sutter County, California, United States.

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

← December South Yuba City year-round climate February →Best places to visit in January

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 57°F in the first days to 61°F by the end.

A typical January day in South Yuba City reaches about 59°F in the afternoon and slips back to 42°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 52°F and 66°F. Set against its neighbours, January runs on par with December and about 4°F cooler than February.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°F)	57	57	57	57	57	57	57	58	58	58	58	58	58	58	58	58	59	59	59	59	59	59	60	60	60	60	60	61	61	61	61
Avg low (°F)	41	41	41	41	41	41	42	42	42	42	42	42	42	42	42	42	42	42	42	42	42	43	43	43	43	43	43	43	43	43	43

	Avg high (°F)	Avg low (°F)
1	57	41
2	57	41
3	57	41
4	57	41
5	57	41
6	57	41
7	57	42
8	58	42
9	58	42
10	58	42
11	58	42
12	58	42
13	58	42
14	58	42
15	58	42
16	58	42
17	59	42
18	59	42
19	59	42
20	59	42
21	59	42
22	59	43
23	60	43
24	60	43
25	60	43
26	60	43
27	60	43
28	61	43
29	61	43
30	61	43
31	61	43

How January really feels in South Yuba City

Once humidity and wind are folded in, January 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

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

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

South Yuba City weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Daylight (hours)	Travel score
Jan	59° / 42°	4.4	9.8	9.6	4.5
Feb	63° / 45°	4.0	8.9	10.5	5.6
Mar	68° / 48°	3.3	8.9	11.7	6.6
Apr	75° / 52°	1.5	5.5	13	7.6
May	85° / 58°	0.9	3.6	14.1	6.5
Jun	93° / 64°	0.2	1	14.7	3.9
Jul	97° / 65°	0.0	0.1	14.5	2.5
Aug	96° / 64°	0.0	0.2	13.5	3.2
Sep	91° / 61°	0.1	0.6	12.3	5.0
Oct	80° / 55°	1.1	3.1	11	7.9
Nov	67° / 47°	2.3	6.2	9.9	6.8
Dec	58° / 42°	4.1	9.7	9.3	4.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 55%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	44	44	43	43	43	43	44	44	43	43	44	44	45	45	45	46	47	47	47	47	46	47	47	46	46	46	45	45	45	45	45
Cloudier (%)	56	56	57	57	57	57	56	56	57	57	56	56	55	55	55	54	53	53	53	53	54	53	53	54	54	54	55	55	55	55	55

	Clearer (%)	Cloudier (%)
1	44	56
2	44	56
3	43	57
4	43	57
5	43	57
6	43	57
7	44	56
8	44	56
9	43	57
10	43	57
11	44	56
12	44	56
13	45	55
14	45	55
15	45	55
16	46	54
17	47	53
18	47	53
19	47	53
20	47	53
21	46	54
22	47	53
23	47	53
24	46	54
25	46	54
26	46	54
27	45	55
28	45	55
29	45	55
30	45	55
31	45	55

Chance of precipitation in January

Any precipitation

South Yuba City gets around 4.4 in of rain over 9.8 wet days in January, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 31% and peaks near 32% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	31	31	32	32	32	32	32	31	31	31	31	31	31	31	32	32	32	32	32	32	32	32	32	32	31	31	31	30	30	29	29

	Rain chance (%)
1	31
2	31
3	32
4	32
5	32
6	32
7	32
8	31
9	31
10	31
11	31
12	31
13	31
14	31
15	32
16	32
17	32
18	32
19	32
20	32
21	32
22	32
23	32
24	32
25	31
26	31
27	31
28	30
29	30
30	29
31	29

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	98	98	98	98	98	98	98	98	98	98	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99
Comfortable (%)	2	2	2	2	2	2	2	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)
1	98	2
2	98	2
3	98	2
4	98	2
5	98	2
6	98	2
7	98	2
8	98	2
9	98	2
10	98	2
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1

Wind in January

Winds average 5 mph in January.

Across January, 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.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (mph)	6	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (mph)	Feels
1	6	calm
2	5	calm
3	5	calm
4	5	calm
5	5	calm
6	5	calm
7	5	calm
8	5	calm
9	5	calm
10	5	calm
11	5	calm
12	5	calm
13	5	calm
14	5	calm
15	5	calm
16	5	calm
17	5	calm
18	5	calm
19	5	calm
20	5	calm
21	5	calm
22	5	calm
23	5	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm
31	5	calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 18 min at the start of January to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over January. Sunrise moves from 7:31 AM to 7:22 AM, and sunset from 4:49 PM to 5:18 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	9.3	9.3	9.3	9.3	9.3	9.4	9.4	9.4	9.4	9.4	9.4	9.5	9.5	9.5	9.5	9.5	9.6	9.6	9.6	9.6	9.7	9.7	9.7	9.7	9.8	9.8	9.8	9.9	9.9	9.9	9.9
Sunrise (AM)	7:31	7:31	7:31	7:31	7:31	7:31	7:31	7:31	7:31	7:31	7:31	7:31	7:31	7:30	7:30	7:30	7:29	7:29	7:29	7:28	7:28	7:27	7:27	7:26	7:26	7:25	7:24	7:24	7:23	7:22	7:22
Sunset (PM)	4:49	4:49	4:50	4:51	4:52	4:53	4:53	4:54	4:55	4:56	4:57	4:58	4:59	5:00	5:01	5:02	5:03	5:04	5:05	5:06	5:07	5:08	5:09	5:10	5:11	5:13	5:14	5:15	5:16	5:17	5:18

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	9.3	7:31	4:49
2	9.3	7:31	4:49
3	9.3	7:31	4:50
4	9.3	7:31	4:51
5	9.3	7:31	4:52
6	9.4	7:31	4:53
7	9.4	7:31	4:53
8	9.4	7:31	4:54
9	9.4	7:31	4:55
10	9.4	7:31	4:56
11	9.4	7:31	4:57
12	9.5	7:31	4:58
13	9.5	7:31	4:59
14	9.5	7:30	5:00
15	9.5	7:30	5:01
16	9.5	7:30	5:02
17	9.6	7:29	5:03
18	9.6	7:29	5:04
19	9.6	7:29	5:05
20	9.6	7:28	5:06
21	9.7	7:28	5:07
22	9.7	7:27	5:08
23	9.7	7:27	5:09
24	9.7	7:26	5:10
25	9.8	7:26	5:11
26	9.8	7:25	5:13
27	9.8	7:24	5:14
28	9.9	7:24	5:15
29	9.9	7:23	5:16
30	9.9	7:22	5:17
31	9.9	7:22	5:18

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.2 kWh/m².

For context, solar energy here swings from a low near 2.02 kWh/m² to a high of 8.21 kWh/m² in July across the year — January's 2.2 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	2.0	2.0	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.2	2.2	2.2	2.2	2.3	2.3	2.3	2.3	2.4	2.4	2.4	2.5	2.5	2.5	2.6	2.6	2.6
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	2.0	Moderate
2	2.0	Moderate
3	2.1	Moderate
4	2.1	Moderate
5	2.1	Moderate
6	2.1	Moderate
7	2.1	Moderate
8	2.1	Moderate
9	2.1	Moderate
10	2.1	Moderate
11	2.1	Moderate
12	2.1	Moderate
13	2.1	Moderate
14	2.1	Moderate
15	2.2	Moderate
16	2.2	Moderate
17	2.2	Moderate
18	2.2	Moderate
19	2.3	Moderate
20	2.3	Moderate
21	2.3	Moderate
22	2.3	Moderate
23	2.4	Moderate
24	2.4	Moderate
25	2.4	Moderate
26	2.5	Moderate
27	2.5	Moderate
28	2.5	Moderate
29	2.6	Moderate
30	2.6	Moderate
31	2.6	Moderate

Planning a trip in January

Hazard calendar for South Yuba City

In seasonPeak

In January, South Yuba City sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

South Yuba City'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 January a good time to visit South Yuba City?

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

4.5

Sightseeing

8th-best month of the year

0.2

Beach & pool

11th-best month of the year

January is a reasonable time to visit South Yuba City for sightseeing.

What to pack for South Yuba City in January

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

In January, South Yuba City sees daytime highs around 59°F and nights near 42°F. Worth packing: a warm layer and rain gear. About 10 days see rain.

a warm layerrain gear

UV index in South Yuba City in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in South Yuba City peaks around June 22 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 2 (low).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	2	3	4	6	8	10	10	9	6	5	2	2
Level	Moderate	Moderate	Moderate	High	Very high	Very high	Very high	Very high	High	Moderate	Low	Low

	UV index (midday)	Level
Jan	2	Moderate
Feb	3	Moderate
Mar	4	Moderate
Apr	6	High
May	8	Very high
Jun	10	Very high
Jul	10	Very high
Aug	9	Very high
Sep	6	High
Oct	5	Moderate
Nov	2	Low
Dec	2	Low

Air quality in South Yuba City in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in South Yuba City is worst in September — around 41 µg/m³ PM2.5 (poor), about 3.8× the cleanest month (June, 11 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	13	15	18	15	11	11	21	37	41	21	31	13
Level	Moderate	Moderate	Moderate	Moderate	Good	Good	Moderate	Poor	Poor	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	13	Moderate
Feb	15	Moderate
Mar	18	Moderate
Apr	15	Moderate
May	11	Good
Jun	11	Good
Jul	21	Moderate
Aug	37	Poor
Sep	41	Poor
Oct	21	Moderate
Nov	31	Moderate
Dec	13	Moderate

Location & terrain

Where is South Yuba City?

South Yuba City sits at 39.1°N, 121.6°W, 52 ft above sea level, in United States. The nearest listed city is Yuba City, 1.9 mi away.

Topography around South Yuba City

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

Within 2 miles, the terrain around South Yuba City has only modest variations in elevation — a maximum elevation change of 49 ft around an average of 56 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,040 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,538 ft.

The land around South Yuba City is covered by artificial surfaces (44%) and trees (35%) within 2 miles, cropland (40%), grassland (28%) and trees (22%) within 10 miles, and trees (43%), grassland (28%) and cropland (22%) within 50 miles.

2 miles

49 ft

artificial surfaces 44%

10 miles

1,040 ft

cropland 40%

50 miles

5,538 ft

trees 43%

treesgrasslandcroplandartificial surfacesbare terrainwaterwetland

← December South Yuba City year-round climate February →Best places to visit in January

January weather nearby: Yuba City 1.9 mi · Linda 5.0 mi · Lincoln 24 mi · Oroville 28 mi · Woodland 31 mi · Rio Linda 31 mi · Rocklin 31 mi · Roseville 32 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

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 South Yuba City (39.1166°, -121.6391°, elevation 52 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).

	Avg high (°F)	Avg low (°F)
1	57	41
2	57	41
3	57	41
4	57	41
5	57	41
6	57	41
7	57	42
8	58	42
9	58	42
10	58	42
11	58	42
12	58	42
13	58	42
14	58	42
15	58	42
16	58	42
17	59	42
18	59	42
19	59	42
20	59	42
21	59	42
22	59	43
23	60	43
24	60	43
25	60	43
26	60	43
27	60	43
28	61	43
29	61	43
30	61	43
31	61	43

	Clearer (%)	Cloudier (%)
1	44	56
2	44	56
3	43	57
4	43	57
5	43	57
6	43	57
7	44	56
8	44	56
9	43	57
10	43	57
11	44	56
12	44	56
13	45	55
14	45	55
15	45	55
16	46	54
17	47	53
18	47	53
19	47	53
20	47	53
21	46	54
22	47	53
23	47	53
24	46	54
25	46	54
26	46	54
27	45	55
28	45	55
29	45	55
30	45	55
31	45	55

	Rain chance (%)
1	31
2	31
3	32
4	32
5	32
6	32
7	32
8	31
9	31
10	31
11	31
12	31
13	31
14	31
15	32
16	32
17	32
18	32
19	32
20	32
21	32
22	32
23	32
24	32
25	31
26	31
27	31
28	30
29	30
30	29
31	29

	Dry (%)	Comfortable (%)
1	98	2
2	98	2
3	98	2
4	98	2
5	98	2
6	98	2
7	98	2
8	98	2
9	98	2
10	98	2
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1

	Avg high (°F)	Avg low (°F)
1	57	41
2	57	41
3	57	41
4	57	41
5	57	41
6	57	41
7	57	42
8	58	42
9	58	42
10	58	42
11	58	42
12	58	42
13	58	42
14	58	42
15	58	42
16	58	42
17	59	42
18	59	42
19	59	42
20	59	42
21	59	42
22	59	43
23	60	43
24	60	43
25	60	43
26	60	43
27	60	43
28	61	43
29	61	43
30	61	43
31	61	43

	Clearer (%)	Cloudier (%)
1	44	56
2	44	56
3	43	57
4	43	57
5	43	57
6	43	57
7	44	56
8	44	56
9	43	57
10	43	57
11	44	56
12	44	56
13	45	55
14	45	55
15	45	55
16	46	54
17	47	53
18	47	53
19	47	53
20	47	53
21	46	54
22	47	53
23	47	53
24	46	54
25	46	54
26	46	54
27	45	55
28	45	55
29	45	55
30	45	55
31	45	55

	Rain chance (%)
1	31
2	31
3	32
4	32
5	32
6	32
7	32
8	31
9	31
10	31
11	31
12	31
13	31
14	31
15	32
16	32
17	32
18	32
19	32
20	32
21	32
22	32
23	32
24	32
25	31
26	31
27	31
28	30
29	30
30	29
31	29

	Dry (%)	Comfortable (%)
1	98	2
2	98	2
3	98	2
4	98	2
5	98	2
6	98	2
7	98	2
8	98	2
9	98	2
10	98	2
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1

	Avg high (°F)	Avg low (°F)
1	57	41
2	57	41
3	57	41
4	57	41
5	57	41
6	57	41
7	57	42
8	58	42
9	58	42
10	58	42
11	58	42
12	58	42
13	58	42
14	58	42
15	58	42
16	58	42
17	59	42
18	59	42
19	59	42
20	59	42
21	59	42
22	59	43
23	60	43
24	60	43
25	60	43
26	60	43
27	60	43
28	61	43
29	61	43
30	61	43
31	61	43

	Clearer (%)	Cloudier (%)
1	44	56
2	44	56
3	43	57
4	43	57
5	43	57
6	43	57
7	44	56
8	44	56
9	43	57
10	43	57
11	44	56
12	44	56
13	45	55
14	45	55
15	45	55
16	46	54
17	47	53
18	47	53
19	47	53
20	47	53
21	46	54
22	47	53
23	47	53
24	46	54
25	46	54
26	46	54
27	45	55
28	45	55
29	45	55
30	45	55
31	45	55

	Rain chance (%)
1	31
2	31
3	32
4	32
5	32
6	32
7	32
8	31
9	31
10	31
11	31
12	31
13	31
14	31
15	32
16	32
17	32
18	32
19	32
20	32
21	32
22	32
23	32
24	32
25	31
26	31
27	31
28	30
29	30
30	29
31	29

	Dry (%)	Comfortable (%)
1	98	2
2	98	2
3	98	2
4	98	2
5	98	2
6	98	2
7	98	2
8	98	2
9	98	2
10	98	2
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1