Visitacion Valley weather in January

In January, Visitacion Valley sees average daytime highs of 55°F and overnight lows near 47°F, with 4.3 in of rain across 10.1 wet days and about 9.7 hours of daylight. It is the 12th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 55°F through the month. 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 24 min at the start of January to 10 hours by month's end. Set against the rest of the year, January is Visitacion Valley's 12th-clearest and 9th-windiest month. For the whole year in context, see Visitacion Valley's year-round climate.

Daytime high
55°
12th warmest
Overnight low
47°
1st coldest
Rainfall
4.3 in
10.1 wet days
Daylight
9 h 42 min
7:29 AM – 5:09 PM
Cloud cover
60%
12th clearest
Wind
7 mph
9th windiest
Solar energy
2.36 kWh/m²
Travel score
3.7
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 55°F through the month.

A typical January day in Visitacion Valley reaches about 55°F in the afternoon and slips back to 47°F overnight — a 9°F spread between the day's warmth and the night's chill. On most days the high lands between 51°F and 60°F. Set against its neighbours, January runs on par with December and about 1°F cooler than February.

40°50°60°70°151015202531
Avg high (°F)Avg low (°F)
15546
25546
35546
45546
55546
65546
75546
85546
95546
105546
115546
125546
135546
145546
155547
165547
175547
185547
195647
205647
215647
225647
235647
245647
255647
265647
275647
285647
295647
305647
315647

Visitacion Valley weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan55° / 47°4.310.19.73.7
Feb57° / 48°4.49.310.54.0
Mar58° / 49°3.29.311.74.5
Apr59° / 50°1.5512.95.4
May61° / 52°0.72.8146.3
Jun64° / 54°0.20.814.67.5
Jul65° / 55°0.00.114.37.8
Aug66° / 56°0.00.113.57.9
Sep67° / 56°0.10.412.38.1
Oct65° / 54°0.93.1117.5
Nov60° / 50°2.26.1105.4
Dec56° / 47°4.210.19.43.8

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 11% of January, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14456
24456
34357
44357
54258
64357
74357
84357
94357
104357
114357
124357
134456
144456
154456
164456
174456
184654
194654
204555
214555
224555
234555
244555
254456
264555
274555
284555
294555
304555
314555

Chance of precipitation in January

Any precipitation

Visitacion Valley gets around 4.3 in of rain over 10.1 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 32% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
132
232
332
432
532
632
732
832
932
1032
1132
1232
1332
1432
1533
1633
1733
1833
1933
2034
2134
2233
2333
2433
2533
2632
2732
2831
2931
3031
3130

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.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
17991
18991
19991
20991
21991
221000
231000
241000
251000
261000
271000
281000
29991
30991
31991

Wind in January

Winds average 7 mph in January.

Across January, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
137light breeze
147light breeze
157light breeze
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 24 min at the start of January to 10 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over January. Sunrise moves from 7:30 AM to 7:22 AM, and sunset from 4:56 PM to 5:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.47:304:56
29.47:304:56
39.57:304:57
49.57:304:58
59.57:304:59
69.57:305:00
79.57:305:00
89.57:305:01
99.57:305:02
109.57:305:03
119.67:305:04
129.67:305:05
139.67:305:06
149.67:305:07
159.67:295:08
169.77:295:09
179.77:295:10
189.77:285:11
199.77:285:12
209.77:285:13
219.87:275:14
229.87:275:15
239.87:265:16
249.87:265:17
259.97:255:18
269.97:255:19
279.97:245:20
2810.07:245:21
2910.07:235:22
3010.07:225:23
3110.07:225:24

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.36 kWh/m².

For context, solar energy here swings from a low near 2.19 kWh/m² to a high of 7.72 kWh/m² in June across the year — January's 2.36 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.2Moderate
22.2Moderate
32.2Moderate
42.2Moderate
52.2Moderate
62.2Moderate
72.2Moderate
82.2Moderate
92.2Moderate
102.3Moderate
112.3Moderate
122.3Moderate
132.3Moderate
142.3Moderate
152.3Moderate
162.4Moderate
172.4Moderate
182.4Moderate
192.4Moderate
202.5Moderate
212.5Moderate
222.5Moderate
232.5Moderate
242.6Moderate
252.6Moderate
262.6Moderate
272.7Moderate
282.7Moderate
292.7Moderate
302.8Moderate
312.8Moderate
Planning a trip in January

Hazard calendar for Visitacion Valley

In seasonPeak

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

Visitacion Valley'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 Visitacion Valley?

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

3.7
Sightseeing
12th-best month of the year
0.0
Beach & pool
11th-best month of the year

January is a weaker month for outdoor sightseeing in Visitacion Valley.

What to pack for Visitacion Valley in January

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

In January, Visitacion Valley sees daytime highs around 55°F and nights near 47°F. Worth packing: a warm layer and rain gear. About 10 days see rain.

a warm layerrain gear

Sea temperature near Visitacion Valley in January

The nearest coast averages about 53°F in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 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
Feb54Bracing
Mar54Bracing
Apr53Bracing
May53Bracing
Jun54Bracing
Jul56Bracing
Aug58Bracing
Sep58Bracing
Oct57Bracing
Nov56Bracing
Dec54Bracing

UV index in Visitacion Valley 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 Visitacion Valley peaks around June 23 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 23UV 10Dec 15UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr6High
May8Very high
Jun10Extreme
Jul10Extreme
Aug10Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Moderate

Air quality in Visitacion Valley 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 Visitacion Valley is worst in August — around 25 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (June, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateAug 1824 µg/m³Jun 1110 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar16Moderate
Apr12Moderate
May10Good
Jun10Good
Jul11Good
Aug25Moderate
Sep17Moderate
Oct20Moderate
Nov18Moderate
Dec13Moderate
Location & terrain

Where is Visitacion Valley?

Visitacion Valley sits at 37.7°N, 122.4°W, 240 ft above sea level, in United States. The nearest listed city is Bayview-Hunters Point, 1.2 mi away.

Topography around Visitacion Valley

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

Within 2 miles, the terrain around Visitacion Valley has significant variations in elevation — a maximum elevation change of 830 ft around an average of 141 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,457 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,452 ft.

The land around Visitacion Valley is covered by artificial surfaces (60%) within 2 miles, water (59%) and artificial surfaces (26%) within 10 miles, and water (40%), grassland (23%) and trees (21%) within 50 miles.

2 miles
830 ft
10 miles
1,457 ft
50 miles
4,452 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
January weather nearby: Bayview-Hunters Point 1.2 mi · Noe Valley 2.5 mi · Mission District 3.1 mi · Daly City 3.1 mi · San Francisco 4.3 mi · South San Francisco 4.3 mi · Parkside 5.0 mi · Chinatown 5.6 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 Visitacion Valley (37.7171°, -122.4043°, elevation 240 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).