Redwood City weather in January: Redwood City, California: normal highs, lows, rain and records for January
Redwood City in January has a normal high of 59°F and a normal low of 41°F, a daily mean of 50°F, rising from 58°F on the 1st to 60°F by the 31st. Measurable precipitation falls on 9 days in a normal January, 3.81 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 15°C and low of 5°C, 97 mm of precipitation in January.
- NOAA stationRedwood City
- Station IDUSC00047339
- Location37.48°N 122.24°W
- Elevation31 ft (9 m)
- From the center3 miles
- Population82,982
- Jan 59° 41°
- Feb 62° 43°
- Mar 65° 45°
- Apr 69° 47°
- May 73° 50°
- Jun 79° 54°
- Jul 81° 57°
- Aug 81° 57°
- Sep 79° 54°
- Oct 75° 50°
- Nov 65° 44°
- Dec 59° 40°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Redwood City in January?
The normal high is 59°F and the normal low 41°F, for a daily mean of 49.7°F. January is 0.3°F warmer than December and 2.5°F cooler than February. January is the 11th warmest month of the year in Redwood City and the 2nd wettest. Across the month the normal high rises 2°F, from 58°F on January 1 to 60°F on January 31. From one year to the next January's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 48°F and 52°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 31%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 58°F | 40°F | 31% | 21% |
| January 8 | 59°F | 40°F | 31% | 21% |
| January 15 | 59°F | 40°F | 31% | 22% |
| January 22 | 59°F | 41°F | 31% | 23% |
| January 31 | 60°F | 41°F | 30% | 23% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 31, coldest night January 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 58°F | 40°F | 31% | 21% | 9 h 40 min |
| January 2 | 58°F | 40°F | 31% | 21% | 9 h 40 min |
| January 3 | 58°F | 40°F | 31% | 21% | 9 h 40 min |
| January 4 | 58°F | 40°F | 31% | 21% | 9 h 40 min |
| January 5 | 58°F | 40°F | 31% | 21% | 9 h 40 min |
| January 6 | 58°F | 40°F | 31% | 21% | 9 h 40 min |
| January 7 | 59°F | 40°F | 31% | 21% | 9 h 40 min |
| January 8 | 59°F | 40°F | 31% | 21% | 9 h 40 min |
| January 9 | 59°F | 40°F | 31% | 21% | 9 h 40 min |
| January 10 | 59°F | 40°F | 31% | 21% | 9 h 40 min |
| January 11 | 59°F | 40°F | 31% | 21% | 9 h 50 min |
| January 12 | 59°F | 40°F | 31% | 22% | 9 h 50 min |
| January 13 | 59°F | 40°F | 31% | 22% | 9 h 50 min |
| January 14 | 59°F | 40°F | 31% | 22% | 9 h 50 min |
| January 15 | 59°F | 40°F | 31% | 22% | 9 h 50 min |
| January 16 | 59°F | 41°F | 31% | 22% | 9 h 50 min |
| January 17 | 59°F | 41°F | 31% | 22% | 9 h 50 min |
| January 18 | 59°F | 41°F | 31% | 22% | 9 h 50 min |
| January 19 | 59°F | 41°F | 30% | 22% | 10 h |
| January 20 | 59°F | 41°F | 30% | 22% | 10 h |
| January 21 | 59°F | 41°F | 30% | 23% | 10 h |
| January 22 | 59°F | 41°F | 31% | 23% | 10 h |
| January 23 | 59°F | 41°F | 31% | 23% | 10 h |
| January 24 | 59°F | 41°F | 30% | 23% | 10 h |
| January 25 | 59°F | 41°F | 30% | 23% | 10 h 10 min |
| January 26 | 59°F | 41°F | 30% | 23% | 10 h 10 min |
| January 27 | 60°F | 41°F | 30% | 23% | 10 h 10 min |
| January 28 | 60°F | 41°F | 30% | 23% | 10 h 10 min |
| January 29 | 60°F | 41°F | 30% | 23% | 10 h 10 min |
| January 30 | 60°F | 41°F | 30% | 23% | 10 h 10 min |
| January 31 | 60°F | 41°F | 30% | 23% | 10 h 20 min |
- Normal high
- 59°FJanuary average
- Normal low
- 41°FJanuary average
- Precipitation
- 3.81 inmonth total
- Days with precipitation
- 90.01 inch or more
- Nights at 32°F or colder
- 3
- Daylight
- 9 h 40 min to 10 h 20 minJanuary 1 to January 31
- Days at 70°F or more
- 1
- Sunshine
- 76%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00047339; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Redwood City in January?
On a given January day the chance of 0.01 inch or more is 30% on average, highest around January 3 (31%). In all, 3.81 in falls on 9 days of a normal January, 1 of them with an inch or more.
In a normal January in Redwood City, 3 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00047339.
What are the records for January in Redwood City?
The warmest January temperature on this station's record (since 1930) is 78°F, on January 23, 1948; the coldest is 16°F, on January 11, 1949. The wettest January brought 13.66 in (1916).
The January mean against the 1991-2020 normal of 49.7°F: 2021 50.7°F (+1.0), 2022 50.4°F (+0.7), 2023 50.5°F (+0.8), 2024 52.6°F (+2.9), 2025 50.9°F (+1.2), 2026 53.5°F (+3.8). 6 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 50.7°F | +1.0°F | – |
| 2022 | 50.4°F | +0.7°F | 0.15 in |
| 2023 | 50.5°F | +0.8°F | 9.49 in |
| 2024 | 52.6°F | +2.9°F | 5.53 in |
| 2025 | 50.9°F | +1.2°F | 0.15 in |
| 2026 | 53.5°F | +3.8°F | 2.96 in |
Source: records: ACIS, station USC00047339; recent months: ACIS, station USC00047339. Records and recent months use complete months only.
How does January in Redwood City compare across California?
Across the 219 places PlainClimate covers in California, January normal highs run from 37°F in Tahoma to 72°F in Brawley; Redwood City's is 59°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Redwood City in December59°F by day, 40°F at night
- Redwood City in February62°F by day, 43°F at night
- Redwood City through the yearEvery month, frost dates, records and recent years
- California in JanuaryThe statewide normal and the warmest and coolest places
- Brawley: California's warmest Januarynormal high 72°F