Pasadena weather in January: Pasadena, California: normal highs, lows, rain and records for January
Pasadena in January has a normal high of 68°F and a normal low of 46°F, a daily mean of 57°F, rising from 67°F on the 1st to 69°F by the 31st. Measurable precipitation falls on 7 days in a normal January, 4.51 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 20°C and low of 8°C, 115 mm of precipitation in January.
- NOAA stationPasadena
- Station IDUSC00046719
- Location34.15°N 118.14°W
- Elevation864 ft (263 m)
- From the centerunder 1 mile
- Population137,195
- Jan 68° 46°
- Feb 69° 46°
- Mar 73° 48°
- Apr 76° 51°
- May 78° 54°
- Jun 84° 58°
- Jul 89° 62°
- Aug 91° 63°
- Sep 90° 62°
- Oct 83° 56°
- Nov 75° 50°
- Dec 67° 45°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Pasadena in January?
The normal high is 68°F and the normal low 46°F, for a daily mean of 56.8°F. January is 0.8°F warmer than December and 0.9°F cooler than February. January is the 11th warmest month of the year in Pasadena and the 2nd wettest. Across the month the normal high rises 2°F, from 67°F on January 1 to 69°F on January 31. From one year to the next January's mean temperature typically moves about 2.8°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 54°F and 60°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 23%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 67°F | 45°F | 22% | 16% |
| January 8 | 68°F | 45°F | 23% | 17% |
| January 15 | 68°F | 46°F | 22% | 16% |
| January 22 | 69°F | 46°F | 22% | 16% |
| January 31 | 69°F | 46°F | 23% | 16% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 28, coldest night January 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 67°F | 45°F | 22% | 16% | 9 h 50 min |
| January 2 | 67°F | 45°F | 23% | 16% | 10 h |
| January 3 | 67°F | 45°F | 23% | 17% | 10 h |
| January 4 | 67°F | 45°F | 23% | 17% | 10 h |
| January 5 | 67°F | 45°F | 23% | 17% | 10 h |
| January 6 | 68°F | 45°F | 23% | 17% | 10 h |
| January 7 | 68°F | 45°F | 23% | 17% | 10 h |
| January 8 | 68°F | 45°F | 23% | 17% | 10 h |
| January 9 | 68°F | 45°F | 23% | 17% | 10 h |
| January 10 | 68°F | 46°F | 23% | 17% | 10 h |
| January 11 | 68°F | 46°F | 23% | 17% | 10 h |
| January 12 | 68°F | 46°F | 22% | 17% | 10 h |
| January 13 | 68°F | 46°F | 22% | 17% | 10 h |
| January 14 | 68°F | 46°F | 22% | 16% | 10 h 10 min |
| January 15 | 68°F | 46°F | 22% | 16% | 10 h 10 min |
| January 16 | 68°F | 46°F | 22% | 16% | 10 h 10 min |
| January 17 | 68°F | 46°F | 22% | 16% | 10 h 10 min |
| January 18 | 68°F | 46°F | 22% | 16% | 10 h 10 min |
| January 19 | 68°F | 46°F | 22% | 16% | 10 h 10 min |
| January 20 | 68°F | 46°F | 22% | 16% | 10 h 10 min |
| January 21 | 69°F | 46°F | 22% | 16% | 10 h 10 min |
| January 22 | 69°F | 46°F | 22% | 16% | 10 h 20 min |
| January 23 | 69°F | 46°F | 22% | 16% | 10 h 20 min |
| January 24 | 69°F | 46°F | 23% | 16% | 10 h 20 min |
| January 25 | 69°F | 46°F | 23% | 16% | 10 h 20 min |
| January 26 | 69°F | 46°F | 23% | 16% | 10 h 20 min |
| January 27 | 69°F | 46°F | 23% | 16% | 10 h 20 min |
| January 28 | 69°F | 46°F | 23% | 16% | 10 h 20 min |
| January 29 | 69°F | 46°F | 23% | 16% | 10 h 30 min |
| January 30 | 69°F | 46°F | 23% | 16% | 10 h 30 min |
| January 31 | 69°F | 46°F | 23% | 16% | 10 h 30 min |
- Normal high
- 68°FJanuary average
- Normal low
- 46°FJanuary average
- Precipitation
- 4.51 inmonth total
- Days with precipitation
- 70.01 inch or more
- Daylight
- 9 h 50 min to 10 h 30 minJanuary 1 to January 31
- Days at 70°F or more
- 14
- Days at 80°F or more
- 3
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00046719; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Pasadena in January?
On a given January day the chance of 0.01 inch or more is 22% on average, highest around January 31 (23%). In all, 4.51 in falls on 7 days of a normal January, 2 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00046719.
What are the records for January in Pasadena?
The warmest January temperature on this station's record (since 1893) is 93°F, on January 18, 1971; the coldest is 21°F, on January 7, 1913. The wettest January brought 18.46 in (1995); the snowiest, 3.0 inches (1949).
The January mean against the 1991-2020 normal of 56.8°F: 2021 59.2°F (+2.4), 2022 59.9°F (+3.1), 2023 54.6°F (−2.2), 2024 57.9°F (+1.1), 2025 57.4°F (+0.6), 2026 62.2°F (+5.4). 5 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 59.2°F | +2.4°F | 2.67 in |
| 2022 | 59.9°F | +3.1°F | 0.23 in |
| 2023 | 54.6°F | −2.2°F | 13.45 in |
| 2024 | 57.9°F | +1.1°F | 1.81 in |
| 2025 | 57.4°F | +0.6°F | 0.55 in |
| 2026 | 62.2°F | +5.4°F | 4.13 in |
Source: records: ACIS, station USC00046719; recent months: ACIS, station USC00046719. Records and recent months use complete months only.
How does January in Pasadena 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; Pasadena's is 68°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.