West Chester weather in January: West Chester, Pennsylvania: normal highs, lows, rain and records for January
West Chester in January has a normal high of 40°F and a normal low of 20°F, a daily mean of 30°F, holding near 40°F all month. Measurable precipitation falls on 11 days in a normal January, 3.65 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 4°C and low of −7°C, 93 mm of precipitation and 20 cm of snow in January.
- NOAA stationWest Chester (2 mi NW)
- Station IDUSC00369464
- Location39.97°N 75.64°W
- Elevation375 ft (114 m)
- From the center2 miles
- Population22,758
- Jan 40° 20°
- Feb 43° 21°
- Mar 51° 29°
- Apr 63° 38°
- May 73° 49°
- Jun 82° 59°
- Jul 86° 64°
- Aug 84° 62°
- Sep 78° 54°
- Oct 66° 41°
- Nov 55° 32°
- Dec 44° 25°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is West Chester in January?
The normal high is 40°F and the normal low 20°F, for a daily mean of 29.6°F. January is 5.2°F cooler than December and 2.3°F cooler than February. January is the 12th warmest month of the year in West Chester and the 10th wettest. Across the month the normal high falls 1°F, from 41°F on January 1 to 40°F on January 31. From one year to the next January's mean temperature typically moves about 4.3°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 25°F and 34°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 35%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 41°F | 22°F | 35% | 21% |
| January 8 | 40°F | 20°F | 34% | 21% |
| January 15 | 39°F | 19°F | 34% | 20% |
| January 22 | 39°F | 19°F | 33% | 20% |
| January 31 | 40°F | 19°F | 32% | 19% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 1, coldest night January 24)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 41°F | 22°F | 35% | 21% | 9 h 20 min |
| January 2 | 41°F | 22°F | 35% | 21% | 9 h 20 min |
| January 3 | 40°F | 21°F | 35% | 21% | 9 h 20 min |
| January 4 | 40°F | 21°F | 35% | 21% | 9 h 30 min |
| January 5 | 40°F | 21°F | 35% | 21% | 9 h 30 min |
| January 6 | 40°F | 21°F | 35% | 21% | 9 h 30 min |
| January 7 | 40°F | 21°F | 35% | 21% | 9 h 30 min |
| January 8 | 40°F | 20°F | 34% | 21% | 9 h 30 min |
| January 9 | 40°F | 20°F | 34% | 21% | 9 h 30 min |
| January 10 | 40°F | 20°F | 34% | 21% | 9 h 30 min |
| January 11 | 39°F | 20°F | 34% | 21% | 9 h 30 min |
| January 12 | 39°F | 20°F | 34% | 21% | 9 h 30 min |
| January 13 | 39°F | 20°F | 34% | 20% | 9 h 30 min |
| January 14 | 39°F | 20°F | 34% | 20% | 9 h 40 min |
| January 15 | 39°F | 19°F | 34% | 20% | 9 h 40 min |
| January 16 | 39°F | 19°F | 34% | 20% | 9 h 40 min |
| January 17 | 39°F | 19°F | 34% | 20% | 9 h 40 min |
| January 18 | 39°F | 19°F | 34% | 20% | 9 h 40 min |
| January 19 | 39°F | 19°F | 34% | 20% | 9 h 40 min |
| January 20 | 39°F | 19°F | 33% | 20% | 9 h 50 min |
| January 21 | 39°F | 19°F | 33% | 20% | 9 h 50 min |
| January 22 | 39°F | 19°F | 33% | 20% | 9 h 50 min |
| January 23 | 39°F | 19°F | 33% | 20% | 9 h 50 min |
| January 24 | 39°F | 19°F | 33% | 20% | 9 h 50 min |
| January 25 | 39°F | 19°F | 33% | 20% | 9 h 50 min |
| January 26 | 39°F | 19°F | 33% | 20% | 10 h |
| January 27 | 39°F | 19°F | 33% | 20% | 10 h |
| January 28 | 39°F | 19°F | 32% | 19% | 10 h |
| January 29 | 40°F | 19°F | 32% | 19% | 10 h |
| January 30 | 40°F | 19°F | 32% | 19% | 10 h |
| January 31 | 40°F | 19°F | 32% | 19% | 10 h 10 min |
- Normal high
- 40°FJanuary average
- Normal low
- 20°FJanuary average
- Precipitation
- 3.65 inmonth total
- Days with precipitation
- 110.01 inch or more
- Snowfall
- 7.9 inmonth total
- Nights at 32°F or colder
- 27
- Daylight
- 9 h 20 min to 10 h 10 minJanuary 1 to January 31
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00369464; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in West Chester in January?
On a given January day the chance of 0.01 inch or more is 34% on average, highest around January 1 (35%). In all, 3.65 in falls on 11 days of a normal January, 1 of them with an inch or more.
In a normal January in West Chester, 27 nights fall to freezing, 8 days stay below freezing all day and snowfall averages 7.9 inches.
Snow falls on 5 days in a normal January, and an inch or more covers the ground on 11 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00369464.
What are the records for January in West Chester?
The warmest January temperature on this station's record (since 1893) is 73°F, on January 26, 1950; the coldest is −16°F, on January 22, 1984. The wettest January brought 9.96 in (1979); the snowiest, 25.9 inches (2016).
Source: records: ACIS, station USC00369464. Records and recent months use complete months only.
How does January in West Chester compare across Pennsylvania?
Across the 108 places PlainClimate covers in Pennsylvania, January normal highs run from 29°F in Laporte to 43°F in Marcus Hook; West Chester's is 40°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- West Chester in December44°F by day, 25°F at night
- West Chester in February43°F by day, 21°F at night
- West Chester through the yearEvery month, frost dates, records and recent years
- Pennsylvania in JanuaryThe statewide normal and the warmest and coolest places
- Marcus Hook: Pennsylvania's warmest Januarynormal high 43°F