Johnstown weather in January: Johnstown, Pennsylvania: normal highs, lows, rain and records for January
Johnstown in January has a normal high of 33°F and a normal low of 19°F, a daily mean of 26°F, holding near 33°F all month. Measurable precipitation falls on 15 days in a normal January, 2.54 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 1°C and low of −7°C, 65 mm of precipitation in January.
- NOAA stationJohnstown Cambria County Airport
- Station IDUSW00004726
- Location40.32°N 78.83°W
- Elevation2,284 ft (696 m)
- From the center5 miles
- Population17,853
- Jan 33° 19°
- Feb 36° 21°
- Mar 45° 28°
- Apr 58° 38°
- May 68° 49°
- Jun 75° 57°
- Jul 79° 61°
- Aug 77° 60°
- Sep 71° 53°
- Oct 59° 43°
- Nov 47° 33°
- Dec 38° 25°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Johnstown in January?
The normal high is 33°F and the normal low 19°F, for a daily mean of 26.3°F. January is 4.9°F cooler than December and 2.4°F cooler than February. January is the 12th warmest month of the year in Johnstown and the 11th wettest. Across the month the normal high falls 1°F, from 35°F on January 1 to 34°F on January 31. From one year to the next January's mean temperature typically moves about 4.9°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 21°F and 31°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 50%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 35°F | 21°F | 48% | 22% |
| January 8 | 34°F | 20°F | 49% | 21% |
| January 15 | 33°F | 19°F | 49% | 21% |
| January 22 | 33°F | 19°F | 49% | 21% |
| January 31 | 34°F | 19°F | 50% | 21% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 1, coldest night January 20)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 35°F | 21°F | 48% | 22% | 9 h 20 min |
| January 2 | 34°F | 21°F | 48% | 22% | 9 h 20 min |
| January 3 | 34°F | 21°F | 49% | 22% | 9 h 20 min |
| January 4 | 34°F | 20°F | 49% | 22% | 9 h 20 min |
| January 5 | 34°F | 20°F | 49% | 22% | 9 h 20 min |
| January 6 | 34°F | 20°F | 49% | 22% | 9 h 20 min |
| January 7 | 34°F | 20°F | 49% | 21% | 9 h 30 min |
| January 8 | 34°F | 20°F | 49% | 21% | 9 h 30 min |
| January 9 | 34°F | 20°F | 49% | 21% | 9 h 30 min |
| January 10 | 33°F | 20°F | 49% | 21% | 9 h 30 min |
| January 11 | 33°F | 19°F | 49% | 21% | 9 h 30 min |
| January 12 | 33°F | 19°F | 49% | 21% | 9 h 30 min |
| January 13 | 33°F | 19°F | 49% | 21% | 9 h 30 min |
| January 14 | 33°F | 19°F | 49% | 21% | 9 h 30 min |
| January 15 | 33°F | 19°F | 49% | 21% | 9 h 40 min |
| January 16 | 33°F | 19°F | 49% | 21% | 9 h 40 min |
| January 17 | 33°F | 19°F | 49% | 21% | 9 h 40 min |
| January 18 | 33°F | 19°F | 49% | 21% | 9 h 40 min |
| January 19 | 33°F | 19°F | 49% | 21% | 9 h 40 min |
| January 20 | 33°F | 19°F | 49% | 21% | 9 h 40 min |
| January 21 | 33°F | 19°F | 49% | 21% | 9 h 50 min |
| January 22 | 33°F | 19°F | 49% | 21% | 9 h 50 min |
| January 23 | 33°F | 19°F | 50% | 21% | 9 h 50 min |
| January 24 | 33°F | 19°F | 50% | 21% | 9 h 50 min |
| January 25 | 33°F | 19°F | 50% | 21% | 9 h 50 min |
| January 26 | 33°F | 19°F | 50% | 21% | 9 h 50 min |
| January 27 | 33°F | 19°F | 50% | 21% | 10 h |
| January 28 | 33°F | 19°F | 50% | 21% | 10 h |
| January 29 | 33°F | 19°F | 50% | 21% | 10 h |
| January 30 | 34°F | 19°F | 50% | 21% | 10 h |
| January 31 | 34°F | 19°F | 50% | 21% | 10 h |
- Normal high
- 33°FJanuary average
- Normal low
- 19°FJanuary average
- Precipitation
- 2.54 inmonth total
- Days with precipitation
- 150.01 inch or more
- Nights at 32°F or colder
- 27
- Daylight
- 9 h 20 min to 10 hJanuary 1 to January 31
- Sunshine
- 56%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00004726; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Johnstown in January?
On a given January day the chance of 0.01 inch or more is 49% on average, highest around January 26 (50%). In all, 2.54 in falls on 15 days of a normal January.
In a normal January in Johnstown, 27 nights fall to freezing and 17 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00004726.
How humid and windy is Johnstown in January?
At 3 p.m. the normal temperature is 30°F with 66% relative humidity and a dew point of 19°F; at 6 a.m. it is 24°F with 79% humidity. The wind averages 11.3 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 24°F | 18°F | 79% | 10.6 mph | – |
| 9 a.m. | 24°F | 18°F | 78% | 11.1 mph | – |
| noon | 28°F | 19°F | 70% | 12.0 mph | – |
| 3 p.m. | 30°F | 19°F | 66% | 12.4 mph | – |
| 6 p.m. | 27°F | 18°F | 69% | 11.3 mph | – |
| 9 p.m. | 26°F | 18°F | 72% | 11.3 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00004726. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for January in Johnstown?
The warmest January temperature on this station's record (since 2000) is 65°F, on January 8, 2008; the coldest is −14°F, on January 7, 2014. The wettest January brought 5.46 in (2005).
The January mean against the 1991-2020 normal of 26.3°F: 2021 27.1°F (+0.8), 2022 22.2°F (−4.1), 2023 34.6°F (+8.3), 2024 28.9°F (+2.6), 2025 20.1°F (−6.2), 2026 21.1°F (−5.2). 3 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 27.1°F | +0.8°F | 0.78 in |
| 2022 | 22.2°F | −4.1°F | 2.59 in |
| 2023 | 34.6°F | +8.3°F | 4.15 in |
| 2024 | 28.9°F | +2.6°F | 4.00 in |
| 2025 | 20.1°F | −6.2°F | 1.34 in |
| 2026 | 21.1°F | −5.2°F | 1.31 in |
Source: records: ACIS, station USW00004726; recent months: ACIS, station USW00004726. Records and recent months use complete months only.
How does January in Johnstown 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; Johnstown's is 33°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Johnstown in December38°F by day, 25°F at night
- Johnstown in February36°F by day, 21°F at night
- Johnstown 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