Johnstown weather in April: Johnstown, Pennsylvania: normal highs, lows, rain and records for April
Johnstown in April has a normal high of 58°F and a normal low of 38°F, a daily mean of 48°F, rising from 51°F on the 1st to 64°F by the 30th. Measurable precipitation falls on 14 days in a normal April, 3.54 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 14°C and low of 4°C, 90 mm of precipitation in April.
- 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 April?
The normal high is 58°F and the normal low 38°F, for a daily mean of 48.1°F. April is 11.7°F warmer than March and 10.4°F cooler than May. April is the 7th warmest month of the year in Johnstown and the 6th wettest. Across the month the normal high rises 13°F, from 51°F on April 1 to 64°F on April 30. From one year to the next April's mean temperature typically moves about 2.7°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 45°F and 51°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 |
|---|---|---|---|---|
| April 1 | 51°F | 33°F | 47% | 27% |
| April 8 | 55°F | 36°F | 47% | 28% |
| April 15 | 58°F | 38°F | 47% | 29% |
| April 22 | 61°F | 41°F | 48% | 30% |
| April 30 | 64°F | 44°F | 50% | 31% |
Every day of April: normal high, low and chance of precipitation (warmest afternoon April 30, coldest night April 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| April 1 | 51°F | 33°F | 47% | 27% | 12 h 40 min |
| April 2 | 52°F | 33°F | 47% | 27% | 12 h 40 min |
| April 3 | 52°F | 34°F | 47% | 27% | 12 h 40 min |
| April 4 | 53°F | 34°F | 47% | 27% | 12 h 50 min |
| April 5 | 53°F | 34°F | 47% | 27% | 12 h 50 min |
| April 6 | 54°F | 35°F | 47% | 27% | 12 h 50 min |
| April 7 | 54°F | 35°F | 47% | 28% | 12 h 50 min |
| April 8 | 55°F | 36°F | 47% | 28% | 13 h |
| April 9 | 55°F | 36°F | 47% | 28% | 13 h |
| April 10 | 56°F | 36°F | 47% | 28% | 13 h |
| April 11 | 56°F | 37°F | 47% | 28% | 13 h |
| April 12 | 56°F | 37°F | 47% | 28% | 13 h 10 min |
| April 13 | 57°F | 38°F | 47% | 29% | 13 h 10 min |
| April 14 | 57°F | 38°F | 47% | 29% | 13 h 10 min |
| April 15 | 58°F | 38°F | 47% | 29% | 13 h 10 min |
| April 16 | 58°F | 39°F | 47% | 29% | 13 h 20 min |
| April 17 | 59°F | 39°F | 47% | 29% | 13 h 20 min |
| April 18 | 59°F | 39°F | 48% | 29% | 13 h 20 min |
| April 19 | 60°F | 40°F | 48% | 29% | 13 h 20 min |
| April 20 | 60°F | 40°F | 48% | 30% | 13 h 30 min |
| April 21 | 61°F | 41°F | 48% | 30% | 13 h 30 min |
| April 22 | 61°F | 41°F | 48% | 30% | 13 h 30 min |
| April 23 | 61°F | 41°F | 49% | 30% | 13 h 30 min |
| April 24 | 62°F | 42°F | 49% | 30% | 13 h 40 min |
| April 25 | 62°F | 42°F | 49% | 31% | 13 h 40 min |
| April 26 | 63°F | 42°F | 49% | 31% | 13 h 40 min |
| April 27 | 63°F | 43°F | 49% | 31% | 13 h 40 min |
| April 28 | 63°F | 43°F | 50% | 31% | 13 h 50 min |
| April 29 | 64°F | 44°F | 50% | 31% | 13 h 50 min |
| April 30 | 64°F | 44°F | 50% | 31% | 13 h 50 min |
- Normal high
- 58°FApril average
- Normal low
- 38°FApril average
- Precipitation
- 3.54 inmonth total
- Days with precipitation
- 140.01 inch or more
- Nights at 32°F or colder
- 9
- Daylight
- 12 h 40 min to 13 h 50 minApril 1 to April 30
- Days at 70°F or more
- 5
- Days at 80°F or more
- 1
- Sunshine
- 66%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 April?
On a given April day the chance of 0.01 inch or more is 48% on average, highest around April 30 (50%). In all, 3.54 in falls on 14 days of a normal April.
In a normal April in Johnstown, 9 nights fall to freezing and 1 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00004726.
How humid and windy is Johnstown in April?
At 3 p.m. the normal temperature is 60°F with 47% relative humidity and a dew point of 40°F; at 6 a.m. it is 46°F with 74% humidity. The wind averages 9.4 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. | 46°F | 38°F | 74% | 7.6 mph | – |
| 9 a.m. | 52°F | 40°F | 64% | 9.7 mph | – |
| noon | 58°F | 40°F | 52% | 11.2 mph | – |
| 3 p.m. | 60°F | 40°F | 47% | 11.9 mph | – |
| 6 p.m. | 57°F | 39°F | 52% | 10.7 mph | – |
| 9 p.m. | 52°F | 39°F | 61% | 8.3 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 April in Johnstown?
The warmest April temperature on this station's record (since 2000) is 83°F, on April 27, 2009; the coldest is 14°F, on April 10, 2016. The wettest April brought 9.22 in (2024).
The April mean against the 1991-2020 normal of 48.1°F: 2021 48.0°F (−0.1), 2022 46.0°F (−2.1), 2023 51.3°F (+3.2), 2024 50.9°F (+2.8), 2025 50.5°F (+2.4), 2026 53.7°F (+5.6). 4 of 6 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 48.0°F | −0.1°F | 2.59 in |
| 2022 | 46.0°F | −2.1°F | 3.79 in |
| 2023 | 51.3°F | +3.2°F | 2.25 in |
| 2024 | 50.9°F | +2.8°F | 9.22 in |
| 2025 | 50.5°F | +2.4°F | 5.50 in |
| 2026 | 53.7°F | +5.6°F | 4.82 in |
Source: records: ACIS, station USW00004726; recent months: ACIS, station USW00004726. Records and recent months use complete months only.
How does April in Johnstown compare across Pennsylvania?
Across the 108 places PlainClimate covers in Pennsylvania, April normal highs run from 54°F in Laporte to 67°F in Schenley; Johnstown's is 58°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.