Johnstown in Spring

In spring (March, April and May), Johnstown sees average daytime highs around 56°F and overnight lows near 39°F, with 14.2 in of precipitation over about 44 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.

Over the season highs climb from about 41°F in early March to 70°F by late May. The sky is clear or mostly clear about 21% of the time across spring, and the air most often feels dry.

Spring is Johnstown's 3rd-best season to visit on our travel score. For the whole year in context, see Johnstown's year-round climate.

Avg daytime high: 56°F; 3rd-warmest season
Avg overnight low: 39°F
Precipitation: 14.2 in; 44 wet days
Avg wind: 8 mph
Travel score: 3.3; 3rd-best season
Months: Mar · Apr · May

← Winter Johnstown year-round climate Summer →

Spring Summer Fall Winter

Temperature in Johnstown in Spring

Average highAverage lowShaded bands: 10–90% of days

Over the season highs climb from about 41°F in early March to 70°F by late May.

A typical spring day in Johnstown reaches about 56°F and drops to 39°F overnight. The warmest of the three months is May, the coolest March.

How spring really feels in Johnstown

Once humidity and wind are folded in, spring brings about 0 days that feel above 90°F and 41 that feel at or below 32°F.

Days feeling ≥ 90°F

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

The story in spring is cold — wind chill drags the overnight "feels like" below the raw low.

Johnstown weather by month

How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	34° / 20°	3.7	14.4	10.9	9.5	0.0
Feb	36° / 21°	3.4	12.4	9.1	10.4	0.0
Mar	45° / 29°	4.4	14.1	6.4	11.7	0.9
Apr	58° / 39°	4.7	14.6	2.4	13	3.7
May	67° / 49°	5.0	15.4	0	14.2	5.3
Jun	74° / 58°	4.8	14.2	0	14.8	6.1
Jul	78° / 62°	4.1	14.1	0	14.6	6.2
Aug	77° / 60°	3.5	12.3	0	13.6	6.5
Sep	71° / 53°	3.9	10.8	0	12.3	6.5
Oct	59° / 42°	3.7	11.4	0.8	10.9	4.5
Nov	47° / 33°	3.5	11.5	3.5	9.8	1.6
Dec	38° / 25°	3.9	13.3	7.6	9.2	0.0

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time across spring.

Chance of precipitation in Spring

Any precipitationSnow

Johnstown gets around 14.2 in of rain and snow over 44 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

Wind in Spring

Winds average 8 mph across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 11 hours in early March to 14 h 36 min by late May. The lit band spans sunrise to sunset each day.

Solar energy in Spring

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across spring, about 4.8 kWh/m².

Planning a trip in spring

Is spring a good time to visit Johnstown?

Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

3.3

Sightseeing

3rd-best month of the year

0.9

Beach & pool

3rd-best month of the year

spring is a weaker month for outdoor sightseeing in Johnstown.

What to pack for Johnstown in Spring

From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In spring, Johnstown sees daytime highs around 56°F and nights near 39°F. Pack a warm layer, a heavy coat and rain gear. Worth having: sun protection. About 44 days see rain.

a warm layera heavy coatrain gearsun protection

UV index in Johnstown in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Johnstown peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	2	3	5	6	8	9	9	7	6	3	2	2
Level	Low	Moderate	Moderate	High	Very high	Very high	Very high	Very high	High	Moderate	Moderate	Low

	UV index (midday)	Level
Jan	2	Low
Feb	3	Moderate
Mar	5	Moderate
Apr	6	High
May	8	Very high
Jun	9	Very high
Jul	9	Very high
Aug	7	Very high
Sep	6	High
Oct	3	Moderate
Nov	2	Moderate
Dec	2	Low

Air quality in Johnstown in Spring

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.

Air quality in Johnstown is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	9	11	11	12	14	16	16	14	11	8	7	8
Level	Good	Good	Good	Good	Moderate	Moderate	Moderate	Moderate	Good	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	9	Good
Feb	11	Good
Mar	11	Good
Apr	12	Good
May	14	Moderate
Jun	16	Moderate
Jul	16	Moderate
Aug	14	Moderate
Sep	11	Good
Oct	8	Good
Nov	7	Good
Dec	8	Good

Location & terrain

Where is Johnstown?

Johnstown sits at 40.3°N, 78.9°W, 1,168 ft above sea level, in United States. The nearest listed city is Altoona, 30 mi away.

Topography around Johnstown

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Johnstown.

Within 2 miles, the terrain around Johnstown has significant variations in elevation — a maximum elevation change of 837 ft around an average of 1,493 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,831 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,641 ft.

The land around Johnstown is covered by trees (66%) and artificial surfaces (20%) within 2 miles, trees (79%) within 10 miles, and trees (77%) within 50 miles.

2 miles

837 ft

trees 66%

10 miles

1,831 ft

trees 79%

50 miles

2,641 ft

trees 77%

treesgrasslandcroplandartificial surfacesbare terrainwater

← Winter Johnstown year-round climate Summer →

Spring weather nearby: Altoona 30 mi · Murrysville 42 mi · Plum 45 mi · Monroeville 46 mi · Cumberland 47 mi · McKeesport 50 mi · Penn Hills 50 mi · West Mifflin 50 mi

United States travel facts

Power plugs: Type A / B; 120 V · 60 Hz
Prices: ≈ 100% of US; price level, 2025
GDP per capita: $90,027; 2025
Happiness: 6.8 / 10; World Happiness, 2025
Safe drinking water: 98%; of population, 2024
Homicide rate: 5.8; per 100k, 2023
Road deaths: 12.7; per 100k/yr, 2019
Income group: High; World Bank
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Johnstown (40.3267°, -78.922°, elevation 1,168 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.