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Weather in Johnstown, Pennsylvania for May 2027

Your guide to Johnstown weather in May - trends and predictions

    Rain 🌧️

  • Johnstown in May brings notable rainfall, with an average of 20 rainy days and a total precipitation of 188 mm.

  • More

  • Is May a good time to visit Johnstown? check out the best time to travel to Johnstown page.

  • ✨ Is May a good time to visit Johnstown? – Ask the AI Weatherman

Average dry days
11
Dry days
Average rainy days
20
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/8°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Johnstown Weather May

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Temperatures trend during May in Johnstown

See the weather trend as well as the moving average line

May weather in Johnstown day by day

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Date Weather Temperatures Rain UV More
May 1 Light rain
Light rain
17° /5° 4.6 mm 4
May 2 Light rain
Light rain
15° /8° 4.9 mm 4
May 3 Light rain
Light rain
16° /6° 2.7 mm 6
May 4 Light rain
Light rain
18° /7° 4.4 mm 3
May 5 Light rain
Light rain
20° /12° 3.5 mm 4
May 6 Moderate rain at times
Moderate rain at times
15° /8° 5.6 mm 2
May 7 Patchy rain possible
Patchy rain possible
15° /7° 1.9 mm 6
May 8 Patchy rain possible
Patchy rain possible
16° /5° 1.9 mm 4
May 9 Light rain
Light rain
13° /6° 7.2 mm 3
May 10 Patchy rain possible
Patchy rain possible
16° /4° 1.6 mm 6
May 11 Sunny
Sunny
17° /7° 0 mm 8
May 12 Overcast
Overcast
20° /6° 0.4 mm 8
May 13 Moderate rain
Moderate rain
17° /10° 19.9 mm 3
May 14 Light rain
Light rain
13° /9° 2.9 mm 2
May 15 Patchy rain possible
Patchy rain possible
20° /10° 0.1 mm 7
May 16 Moderate or heavy rain shower
Moderate or heavy rain shower
23° /11° 5.1 mm 8
May 17 Light rain
Light rain
24° /14° 4 mm 3
May 18 Patchy rain possible
Patchy rain possible
24° /13° 0.9 mm 7
May 19 Patchy rain possible
Patchy rain possible
20° /12° 1.3 mm 7
May 20 Light rain
Light rain
20° /8° 9.3 mm 4
May 21 Moderate rain
Moderate rain
14° /9° 23.1 mm 2
May 22 Moderate rain
Moderate rain
13° /8° 19.4 mm 6
May 23 Heavy rain at times
Heavy rain at times
10° /7° 12.5 mm 2
May 24 Light rain
Light rain
16° /7° 5.7 mm 2
May 25 Light rain
Light rain
18° /9° 7.1 mm 4
May 26 Light rain
Light rain
21° /9° 3.5 mm 9
May 27 Heavy rain at times
Heavy rain at times
20° /12° 8 mm 4
May 28 Moderate rain
Moderate rain
15° /8° 10.1 mm 6
May 29 Fog
Fog
19° /8° 0 mm 7
May 30 Moderate rain
Moderate rain
19° /12° 16.4 mm 7
May 31 Thundery outbreaks possible
Thundery outbreaks possible
19° /8° 0 mm 7
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Important Notice
Our weather forecast for Johnstown in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Johnstown forecast closer to your planned date for the most up-to-date weather information.

Johnstown in May - FAQ

What are the expected maximum and minimum temperatures in Johnstown during May?

Enjoy moderate daytime temperatures of up to 17° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Johnstown during May?

Significant rainfall exceeding 188 mm is expected in Johnstown during May, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Johnstown during May?

The average wind speed in Johnstown during May is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Johnstown

Explore the daily rainfall trends and prepare for Johnstowns May weather 💧
Typically, Johnstown has 20 rainy days in May with a total of 188 mm of rainfall.

UV exposure in Johnstown during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Location coordinates Where is Johnstown?

Get accurate weather forecasts for Johnstown, located at latitude 40.327 and longitude -78.922. Stay updated with localized weather information tailored for Johnstown.

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