Blair County (Altoona)
May
Weather in Blair County, Pennsylvania for May 2026
Your guide to Blair County weather in May - trends and predictions
In general, the average temperature in Blair County at the beginning of May is 20.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.6 °F by the end of May.
Blair County experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 283 mm.
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Temperatures
Rain 🌧️
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9
Dry days
22
Rainy days
0
Snow days
18°/10°
Temperatures
16 km/h
Avg max wind
79 %
Avg humidity
Blair County Weather May
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Temperatures trend during May in Blair County
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May weather in Blair County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Moderate or heavy rain shower | 26° /9° | 24.4 mm | 6 | |
| May 2 |  Patchy rain possible | 24° /15° | 5.6 mm | 5 | |
| May 3 | Moderate or heavy rain shower | 21° /14° | 9.1 mm | 5 | |
| May 4 | Moderate or heavy rain shower | 17° /12° | 16.4 mm | 4 | |
| May 5 | Moderate or heavy rain shower | 19° /15° | 36.5 mm | 4 | |
| May 6 | Patchy rain possible | 15° /10° | 8 mm | 4 | |
| May 7 |  Cloudy | 19° /9° | 0 mm | 4 | |
| May 8 | Moderate or heavy rain shower | 19° /9° | 5.9 mm | 4 | |
| May 9 | Moderate rain at times | 12° /5° | 6.4 mm | 3 | |
| May 10 |  Partly cloudy | 21° /4° | 0 mm | 6 | |
| May 11 |  Sunny | 21° /8° | 0 mm | 6 | |
| May 12 | Cloudy | 23° /10° | 0.4 mm | 5 | |
| May 13 | Moderate or heavy rain shower | 18° /14° | 45.6 mm | 4 | |
| May 14 | Patchy rain possible | 17° /14° | 9 mm | 4 | |
| May 15 | Moderate rain at times | 23° /13° | 2.9 mm | 5 | |
| May 16 | Moderate or heavy rain shower | 26° /16° | 3.9 mm | 6 | |
| May 17 | Patchy rain possible | 24° /13° | 1.4 mm | 5 | |
| May 18 | Patchy rain possible | 17° /10° | 0.5 mm | 4 | |
| May 19 | Cloudy | 17° /8° | 0 mm | 4 | |
| May 20 |  Overcast | 16° /5° | 0 mm | 4 | |
| May 21 | Moderate or heavy rain shower | 11° /9° | 26.3 mm | 3 | |
| May 22 | Moderate or heavy rain shower | 12° /8° | 22.9 mm | 3 | |
| May 23 | Moderate rain at times | 12° /6° | 3.5 mm | 3 | |
| May 24 | Patchy rain possible | 13° /6° | 0.1 mm | 3 | |
| May 25 | Overcast | 17° /6° | 0 mm | 4 | |
| May 26 | Overcast | 19° /7° | 0 mm | 4 | |
| May 27 | Overcast | 17° /10° | 0 mm | 4 | |
| May 28 |  Moderate rain | 10° /8° | 30.8 mm | 3 | |
| May 29 |  Fog | 19° /9° | 2.3 mm | 4 | |
| May 30 | Moderate rain | 18° /13° | 19.2 mm | 4 | |
| May 31 | Overcast | 16° /9° | 1.9 mm | 4 | |
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Important Notice
Our weather forecast for Blair County 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 Blair County forecast closer to your planned date for the most up-to-date weather information.
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Blair County in May - FAQ
What are the expected maximum and minimum temperatures in Blair County during May?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Blair County during May?
Significant rainfall exceeding 283 mm is expected in Blair County during May, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Blair County during May?
The average wind speed in Blair County during May is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Blair County
Explore the daily rainfall trends and prepare for Blair Countys May weather 💧
UV exposure in Blair County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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