National Weather Service State College, PA Weather Impact Matrix for York County Decision Support Valid: 06/24/2025 08 AM - 06/24/2025 08 PM EDT

Tue 06/24 8 AM Tue 06/24 9 AM Tue 06/24 10 AM Tue 06/24 11 AM Tue 06/24 12 PM Tue 06/24 1 PM Tue 06/24 2 PM Tue 06/24 3 PM Tue 06/24 4 PM Tue 06/24 5 PM Tue 06/24 6 PM Tue 06/24 7 PM Tue 06/24 8 PM Temperature 81°F 84°F 87°F 89°F 91°F 92°F 94°F 95°F 96°F 96°F 93°F 92°F 90°F Heat Index 86°F 91°F 94°F 97°F 100°F 101°F 102°F 104°F 106°F 106°F 102°F 101°F 98°F Wind Speed 2 mph 2 mph 2 mph 3 mph 3 mph 4 mph 4 mph 4 mph 4 mph 4 mph 4 mph 3 mph 3 mph Wind Direction W NW NW NW NW NW NW NW W NW NW W NW Wind Gust 5 mph 5 mph 5 mph 8 mph 8 mph 9 mph 10 mph 10 mph 10 mph 10 mph 10 mph 8 mph 8 mph Chance of Precipitation 0% 1% 2% 3% 5% 6% 4% 4% 4% 4% 4% 4% 3% Weather None None None None None None None None None None None None None Sky Cover 3% 6% 9% 20% 21% 21% 22% 19% 16% 13% 14% 15% 16% Relative Humidity 79% 71% 64% 59% 56% 53% 49% 48% 47% 47% 52% 54% 57% Rainfall 0.0 in 0.0 in 0.0 in 0.0 in 0.0 in 0.0 in 0.0 in 0.0 in 0.0 in 0.0 in 0.0 in 0.0 in 0.0 in Issued: Monday June 23, 2025 08:04 PM EDT

Threat Level	None	Limited	Elevated	Significant	Extreme
Temperature	≤80 °F	80 to 89 °F	90 to 94 °F	95 to 99 °F	≥100 °F
Heat Index	≤80 °F	80 to 89 °F	90 to 94 °F	95 to 99 °F	≥100 °F
Wind Speed	≤10 mph	10 to 14 mph	15 to 24 mph	25 to 34 mph	≥35 mph
Wind Gust	≤15 mph	15 to 24 mph	25 to 34 mph	35 to 44 mph	≥45 mph
Chance of Precipitation	≤15 %	15 to 24 %	25 to 54 %	55 to 74 %	≥75 %
Relative Humidity	≥15 %	15 to 21 %	20 to 31 %	30 to 41 %	≤40 %
Rainfall	≤0.1 in	0.1 to 0.24 in	0.25 to 0.49 in	0.5 to 0.99 in	≥1.0 in

Note -

Grey color indicates no thresholds assigned