National Weather Service State College, PA Weather Impact Matrix for Northumberland County Decision Support Valid: 09/30/2025 08 AM - 09/30/2025 08 PM EDT

Tue 09/30 8 AM Tue 09/30 9 AM Tue 09/30 10 AM Tue 09/30 11 AM Tue 09/30 12 PM Tue 09/30 1 PM Tue 09/30 2 PM Tue 09/30 3 PM Tue 09/30 4 PM Tue 09/30 5 PM Tue 09/30 6 PM Tue 09/30 7 PM Tue 09/30 8 PM Temperature 57°F 61°F 67°F 71°F 74°F 77°F 79°F 79°F 80°F 79°F 77°F 75°F 70°F Heat Index 57°F 61°F 67°F 71°F 74°F 78°F 79°F 80°F 80°F 79°F 78°F 75°F 70°F Wind Speed 2 mph 2 mph 2 mph 3 mph 5 mph 5 mph 6 mph 6 mph 8 mph 8 mph 8 mph 8 mph 6 mph Wind Direction N N NE N N N N N N N N N N Wind Gust 5 mph 6 mph 9 mph 10 mph 11 mph 12 mph 13 mph 14 mph 16 mph 17 mph 17 mph 18 mph 18 mph Chance of Precipitation 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% Weather None None None None None None None None None None None None None Sky Cover 88% 85% 82% 79% 77% 74% 71% 57% 54% 34% 47% 48% 34% Relative Humidity 93% 83% 65% 57% 50% 45% 41% 40% 39% 40% 43% 46% 56% 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 September 29, 2025 08:13 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