Daily Report for the month of September 2026

1 September Average and Extremes
Average temperature	80.4°F
Average humidity	77%
Average dewpoint	71.9°F
Average barometer	29.9 in.
Average windspeed	0.7 mph
Average gustspeed	1.7 mph
Average direction	241° (WSW)
Rainfall for month	0.91 in.
Rainfall for year	22.12 in.
Maximum rain per minute	0.06 in. on 01 at 23:00
Maximum temperature	94.9°F on 01 at 16:45
Minimum temperature	71.0°F on 01 at 23:50
Maximum humidity	90% on 01 at 00:00
Minimum humidity	55% on 01 at 16:48
Maximum pressure	30.039 in. on 01 at 22:58
Minimum pressure	29.862 in. on 01 at 17:54
Maximum windspeed	8.1 mph on 01 at 22:22
Maximum gust speed	12.7 mph from 151 °(SSE) on 01 at 22:22
Maximum heat index	110.8°F on 01 at 16:34

Click here to toggle the 24 Hour Graph of this day

2 September Average and Extremes
Average temperature	72.0°F
Average humidity	90%
Average dewpoint	68.9°F
Average barometer	30.0 in.
Average windspeed	0.6 mph
Average gustspeed	1.6 mph
Average direction	147° (SSE)
Rainfall for month	1.68 in.
Rainfall for year	22.89 in.
Maximum rain per minute	0.14 in. on 02 at 11:36
Maximum temperature	77.3°F on 02 at 17:18
Minimum temperature	68.4°F on 02 at 13:20
Maximum humidity	94% on 02 at 14:54
Minimum humidity	80% on 02 at 17:18
Maximum pressure	30.128 in. on 02 at 11:36
Minimum pressure	29.975 in. on 02 at 00:19
Maximum windspeed	9.2 mph on 02 at 11:36
Maximum gust speed	19.6 mph from 167 °(SSE) on 02 at 11:36
Maximum heat index	79.1°F on 02 at 17:18

Click here to toggle the 24 Hour Graph of this day

3 September Average and Extremes
Average temperature	77.0°F
Average humidity	81%
Average dewpoint	70.3°F
Average barometer	30.0 in.
Average windspeed	1.2 mph
Average gustspeed	2.8 mph
Average direction	250° (WSW)
Rainfall for month	1.98 in.
Rainfall for year	23.19 in.
Maximum rain per minute	0.01 in. on 03 at 23:35
Maximum temperature	88.1°F on 03 at 17:38
Minimum temperature	68.8°F on 03 at 06:45
Maximum humidity	93% on 03 at 09:11
Minimum humidity	61% on 03 at 14:53
Maximum pressure	30.059 in. on 03 at 05:47
Minimum pressure	29.867 in. on 03 at 17:02
Maximum windspeed	10.4 mph on 03 at 02:57
Maximum gust speed	17.3 mph from 085 °(E) on 03 at 02:57
Maximum heat index	98.1°F on 03 at 17:36

Click here to toggle the 24 Hour Graph of this day

Average and Extremes for Month of September 2026 up to day 3
Average temperature	76.5°F
Average humidity	83%
Average dewpoint	70.4°F
Average barometer	29.980 in.
Average windspeed	0.9 mph
Average gustspeed	2.0 mph
Average direction	216° (SW)
Rainfall for month	1.98 in.
Rainfall for year	23.37 in.
Maximum rain per minute	0.14 in on 02 at 11:36
Maximum temperature	94.9°F on 01 at 16:45
Minimum temperature	68.4°F on 02 at 13:20
Maximum humidity	94% on 02 at 14:54
Minimum humidity	55% on 01 at 16:48
Maximum pressure	30.13 in. on 02 at 11:36
Minimum pressure	29.86 in. on 01 at 17:54
Maximum windspeed	10.4 mph from 085°(E) on 03 at 02:57
Maximum gust speed	19.6 mph from 248°(WSW) on 02 at 11:36
Maximum heat index	110.8°F on 01 at 16:34
Avg daily max temp	86.8°F
Avg daily min temp	69.4°F
Growing degrees days	110.7 GDD

Day, Sunshine Hours, ET, Max Solar, UV
01 03:48hrs	ET :0.15 in.	898.0 W/m²	6.1 uv
02 01:00hrs	ET :0.07 in.	789.0 W/m²	4.4 uv
03 05:54hrs	ET :0.17 in.	844.0 W/m²	6.3 uv

Cumberland Valley Weather