A week of uncertainty coming up. Looks likely to be warm to hot, with occasional chances of showers or thunderstorms. However, the remains of Erika might provide some rain, which is again needed. Also there is the chance of a back-door cold front late in the week, which would reduce temperatures and sunshine. Time will tell, its the weather!
Looking at September -
September starts out at 81 degrees for the average high, and falls 11 degrees (compared to 4 in August) to 70 degrees by the end of the month. The average low starts at 62, and falls 12 degrees to 50 by the end of the month.
The record high is 102 in 1953, the record low is 30 in 1963.
The average precipitation is 3.65", about 0.91" per week needed to provide that.
The wettest September was 18.43" in 2011, remember the flooding?
The driest September was only 0.65" in 1986.
Looking back at July -
The average of the high and low came in at 0.2 degrees above average. The average high was 84.6, the average low was 67.5.
The highest temperature was 93 on the 19th, one of the total of 4 days 90 or above. The lowest temperature was 58 degrees on the 16th.
Cooling degree days were 348, only 10 above average. YTD is 783, 167 above normal.
Precipitation was 2.69", only 58% of the 4.61" average. Greatest 24 hour amount was 1.06" on the 14th.
There were 3 clear days, with 6 cloudy days, at least better than June!
Information from the NWS Harrisburg preliminary monthly data.