July 2021 Weather Summary

July was 0.4 deg F below normal for temperature. The high for the month was 91.8 deg. F recorded on July 7. The low for the month was 49.6 deg F, recorded on July 31. There was a single day at or above 90 deg F! There were 32 heating degree days and 224 cooling degree days.

July was a below normal month for precipitation with 3.08 inches of rainfall recorded, which was 0.38 inches below normal. The maximum rainfall in a single day was 0.69 inches recorded on July 7. There were 12 days of rain >.01 in, 7 >.10 in and 0 >1 in.

High wind speed of 43 mph on July 7.

July 2021 Data

Summary of Autumn 2020

Meteorological Autumn is officially over. Here is a brief summary of September 1-November 30 in Stormstown, PA:  

Number of days Max T >= 90 F: 0

Number of Days Max T <= 32 F: 0

Number of Days Min T <= 32 F: 10

Max T: 85.9 F – September 8, 2020

Min T: 22.0 F – November 19, 2020

Sep Dep from Normal: -0.4 F

Oct Dep from Normal: 1.0 F

Nov Dep from Normal: 3.7F

Heating Degree Days: 1176

Cooling Degree Days: 117

Sep Precip: 2.61″, 1.37″ below normal

Oct Precip: 2.96″, 0.38″ below normal

Nov Precip: 3.44″, 0.20″ above normal

The outlook for Winter 2020:

November 2020 Weather Summary

November was 3.7 deg F above normal for temperature. The high for the month was 76.0 deg. F, recorded on November 8. The low for the month was 22.0 deg F, recorded on November 19. There were 8 days at or below 32 F and 0 days when the maximum temperature was at or below 32 F. There were 593 heating degree days and 8 cooling degree days.

November was a above-normal month for precipitation with 3.44 inches of rainfall recorded, which was 0.20 inches above normal. The maximum rainfall in a single day was 1.24 inches recorded on November 11. There were 9 days of rain >.01 in, 8 >.10 in and 1 > 1 in.

High wind speed of 39 mph on November 1.

November 2020 Data

Outlook for December 2020

Measurement of the pH of Rain

Today, with precipitation in the forecast, I set up my mini-laboratory to measure the pH of the local rainfall in Stormstown, PA. First, I installed a standard rain gauge to collect rainwater.


I calibrated my pH meter, prior to taking any actual measurements, using standard reagents of pH of 4.0 and 6.86. I used a pH 7.0 reagent to verify.


After calibration, I waited for some rainfall and then collected my sample.


It had rained 0.20 inches over the past two days.


This was about 400 ml of liquid.


I measured the pH to be about 5.15, which is in the normal range for rainfall but still acidic. It is not considered to be acid rain.

pH Scale

Halfmoon Valley Rainfall

After the rainfall from yesterday and early this morning (1.10 inches), the annual precipitation is now at a surplus of 0.17 inches. Monthly precipitation has been below normal for January, February, March and April. May is not quite over, but the rainfall for the month is 1.74 inches above normal.
The outlook for the summer months of June, July and August indicates equal chances for a near normal amount of precipitation.