June 2010
          June was hotter than average by 4.6  F and 3.2  F less than June last year as the monthly mean temperature was 76.9  F, 
and was below average in precipitation (when compared to Ashland, Virginia records). 
The 2.70 inches of precipitation for June was a -0.78 inch departure when compared to the Ashland, VA average. 
         There were 12 days in June with maximum temperatures of 90  F. 
 The maximum precipitation recorded in a day was 1.10 inches on the 28th when 0.33 inches fell in five minutes which was 
the most intense precipitation since July 29, 2010 when 0.35 inches fell in 5 minutes. 
Thunder was heard on eight days during June but none of the storms were severe. The maximum temperature for June was 98  F on the 9th. 
            The Richmond International Airport also had 98  F on the 9th tying the record for the date. 
They also tied the record high minimum temperature of 74  F on the 22nd. 
The highest minimum temperature recorded here for the month was 75  F on June 23rd.  
The Richmond International Airport reported the mean temperature for June of 78.0  F which tied for the 8th warmest since records 
started in 1880 as both 1880 and 1994 also had a mean temperature of 78.0  F.
   In the precipitation records from 1887 to 2011 the 3.03 inches was the 48th most rain in the past 125 years. 
Glen Allen also had 10 days that the minimum temperature was 70  F or higher. 
The lowest dew point temperature for June was 41.3  F on the 3rd at 1229 and the highest dew point was 77.0  F on the 1st at 1539. 
          The maximum wind for June came from the NNE on June 13 at 0739. 
June was a little clearer and windier than average and the average relative humidity was about normal.  

      July was extremely hot again this year.
 The Richmond International Airport had a mean monthly average of 82.1  F which was only 0.7  F less than last year 
which was the hottest July since temperature records were started in 1880.  
The July mean average temperature here was 81.5  F a +5.1  F departure when compared to Ashland’s average. 
July’s mean was only 0.5  F less this year when compared to last July.  
The 3.69 inches of rainfall for July at Glen Allen was a -0.66 inch departure when compared to Ashland’s average.
 The Richmond International Airport had 3.63 inches and was the 47th driest from 1887 to 2011.
         July had 9 days with measurable rain with 1.71 inches or 46% of the month’s rainfall occurring on the 8th. 
The Richmond International Airport had 1.72 inches on the 8th which is now a new daily record amount there. 
      At Glen Allen July had 22 days with 90 F or above temperatures the same as last year. 
The maximum temperature for July was 102  F recorded on July 22nd which is the second highest maximum 
temperature ever recorded here.
 But with the high relative humidity the heat index hit 117.6  F at 1358; this was higher than any reading last year. 
The Airport had 103  F on the 29th which set a daily maximum temperature record for the date. 
They also set three daily high minimum temperature records on the 12th, 22nd, and 30th.  
 The minimum temperature on the 12th was 81  F which makes it the warmest night ever recorded for Richmond, Virginia. 
On 20 nights the minimum temperature was 70  F or higher at the Airport.
      A wind gust of 35 mph on the 3rd is thought to be the strongest wind gust recorded for July that occurred in a thunderstorm 
in which lightning hit within 50 feet of my weather station and destroyed the anemometer. 
The other equipment damaged was a Davis transmitter module #6152 which included the sun, rain, wind, temperature and relative humidity. 
The wireless leaf and soil moisture/temperature transmitter #6345 and both leaf wetness sensors, solar radiation sensor,   
temperature/relative humidity sensor, intercom system were destroyed. It also damaged two thermometers that monitored 
soil temperature and leaf wetness sensor temperature. I have attached an image of the tree that was hit.  
As of July 30th the Glen Allen Weather Station is back to full operation.

           August was warmer than average as the monthly mean temperature was 78.5  F, a +1.0  F 
mean temperature departure based on the new normals, and was wetter than average when compared to Ashland, Virginia records.  
The 6.65 inches of rain for August was a +1.52 inch departure when compared to the Ashland, VA 
average and the wettest month since December 2009. 
It was very dry before the rain of the 14th with only 0.64 inches of rain occurring between 
July 9th and August 12 a period of more than a month. 
But with Irene it was also the wettest August in the past four years. 
The maximum rainfall recorded in a day was 3.75 inches on the 27th which was 56 percent of the 
month’s rainfall and measurable precipitation occurred on nine days.      
The maximum temperature for August was 97  F on the 7th. 
On thirteen days the maximum temperature was greater than or equal to 90  F.  
The lowest minimum was 57  F recorded on the 23rd. 
The maximum wind gust was 52 mph from the north that occurred on the 27th at 1753 hrs. 
(Also a new record for Glen Allen, VA) 
The Richmond International Airport had a gust to 71 mph during Hurricane Irene. 
Irene set a maximum precipitation record for West Henrico Co. – Glen Allen Virginia for a 24 hour period of 
3.85 inches and 3.75 inches in a calendar day. 
Irene set a new wind run record of 284.1 miles on the 27th. (Glen Allen Station records since August of 2008)   
 Irene also gave the lowest barometer since April 26, 2010 of 29.20 inches on the 27th.  
We also experienced a 5.8 magnitude earthquake on the 23rd at 1351 that was the strongest in 114 years. 
On May 5, 1897 Giles Co. was estimated to have had an earthquake of 5.8 magnitude. 
We were also awakened on the 25th at 0107 by a 4.5 magnitude quake as it rattled the metal pulls on the chest of drawers.
     The Richmond International Airport had 7.10 inches of rain for August the 25th wettest August in the past 125 years. 
It was also the largest daily rain since August 30, 2004 when 6.68 inches was recorded. 
The Airport had an August mean temperature of 79.0  F which was the 16th hottest August in the past 125 years.  
They set only two records for the date. On Aug. 1st 99  F tied for the highest maximum temperature and 
the 5.36 inches of rain on the 27th set a new record of rainfall for the date.

 	 	 	 		  	 
	NEW	Glen		NEW	Glen
	Ashland	Allen	Temp.	Ashland	 Allen	Precip.
 	Mean	Mean	Depart.	Precip.	Total	Depart.
	 Temp.	Degrees	   F	Average	Precip	Inches

June 	74.9 	76.9 	2.0 	3.48 	2.70 	0.49
July 	79.0 	81.5 	2.5 	4.00 	3.69 	-0.66
Aug. 	77.5 	79.4 	1.9 	5.13 	6.65 	1.31
SUM 	231.4 	237.86 	6.46 	12.61 	13.04 	1.14
AVE. 	77.13	79.29	2.15	4.20	4.35	0.38

The summer season was 2.2  F warmer when compared to Ashland’s averages and the rainfall was +0.38 inches above the average.

September was warmer and much wetter than average as the monthly mean temperature was 72.2  F, 
a 0.4  F departure based on my three year average and a +1.9  F departure when compared to Ashland, Virginia 
(new thirty year average).
The maximum temperature for September was 89  F on the 4th and 14th; the lowest minimum was 47  F recorded on the 16th.  
The Richmond International Airport mean temperature was 72.5 which was the 25th warmest September since 1897.  
But on the 17th the Airport had a high of only 61  F which was a new record low maximum temperature for the date 
and a daily range of only 4  F which tied the record for the lowest daily temperature range. 
 The two previous records were 62  F in 1924 and a 4  F daily temperature range in 1957 and 1938.
The main event of the month occurred from the 6th to the 8th.
The remnants of Lee gave record rainfall amounts and many places received more rain than Glen Allen.
The 6.51 inches of precipitation for September at Glen Allen was a departure of +2.58 inch departure when compared to the Ashland, 
VA average and a new record rainfall amount for September.
 It was also the wettest month since December of 2009 at Glen Allen.  
The maximum precipitation recorded in a day here was 2.27 inches on the 7th.  
September had measurable precipitation on twelve days but 17 days when counting trace amounts 
and was the second cloudiest month on record at Glen Allen. 
The cloudiness caused the daily temperature to be the lowest on record for the month. 
The cloudiness contributed to the highest average relative humidity and highest minimum temperatures on record for this station.
(Records since August of 2008)
The Richmond International Airport had 3.76 inches on the 7th a new record rainfall amount for the date 
(previous record was 2.15 in 1934) and 8.95 inches for the month which is the 9th greatest rainfall total for September since 1887.
September was cloudier than average and the average relative humidity was 77.2% which was 13.7 % more than last September. 
 After the only cool period just after mid-September, that lasted four days, 
Glen Allen had an exceptionally cloudy showery and muggy weather pattern that lasted until the end of the month.
  

There were two main events in October both of which had little effect on the West Henrico Co. – Glen Allen area.  
The thunderstorms on October 13th produced three tornadoes in Quantico in Prince William County, in Boswell Tavern in Louisa County, 
and the Lakewood area in New Kent County, VA. 
 The storm gave this station only 0.46 inches of rain and one very close lightning strike.
        On the 29th a strong storm system moving up the East Coast (affecting ten states) dumped more than two feet of snow in NH 
and left more than 3 million homes and businesses without power and caused at least twenty deaths.  
October was cooler and drier than average at the Glen Allen Station when compared to the Ashland Station. 
The monthly mean temperature was 58.6  F, a -0.8  F departure when compared to the Ashland, VA average. 
The 3.32 inches of precipitation for October at Glen Allen was a -0.15 inch departure when compared to the Ashland, VA average.  
The maximum temperature for October was 81  F and the lowest minimum temperature was 29  F recorded on October 30. 
The cold was really felt as it was near 80  F on the 25th. 
There were two frosts in October and both were heavy and killing on the 30th and 31st. 
The Richmond data base recorded three records this month.
 The low maximum temperature of 45  F recorded on the 29th as a record low maximum for the date; previous record was 46  F in 1925. 
On October 12th the minimum temperature tied the previous record of 65  F set in 1983.
 The maximum on the 12th was 68  F giving a daily temperature range of 3  the lowest range ever recorded on that date. 
The previous record was 8  F set in 1985 and 1942.  
It was the 58th warmest and the 59th wettest October in the Richmond records.
The highest dew point temperature for October was 72  F on the 13th at 1430 that made it feel like a summer's day.  
The lowest dew point was 26.1  F on the 30th at 1536.  
The maximum wind gust was 34 mph from the SSW that occurred on the 20th at 1057 preceding a cold front.  

November was warmest on record (records since 2008) as the monthly mean temperature was 53.23  F, 
a +4.2  F mean temperature departure when compared with Glen Allen’s three year average. 
November precipitation was 3.50 inches or a little drier than average when compared to Ashland, Virginia records. 
November had a -0.15 inch departure when compared to Ashland, Virginia.
 Measurable precipitation occurred on only seven days and was the second clearest November on record. 
The clear weather of November gave the highest daily average temperature range in the past four years of 23.9  F.
   The maximum temperature for November was 76  F on the 14th.
 The lowest minimum was 26  F recorded on the 18th and there were five days with less than or equal to 32  F 
but the first killing frost came on October 30th this year.
 The lowest dew point temperature was on the 18th at 15.9  F.   The maximum wind gust was 35 mph 
from the SSW that occurred on the 27th at 1231 hrs.  
     The highest barometer recorded for the month was 30.52 inches on the 6th and 18th.
      Richmond had 4.18 inches of rain the 28th wettest November of the past 114 years and the 2.47 inches on the 16th
 was the 8th largest daily precipitation since 1887 for November. 
The Airport had a mean temperature of 53.5  F which was the 8th warmest November of the past 114 years.  
No daily records were set for Richmond during November.
   

FALL	Ashland	Glen Allen		Ashland	Glen Allen	 
Season	Mean	Mean	Temp.	Precip.	Total	Precip.
 	 Temperature	Temp.	Depart.   F  	Average	Precip	Depart. 
Sep.	70.3	72.2	1.9	3.93	6.51	2.58
Oct.	59.4	58.6	-0.8	3.47	3.32	-0.15
Nov.	49.9	53.2	3.3	3.65	3.50	-0.15
SUM	179.6	184.1	4.4	11.05	13.33	2.28
AVE.	59.9	61.4	1.5	3.68	4.44	0.76
						
The fall season was 1.5  F warmer when compared to Ashland’s averages and the rainfall was +0.76 inches above the average.