The Weather Wire

 

September 2005                                                                                                             Volume 13 Number 09

 

Contents

 

∑   Getting Ready

 

∑   Online Forecasts
 

∑   Drought Monitor

 

∑   August

    Summary

 

∑   August Stats

 

∑   September Preview

 

∑   Sunrise/Sunset

 

∑   Snow Totals

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

August 2005

 

Avg High 86.4

Avg Low 56.7

Snow - 0.0"

Season Snow - 0.0"

Precipitation - 1.34"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

September

Avg High 77.4

Avg Low 47.3

Avg Snow -  2.1"

Avg Precip - 1.14"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Skyview Weather 

2350 N Rocky View Rd

Castle Rock, CO 80108

 

Phone: (303) 688-9175

Fax: (303) 660-0548

 

E-mail:    

tim@skyview-wx.com

 

Weíre on the Web!

http://www.skyview-wx.com/

 

Copyright 2005

Skyview Weather

Getting Ready for Winter

September has some of the best weather Colorado has to offer.  Many days feature plenty of sunshine with little or no shower activity.  Temperatures are generally in the 80s with overnight lows getting a bit on the chilly side dropping into the 40s.  It is not unusual to have a frost or freeze before the end of the month, but typically the first frost or freeze waits until October.

What September is the perfect time to get ready for the coming cold and snow of winter.  A good time to get the car or truck, not to mention the home ready for heating season.  Last year was bad enough with the energy bill, sticker shock.  With energy even higher this year you can bet those bills will be even higher this year!

Even though we enjoy all this nice warm weather, it is a good idea to start winterizing the car or truck.  Have the anti-freeze check, have your tires checked, put the snow tires on.  Yes I know sounds early, but it does snow in September!  Check your supply of window deicer.  If you make long trips during the winter months, especially in the high country, put together a list of things to store in the trunk, such as a small shovel, flashlight, and small survival kit.  This is also a good month to have the oil changed and have a tune up.  You really donít want to have a breakdown in the middle of a snowstorm.  Think about putting a 50-75 pound bag of sand in the trunk.  Not only does it add weight and extra traction to the rear wheels, but should you become stuck, you have sand with you to get some extra traction.

Home heating is a big one for many people and there are many things you can do to reduce the amount of energy you use.  Again with all the nice weather in September, itís a good time to check the caulking around the windows, remove old and worn caulking and install new.  Check weather stripping around doors and windows, if it is worn replace it.  If it has been a while since you checked the insulation in the attic, itís more than time to check it.  Perhaps another couple inches of insulation will help shave some dollars off the heating bill.  Also this is a good time to check the furnace.  Make sure the filters are clean.  Dirty filters cut down on the efficiency of your heating system.  If it has been more than 2-3 years since a professional has checked your furnace perhaps you should consider bringing one in.  He can check the furnace to make sure it is operating at peak efficiency and check your duck work for leaks.

Windows leak more heat to the outside than any other part of the house.  If some are single pane, if the budget allows replace them with double pane glass.  Window coverings can play an important role in keeping the heat in the house especially on north facing windows.  Insulated drapes or window coverings can significantly reduce the amount of heat that passes through a window.  Even small things can help with household heating.  Open drapes on south and east facing windows to allow the sun to help heat the inside, while keeping sunless windows covered. 

There are many more things that can be done to save money on the gas or electric bill, the important thing is to get started on them now, before the cold weather hits in October and November.

Online Forecasts Available Again

Skyview Weather is happy to announce that online forecasts and snow reports are again available on our sister www.anythingweather.com website.  Forecasts and snow reports are password protected, but an email to Tim@Skyview-WX.com requesting your forecast and/or snow reports be available online will result in an account being setup for you.  As always, forecasts and snow reports are for client use only, but with the online access, forecasts and snow reports are just a click away from any computer with an internet connection!

Drought Update

Little change in drought conditions across most of Colorado, with few areas of drought remaining..

The map below shows forecasted temperature deviances for September 2005. As can be seen, normal  temperatures are expected for Colorado for September 2005.

The map below shows forecasted precipitation deviances for September 2005.  Normal or near normal precipitation is expected for Colorado for September 2005.

As can be seen in the below map, most of the state has come out of the widespread drought conditions of a year ago.

August Summary

August 2005 marked the 2nd month in a row with below normal precipitation. (However, this statistic is very misleading, with most areas across Metro Denver seeing well above average precipitation for August, and the "official" rain gauge at DIA being very unrepresentative and poorly located).  So far this years total through August 31st is 9.74 inches.  This compares with 11.33 inches through the same time frame last year.  There were 8 days with measurable rainfall.  Four of the measurable days occurred with thunderstorms.  There were also 6 other thunderstorm days that produced trace amounts or less.  No severe weather or hail was observed at DIA.

Nothing much to note about temperatures as the month finished near normal.  The average temperature was 71.6 degrees which is only 0.1 below normal.  The mercury readings ranged from a high of 97 degrees to a low of 50 degrees.  Two records were set in August 2005 and both were low maximum temperature records.  61 degrees on the 4th broke the old record of 66 degrees set in 1936.  Then on the 13th, a 63 degree high temperature was a new record low maximum, breaking the old record of 69 degrees set in 1938.  There were 13 days with readings 90 or above, with the normal being 9 and for the year there have be 46 90 degree days which is 16 above the normal of 30.

August Stats

TEMPERATURE (IN DEGREES F)

 

 

 

 

 

 

AVERAGE MAX

86.4

NORMAL

86.0

DEPARTURE

0.4

AVERAGE MIN

56.7

NORMAL

57.4

DEPARTURE

-0.7

MONTHLY MEAN

71.6

NORMAL

71.7

DEPARTURE

-0.1

HIGHEST

97 on the 2nd

LOWEST

48 on the 31st

 

 

 

 

 

 

DAYS WITH MAX 90 OR ABOVE

13

NORMAL

9

DAYS WITH MAX 32 OR BELOW

0

NORMAL

0

DAYS WITH MIN 32 OR BELOW

0

NORMAL

0

DAYS WITH MIN ZERO OR BELOW

0

NORMAL

0

 

 

 

 

 

 

TEMPERATURE RECORDS

 

   

 

 

 

 

 

 

HEATING DEGREE DAYS

 

 

 

 

 

 

MONTHLY TOTAL

19

NORMAL

9

DEPARTURE

10

SEASONAL TOTAL

22

NORMAL

10

DEPARTURE

12

 

 

 

 

 

 

COOLING DEGREE DAYS

 

 

 

 

 

 

MONTHLY TOTAL

230

NORMAL

217

DEPARTURE

13

YEARLY TOTAL

788

NORMAL

639

DEPARTURE

149

 

 

 

 

 

 

PRECIPITATION (IN INCHES)

 

 

 

 

 

 

MONTHLY TOTAL

1.34

NORMAL

1.82

DEPARTURE

-0.48

YEARLY TOTAL

9.74

NORMAL

12.07

DEPARTURE

-2.33

GREATEST IN 24 HOURS

0.87on the 3rd

DAYS WITH MEASURABLE PRECIPITATION

8

 

 

 

 

SNOWFALL (IN INCHES)

 

 

 

 

 

 

MONTHLY TOTAL

0.0

NORMAL

0.0

DEPARTURE

0.0

SEASONAL TOTAL

0.0

NORMAL

0.0

DEPARTURE

0.0

GREATEST IN 24 HOURS

0.0

GREATEST DEPTH

0.0

 

 

 

 

 

 

WIND (IN MILES PER HOUR)

 

 

 

 

 

 

AVERAGE SPEED

9.5

       

PEAK WIND GUST

43mph from Southwest on the27th

 

 

 

 

 

 

MISCELLANEOUS WEATHER

 

 

 

 

 

 

NUMBER OF DAYS WITH THUNDERSTORMS

10

NORMAL

 8

NUMBER OF DAYS WITH HEAVY FOG

5

NORMAL

 1

NUMBER OF DAYS WITH HAIL

0

 

 

PERCENT OF SUNSHINE

73

NORMAL

72

 

 

 

September Preview

September is normally a sunny, pleasant month in Denver with the highest monthly percentage of sunshine for the year.  The general weather pattern features fall-like weather consisting of bright sunny days and clear cool nights.

Summer can linger as late as the end of the month.  On September 30th 1980 a record was set when the temperatures reached a high of 90 degrees.  In fact, the first 20 days of September all have record highs in the 90s.  97 degrees stands as the hottest temperature ever recorded during September and that occurred 4 different times, with the last 2 occurrences recorded on September 1st and 4th in 1995.  Thunderstorms are still around in September, however, they are less frequent and severe storms are rare.

Winter can also sneak in during September.  The earliest measurable snowfall on record occurred on September 3rd in 1961 when 4 inches of snow fell at the old Stapleton Airport and the temperature dropped to 33 degrees.  The earliest freeze in Denver was September 8th in 1962 with a record low of 31 degrees.  A real taste of early winter came in 1985 when on the 29th, 9 inches of snow fell on the city and the mercury dropped to a low of 17 degrees after only reaching a high for the day of 29 degrees.  Both of those temperatures were records for the date.  Although we can see snow during the month of September there have been 79 Septembersí since 1882 that have reported no snow.

DENVER'S SEPTEMBER CLIMATOLOGICALLY NORMAL

(NORMAL PERIOD 1971-2000)

 

 

TEMPERATURE

 

 

 

AVERAGE HIGH

77.4

AVERAGE LOW

47.3

MONTHLY MEAN

62.4

DAYS WITH HIGH 90 OR ABOVE

2

DAYS WITH HIGH 32 OR BELOW

LT 1

DAYS WITH LOW 32 OR BELOW

1

DAYS WITH LOWS ZERO OR BELOW

0

 

 

PRECIPITATION

 

 

 

MONTHLY MEAN

1.14"

DAYS WITH MEASURABLE PRECIPITATION

6

AVERAGE SNOWFALL IN INCHES

2.1"

DAYS WITH 1.0 INCH OF SNOW OR MORE

LT 1

 

 

MISCELLANEOUS SEPTEMBER AVERAGES

 

 

 

HEATING DEGREE DAYS

136

COOLING DEGREE DAYS

57

WIND SPEED (MPH)

7.9

WIND DIRECTION

SOUTH

DAYS WITH THUNDERSTORMS

4

DAYS WITH DENSE FOG

1

PERCENT OF SUNSHINE POSSIBLE

74

 

 

SEPTEMBER EXTREMES

 

 

 

RECORD HIGH

97 DEGREES ON 9/4/1995

RECORD LOW

17 DEGREES ON 9/29/1985

WARMEST

63.8 DEGREES IN 1948

COLDEST

54.8 DEGREES IN 1912

WETTEST

4.67 INCHES IN 1961

DRIEST

TR INCHES 1944

SNOWIEST

17.2 INCHES IN 1936

LEAST SNOWIEST

None Ever Recorded

Sunrise/Sunset (Denver area)

     Date

Sunrise

Sunset

     September 1  

06:28

19:32

     September 5

06:31

19:25

     September 10

06:36

19:17

     September 15

06:41

19:09

     September 20

06:45

19:01

     September 25

06:50

18:53

     September 30

06:55

18:45

 Rainfall

May - August 2005

City

May

June

July

August Sept

Seasonal Totals

Aurora (Central)

0.83 3.35 0.63 2.99   7.80

Castle Rock 4 NE

0.73 1.48 1.16 2.48   5.85

Colorado Springs

0.73 2.10 1.94 2.65   7.42
Denver DIA 0.71 3.99 0.27 1.34   6.31

Denver Downtown

0.83 2.25 0.16 2.76   6.00

Golden

2.01 2.99 0.71 2.25   7.96

Highlands Ranch

0.75 1.38 1.06 1.77   4.96

Lakewood

0.95 2.01 0.99 2.21   6.16

Littleton

0.63 2.48 0.51 1.14   4.76

Louisville

1.38 1.62 0.71 2.25   5.96

Parker

0.83 1.58 0.24 2.99   5.64

Sedalia

0.75 1.69 0.20 3.78   6.42

Thornton

0.63 3.59 0.16 2.01   6.39

Westminster

0.63 1.54 0.24 1.81   4.22

Wheatridge

0.75 2.01 0.47 1.85   5.08