Fort Collins CSU temperature plot
Fort Collins Christman Field temperature plot
Fort Collins CSU weather home page
Fort Collins Christman Field home page
NWS Denver/Boulder area Mesonet observations
Tornadoes near Fort Collins in past years
All tornado reports 1950-2005
All tornado reports 1950-2014
All tornado reports within 25 miles (40km) of Fort Collins 1950-2005
Snow Climatology of Colorado
Northeast Colorado Area Snowfall Climatology
NWS Denver snow page
Radar image from Windsor/Greeley area tornado May 22, 2008. Image is from 1753z or 11:53AM MDT. Radar image is from FTG (Denver) radar. Approximate scale is 17 miles north to south
Case Study Web Page on the Windsor Tornado May 22, 2008 by CIRA/Colorado State
The Rainy Season of 2009
May 20th through May 31 featured 1.05" of rain and 7 days with 0.01" or more
The incredible June 2009
5.03" of rain (or melted hail) fell and 16 days with 0.01" or more
The temperature was over 2 degrees below normal
-This value of 5.03" of precipiation makes this the 6th wettest June in over 100 years of record keeping and this is 253% of normal
-There were 5 days with hail, the 7th, 10th, 11th, 15th, and 22nd
Mid-day of June 7, 2009 featured approximately 0.75" diameter hailstones and 1.07" of precipitation at Fort Collins/CSU.
Radar from June 7 2009 at 12:46PM MDT
Official Storm reports from June 7
The afternoon of June 15, 2009 featured a tornado warning, 0.74" of precipiation at Fort Collins/CSU and small hail, as well as constant nearby rumbles of thunder.
Official Storm reports from June 15
The evening of June 22, 2009 featured non-stop lightning and thunder, flooding rains and large hail (0.5" to 1.0") in north Fort Collins and Wellington. 0.83" of precipitation was recorded at Fort Collins/CSU, which did not cause much of a flash flood in the middle of town. There were two preliminary reports of tornadoes 4 miles west of Pierce (near Wellington).
Storm total precipitation from June 22, 2009 from some time between 11:00PM and 12 midnight. Note: The value of 5.8" is probably overestimated and may be in the range of 3 to 4".
Radar from June 22, 2009 at 10:22PM MDT
Official Storm reports from June 22
The Rainy July 2009
In July 2009, there was 3.95" of rain at Fort Collins
Hail occurred three times at the Fort Collins weather station, on the 1st, 20th, and 29th.
July 1: 0.42" and small hail at about 5:10PM
July 20: 2.10" and hail (1/2" to 1") at about 10:10PM to 11:00PM
Storm total precipiation from July 20th
July 20 radar at 10:09PM MDT
Storm Reports from July 20th
note:there was one report of 1.75" hail in Fort Collins
July 29: 0.64". about 0.31" and hail came at about 1:00AM, and lighter rain occurred at about 2:00PM
Average High/Low Temperatures
Fort Collins Monthly Climate Values
The purpose is to provide high quality information on historical storms
and provide links to weather information.