2010 Climate Summary

 

2010: A Year in Review
After much above normal annual precipitation in 2008 and 2009, 2010 came in as the 31st driest on record at Indianapolis and the driest since 1999. This included an abnormal and historic dry period across central Indiana stretching from late July into November. Many locations across the region received less than three inches of rainfall during this period. 
 
Above normal temperatures were experienced through the spring and summer, and helped to make the average temperatures through the end of November the 4th warmest on record at Indianapolis. The temperature reached 80 degrees on 131 days in Indianapolis, matching 2007 for the most 80 degree days in a calendar year on record. Despite a much colder than average December, 2010 will go down as tied for the 12th warmest on record with an average temperature of 54.7 degrees. Records began for Indianapolis in 1871.
 
Central Indiana saw a little bit of everything in 2010, from record heat, to an expansive drought, to one of the wettest Junes on record. There was even a rare earthquake in Howard County on December 30th to cap an interesting weather year in the Hoosier state. The following information will represent a very comprehensive look back on the year that was. The information is arranged in this order:
 
Annual and Seasonal Conditions
Miscellaneous Weather Stats
Records Broken
Links to Top Weather Stories of 2010
 
 
Annual and Seasonal Climate Stats for Indianapolis
 
For the whole year
 

 
Average Temperature
Total Precipitation
Total Snowfall
Highs of 80/90 or hotter
Lows of 0 or colder
2010
54.7
33.85
41.9
131/37
0
NORMAL
52.6
40.95
26.9
97/21
7
2010 Difference from Normal
+2.1
-7.10
+15.0
+34/+16
-7
All-Time Rank
12th   Warmest
31th Driest
8th   Snowiest
 
 

 
***Note, for purposes of the above table, snowfall is referring to the calendar year period, from Jan 1 to Dec 31.
 
 
 
Actual Numbers and Difference from Normal
 
2009-10 WINTER SEASON SUMMARY
 

 
Average Temperature
Total Precipitation
Total Snowfall
Highs below Freezing
Lows Below Zero
Winter 2009-2010
27.3
5.49
33.0
34
0
Normal Winter
29.8
7.92
21.8
27
6
2009-2010
Difference from Normal
 
-2.5
 
-2.43
 
+11.2
 
+7
 
-6

 
Winter Ranks:
Tied 30th Coldest
25th Driest
7th Snowiest
 
 
 
2010 SPRING SEASON SUMMARY
 
Average Temperature
Total Precipitation
Total Snowfall
Highs of 80 or more
Lows Below Freezing
Spring 2010
57.1
10.49
0.0
18
10
Normal Spring
52.1
11.41
3.5
11
22
2010 Difference from Normal
 
 +5.0
 
-0.92
 
-3.5
 
+7
 
-12

 

 

 

 

Spring Ranks:
2nd Warmest
76th Driest
Least Snowy Spring on Record
 
 
2010 SUMMER SEASON SUMMARY

 
Average Temperature
Total Precipitation
Highs of 90 or more
Summer 2010
78.1
12.97
32
Normal Summer
73.5
12.37
15
2010 Difference from Normal
+4.6
+0.60
+17

 
Summer Ranks:
4th Warmest
45th Wettest
 
 
 
2010 FALL SEASON SUMMARY
 

 
Average Temperature
Total Precipitation
Total Snowfall
Highs of 80 or more
Fall 2010
57.8
6.34
T
28
Normal Fall
54.6
9.25
1.7
15
2010 Difference from Normal
+3.2
-2.91
-1.7
+13

 
Fall Ranks:
14th Warmest
33rd Driest
 
 
 
WINTER 2010-2011 SUMMARY SO FAR
 

 
Average Temperature
Total Precipitation
Total Snowfall
Highs of 32 or colder
December 2010
25.4
1.86
16.6
18
Normal December
31.6
3.03
6.4
8
2010 Difference From Normal
-6.2
-1.17
+10.2
+10

 
December 2010 Ranks:
Tied for 19th Coldest
35th Driest
3rd Snowiest
 
 
 
 
Miscellaneous Information for 2010
 
Date of Final Spring Frost:    April 28 
Date of Final Measurable Spring Snow:   February 27 (0.3”)
 
Date of First Fall Frost:         October 22
Date of First Measurable Fall Snow:   December 1 (0.2”)
 
Hottest High Temperature:   98 (August 11)
Coldest Low Temperature:   1 (January 3 and December 15)   
 
Coldest High Temperature:      18 (January 2)
Warmest Low Temperature:    78 (July 23 and August 10)
 
Heaviest Daily Rainfall:        1.95 (June 21)    
Heaviest Daily Snowfall:        6.3 (February 15)
 
Wettest 7 day period:            4.67 (June 18-24)
 
Most Consecutive days with temperatures below freezing:   12 (January 1-12 and February 6-17)
Most Consecutive days with highs of 90 or hotter:   7 (June 23-26)          
 
Most Consecutive days with precipitation: 7 (August 9-15)
Most Consecutive days with no precipitation: 9 (October 4-12)
 
 
 
Records Broken
 

Date
Record Type
New Record Amount
Old Record Amount
Old Record Year
January 7
Snowfall
4.1
3.4
1996
February 5
Snowfall
5.3
3.6
1908
February 15
Snowfall
6.3
5.8
1964
April 1
Max Temperature
82
81
1963
April 2
Max Temperature
81
80
1967 and 1963
April 6
Max Temperature
83
82
1929
June 21
Precipitation
1.95
1.42
1960
July 23
Warmest Min - TIE
78
78
1933
August 10
Warmest Min - TIE
78
78
1896
August 15
Max Temperature - TIE
96
96
1988
September 21
Max Temperature
96
93
1955
September 23
Max Temperature
94
90
2007
October 10
Max Temperature
88
84
1938
October 11
Max Temperature - TIE
86
86
1928
December 12
Snowfall
4.1
3.5
1898

 
 
 
 
Top Weather Stories of 2010
 
January 7-8 Snow Storm
 
February 5-6 Snow Storm
 
February 15 Snow Storm
 
April 5 – Severe Thunderstorms Produce Large Hail
 
June 6 – Carroll County Tornadoes
 
June 12-22 – Multiple Rounds of Severe Weather Hit Central Indiana
 
July 20 – Johnson County Tornado
 
Mid August - Longest Hot Spell in 22 Years
 
The Hot and Humid Summer of 2010
 
The Late Summer/Fall Drought
 
October 26 Severe Weather
 
December 12-13 Snow Storm
 
First White Christmas For Much Of Central Indiana Since 2004
 
A Cold, Snowy December for Central Indiana
 
December 30 – Minor Earthquake in Howard County
 
 
 
 
Data prepared by the Indianapolis NWS Climate Team


Return to News Archive

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.