National Weather Service United States Department of Commerce

Below are some St. Patrick's Day climate statistics for La Crosse, WI and Rochester, MN and weather history for northeast Iowa, southeast Minnesota, and western Wisconsin.

La Crosse, WI:

The following statistics comprises 146 years of data. From 1873 through 1950, the data came from various locations in downtown La Crosse. Since 1950, the data has been gathered at La Crosse Regional Airport.

St. Patrick's Day in La Crosse, WI
(Period of Record 1873-2017)

1981-2010 Normal
Records
Maximum Temperature

44°F

Warmest High Temperature
83°F
March 17, 2012
Coldest High Temperature
10°F
March 17, 1941
Minimum Temperature
26°F
 
Warmest Low Temperature
62°F
March 17, 2012
Coldest Low Temperature
-7°F
March 17, 1941
Average Temperature
35°F
 
Warmest Average Temperature
72.5°F
March 17, 2012
Coldest Average Temperature
1.5°F
March 17, 1941
Precipitation
0.07"
Wettest
1.02"
March 17, 1966
Snowfall
0.3"
Snowiest
8.4"
March 17, 1965
Snow Depth
at 7 AM
2"
Most Snow of Ground
at 7 AM
23"
March 17, 1959


The odds of having any precipitation at all on St. Patrick's Day is 46.2% (67 out of 145).  There has been measurable (0.01" or greater) precipitation on 42 St. Patrick's Days (29.0%) and trace amounts (less than 0.01") of precipitation on 25 St. Patrick's Days (17.2%). 

Since 1897, it has snowed on 43 out of 121 (35.5%) St. Patrick's Days. Measurable snow (0.1" or greater) has fallen on 19 St. Patrick's Days (15.7%). The last time this occurred was back in 2005 when a 1/2" of snow fell.

Since 1893, residents have woken up with measurable snow (1/2" or greater) on the ground 40 times (32.0%), trace amounts (less than a 1/2") 19 times (15.2%), and no snow 66 times (52.8%).

In 2017, the high temperature was 53°F and the low temperature was 35°F.  0.02" of rain fell, a trace of snow fell and there was a trace of snow on the ground at 7 AM.  The average wind speed was 6.9 mph.

Rochester, MN:

The following statistics comprises 105 years of data. From 1887 through 1931, the data came from several cooperative observers in the Rochester area. Since 1932, the data has been gathered at Rochester International Airport. No data was taken on St. Patrick’s Day from 1889 to 1891, 1908, and from 1921 to 1928.

St. Patrick's Day in Rochester, MN
(Period of Record 1887-2017)

1981-2010 Normal
Records
Maximum Temperature

41°F

Warmest High Temperature
81°F
March 17, 2012
Coldest High Temperature
10°F
March 17, 1941
Minimum Temperature
25°F
 
Warmest Low Temperature
58°F
March 17, 2012
Coldest Low Temperature
-10°F
March 17, 1909
Average Temperature
33°F
 
Warmest Average Temperature
69.5°F
March 17, 2012
Coldest Average Temperature
1.0°F
March 17, 1941
Precipitation
0.07"
Wettest
0.58"
March 17, 1986
Snowfall
0.3"
Snowiest
8.2"
March 17, 1942
Snow Depth
at 7 AM
4"
Most Snow of Ground
at 7 AM
16"

March 17, 1962

 

The odds of having any precipitation at all on St. Patrick's Day is 43.7% (45 out of 103).  There has been measurable (0.01" or greater) precipitation on 45 St. Patrick's Days (43.7%) and trace amounts (less than 0.01") of precipitation on 19 St. Patrick's Days (18.4%). 

It has snowed on 30 out of 100 (35.0%) St. Patrick's Days. Measurable snow (0.1" or greater) has fallen on 19 St. Patrick's Days (19.0%). The last time this occurred was back in 2008 when 0.9" of snow fell.

Residents have woken up with measurable snow (1/2" or greater) on the ground 56 times (71.8%), trace amounts (less than a 1/2") 22 times (28.2%), and no snow 22 times (28.2%).

In 2017, the high temperature was 43°F and the low temperature was 28°F.  A trace of rain fell and there was a trace of snow on the ground at 7 AM.  The average wind speed was 16.9 mph.

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St. Patrick's Day Weather History

In 1942, Grand Meadow, MN received 11" of snow.

In 1965, blizzard conditions were seen across Wisconsin and all but the extreme northwest section of Minnesota from early on St. Patrick’s Day and continued through mid day on March 18th. In Minnesota, the snow drifted so high on Highway 60 between Mankato and St. James that officials considered the use of dynamite to break up high banks. Drifting snow closed some secondary roads for such a long period that many dairy farms were forced to dump milk. At Sturgeon Lake, a man lost his way in the storm and froze to death. Most schools, universities, and colleges were closed across both Wisconsin and Minnesota. The following are snow reports from southeast Minnesota and western Wisconsin: La Crosse, WI (8.4"), Mauston, WI (8"), Richland Center, WI (8"), Cashton, WI (7.5"), Spring Grove, MN (7.5"), Platteville, WI (7.3"), Elgin, MN (6"), Mondovi, WI (6"), Prairie du Chien, WI (6"), and Preston, MN (6"), Rochester, MN (4").

In 1989, a mixture of freezing rain and snow fell across most of northern Iowa from 8 AM through 6 PM. The precipitation was light, but road surfaces quickly iced over causing numerous accidents. In Wisconsin, a late winter storm affected the southern two-thirds of the state. In the southern portions of the state, where snow amounts were less, sleet and freezing rain fell. This caused icy conditions. Traffic was snarled, and schools and businesses were closed. Scores of accidents were reported including a 13 car pile up in Marathon County. The following snow amounts were reported: Green Lake (10"), Fond du Lac (9"), Wausau (9"), Mather (6"), and Mondovi (6").

In 2012, record warmth was found across the region.  There were a total of 50 high temperature and 42 warmest low temperatures records set on this date.  The high temperatures for this date ranged from 72 at Medford, WI to 85 at Boscobel, WI.