April 2018 Monthly Climate Summaries & May Outlook

April Climate Summary
and May Climate Outlook

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For a larger view of the Duluth, Minnesota temperature graph provided by the Midwestern Regional Climate Center: Click Here

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For a larger view of the International Falls, Minnesota temperature graph provided by the Midwestern Regional Climate Center: Click Here

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For a larger view of the Brainerd, Minnesota temperature graph provided by the Midwestern Regional Climate Center: Click Here

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For a larger view of the Hibbing, Minnesota temperature graph provided by the Midwestern Regional Climate Center: Click Here

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For a larger view of the Ashland, Wisconsin temperature graph provided by the Midwestern Regional Climate Center: Click Here

May Climate Outlook

Temperature Outlook

Precipitation Outlook

For Duluth, normal highs start in the mid to upper 50s and warm to the mid 60s at the end of the month. Normal lows for the month start in the mid 30s and warm to the mid 40s by the end of the month. Normal precipitation for May is 3.23 inches. Normal snowfall for May is 0.4 inches.

For International Falls, normal highs begin the month in the low 60s and warm to the upper 60s by the end of the month. Normal lows for the month start in the mid 30s and warm to the mid 40s at the end of the month. Normal precipitation for May 2.86 inches.

For Brainerd, normal highs begin in the mid 60s and warm to the low 70s by the end of the month. Normal lows begin in the low 40s and warm to the upper 40s by the end of the month. Normal precipitation for May is 3.37 inches.

For Hibbing, normal highs range from the low 60s at the beginning of the month and warm to the upper 60s by the end of the month. Normal lows range from the low 30s at the beginning of the month and warm to the low 40s by the end of the month. Normal precipitation for May is 2.25 inches.

For Ashland, normal highs begin in the low 60s and warm to the upper 60s by the end of the month. Normal lows begin in the mid 30s and warm to the low to mid 40s by the end of the month. Normal precipitation for May is 3.07 inches.

For all locations the latest Climate Prediction Center Outlook indicates that odds are tilted toward above normal temperatures and slightly tilted toward above normal precipitation.

Duluth, MN

Normals for the Month of May (The monthly climate normals are from a 30 year period defined by the Climate Prediction Center as 1981-2010)
The Normal, Monthly Average Temperature (degrees F)	51.4
The Normal, Monthly High Temperature (degrees F)	62.2
The Normal, Monthly Low Temperature (degrees F)	40.6

Normal Monthly Precipitation (inches)	3.23
Normal Monthly Snowfall (inches)	0.4

Normal number of days with Measurable Precipitation	12.3
Normal number of days with snow depth of 1 inch or greater	0.1

Normal Heating Degree Days	426
Normal Cooling Degree Days	4

Records for the Month of May
Warmest Month (Monthly Average Temperature)	57.4 in 1977
Coldest Month (Monthly Average Temperature)	38.8 in 1907
Highest Observed Temperature (degrees F)	95 on the 30^th in 1939
Lowest Observed High Temperature (degrees F)	27 on the 3^rd in 1954
Lowest Observed Temperature (degrees F)	16 on the 3^rd in 1907
Highest Observed Low Temperature (degrees F)	42 on the 10^th in 1927

Greatest Monthly Precipitation (inches)	7.99 in 1879
Least Monthly Precipitation (inches)	0.15 in 1976
Greatest Daily Precipitation (inches)	3.93 on the 23^rd in 2010

Greatest Monthly Snowfall (inches)	8.1 in 1954
Least Monthly Snowfall (inches)	0.0
Greatest Daily Snowfall (inches)	5.5 on the 10^th in 1902
Greatest Measured Snow Depth (inches)	9 on the 1^st to 3^rd in 1950

International Falls, MN

Normals for the Month of May (The monthly climate normals are from a 30 year period defined by the Climate Prediction Center as 1981-2010)
The Normal, Monthly Average Temperature (degrees F)	51.8
The Normal, Monthly High Temperature (degrees F)	64.8
The Normal, Monthly Low Temperature (degrees F)	38.7

Normal Monthly Precipitation (inches)	2.86
Normal Monthly Snowfall (inches)	0.2

Normal number of days with Measurable Precipitation	12.4
Normal number of days with snow depth of 1 inch or greater	4.5

Normal Heating Degree Days	419
Normal Cooling Degree Days	8

Records for the Month of May
Warmest Month (Monthly Average Temperature)	60.9 in 1977
Coldest Month (Monthly Average Temperature)	43.0 in 1924
Highest Observed Temperature (degrees F)	95 on the 21^st in 1964
Lowest Observed High Temperature (degrees F)	26 on the 2^nd in 1967
Lowest Observed Temperature (degrees F)	8 on the 17^th in 1926
Highest Observed Low Temperature (degrees F)	66 on the 31^st in 1988 & on the 21^st in 1992

Greatest Monthly Precipitation (inches)	6.67 in 1985
Least Monthly Precipitation (inches)	0.07 in 1917
Greatest Daily Precipitation (inches)	2.67 on the 23^rd in 1991

Greatest Monthly Snowfall (inches)	13.4 in 1954
Least Monthly Snowfall (inches)	0 in multiple years
Greatest Daily Snowfall (inches)	8.0 on 5^th 1925
Greatest Measured Snow Depth (inches)	12 on the 4^th-5^th in 1954

Brainerd, MN

Normals for the Month of May (The monthly climate normals are from a 30 year period defined by the Climate Prediction Center as 1981-2010)
The Normal, Monthly Average Temperature (degrees F)	56.0
The Normal, Monthly High Temperature (degrees F)	67.6
The Normal, Monthly Low Temperature (degrees F)	44.4

Normal Monthly Precipitation (inches)	2.35

Normal Heating Degree Days	299
Normal Cooling Degree Days	20

Records for the Month of May
Warmest Month (Monthly Average Temperature)	63.4 in 1977
Coldest Month (Monthly Average Temperature)	48.1 in 1927
Highest Observed Temperature (degrees F)	101 on the 31^st in 1934
Lowest Observed High Temperature (degrees F)	33 on the 3^rd in 1967
Lowest Observed Temperature (degrees F)	16 on the 3^rd and 4^th in 1967
Highest Observed Low Temperature (degrees F)	70 on the 28^th in 1969

Greatest Monthly Precipitation (inches)	9.40 in 1959
Least Monthly Precipitation (inches)	0.58 in 1952
Greatest Daily Precipitation (inches)	4.03 on the 27^th in 2012

Hibbing, MN

Normals for the Month of May (The monthly climate normals are from a 30 year period defined by the Climate Prediction Center as 1981-2010)
The Normal, Monthly Average Temperature (degrees F)	50.6
The Normal, Monthly High Temperature (degrees F)	65.0
The Normal, Monthly Low Temperature (degrees F)	36.3

Normal Monthly Precipitation (inches)	2.55

Normal Heating Degree Days	449
Normal Cooling Degree Days	4

Records for the Month of May
Warmest Month (Monthly Average Temperature)	59.9 in 1977
Coldest Month (Monthly Average Temperature)	45.1 in 2002
Highest Observed Temperature (degrees F)	95 on the 30^th in 1939
Lowest Observed High Temperature (degrees F)	27 on the 3^rd in 1954
Lowest Observed Temperature (degrees F)	14 on the 3^rd in 1967
Highest Observed Low Temperature (degrees F)	67 on the 30^th in 1986

Greatest Monthly Precipitation (inches)	7.63 in 2014
Least Monthly Precipitation (inches)	0.29 in 1952
Greatest Daily Precipitation (inches)	2.57 on the 31^st in 2014

Ashland, WI

Normals for the Month of May (The monthly climate normals are from a 30 year period defined by the Climate Prediction Center as 1981-2010)
The Normal, Monthly Average Temperature (degrees F)	51.9
The Normal, Monthly High Temperature (degrees F)	64.9
The Normal, Monthly Low Temperature (degrees F)	38.8

Normal Monthly Precipitation (inches)	3.07

Normal Heating Degree Days	414
Normal Cooling Degree Days	6

Records for the Month of May
Warmest Month (Monthly Average Temperature)	58.5 in 1977
Coldest Month (Monthly Average Temperature)	42.8 in 1907
Highest Observed Temperature (degrees F)	96 on the 30^th in 1939
Lowest Observed High Temperature (degrees F)	32 on the 3^rd in 1954 and 2013
Lowest Observed Temperature (degrees F)	16 on the 10^th in 1966 and on the 1^st in 1978
Highest Observed Low Temperature (degrees F)	69 on the 30^th in 1939

Greatest Monthly Precipitation (inches)	8.06 in 1953 and 2013
Least Monthly Precipitation (inches)	0.57 in 1925
Greatest Daily Precipitation (inches)	2.61 on the 21^st in 1953