Cold First Week of April 2007

The first week of April was dominated by an artic air mass that plunged temperatures to the single digits in the north with a low of zero at Itasca on April 5th. Some snow accompanied the cold as well. Temperatures rebounded by the middle of the month and highs in the 60ís and 70ís were common.

Precipitation and Temperature Summary for 4/2/2007 through 4/8/2007

                    Temperature           Precipitation           G D D
               High Low Week Depart   Week  Depart From Norm   Since Depart
                        Ave   from    Total Past Four  Since   May   from
                              Norm          Week Weeks  4/1      1   Norm
Crookston       36   9  20.0 -15.8     .65   .41  1.35    .81     M     M 
Moorhead        38  10  20.8 -17.1     .50   .22  1.21    .61     M     M 
Warroad         34   3  17.8 -13.9     .48   .26  1.60   1.40     M     M 
Grand Rapids    36   6  21.8 -14.2     .66   .28  1.39    .44     M     M 
Intl. Falls     32   3  18.6 -15.2     .21  -.06   .88    .15     M     M 
Itasca          38   0  18.4 -14.1     .68   .31  1.91   1.23     M     M 
Duluth          38   5  21.0 -13.1     .71   .25   .47    .34     M     M 
Grand Marais    51   9  25.4  -9.4     .29   .03   .58    .46     M     M 
Hibbing         35   4  19.3 -15.0     .72   .41   .70    .37     M     M 
Alexandria      37   7  19.4 -17.8     .25  -.16  1.16    .22     M     M 
Browns Valley   40  10  22.6 -16.5    1.01   .55  2.30   2.09     M     M 
Canby           42  12  24.1 -16.4     .26  -.25  1.79   1.56     M     M 
Fergus Falls    39   6  21.8 -15.2     .74   .39  2.75   1.99     M     M 
Montevideo      41  12  22.8 -16.3     .05  -.42  2.49   -.34     M     M 
Morris          39   8  21.1 -17.5     .66   .23  1.56   1.77     M     M 
Becker          44  13  26.6 -11.8     .22  -.31  1.31   -.18     M     M 
Collegeville    42  11  25.4 -14.8     .55   .09  1.94    .34     M     M 
Hutchinson      46  14  27.6 -12.3     .12  -.36   .49    .08     M     M 
Olivia          46  12  27.1 -12.0     .10  -.40   .74    .23     M     M 
St. Cloud       43  10  23.7 -14.7     .29  -.17  1.66   -.08     M     M 
Staples         41   3  20.8 -15.9     .60   .17  1.19    .28     M     M 
Willmar         42  13  24.6 -14.2     .35  -.11  1.44   1.10     M     M 
Aitkin          42   6  23.0 -13.0     .52   .09   .40    .47     M     M 
Forest Lake     54  13  29.0 -10.1     .24  -.26  1.03    .98     M     M 
MSP Airport     51  15  28.6 -13.1     .07  -.44   .84   -.42     M     M 
St. Paul - UofM 50  14  29.2 -13.8     .12  -.42  1.09   -.04     M     M 
Lamberton       47  13  26.4 -13.6     .43  -.16   .73    .87     M     M 
Pipestone       47  10  24.4 -15.3     .08  -.43   .25    .21     M     M 
Redwood Falls   44  13  24.7 -17.1     .08  -.46  1.24   -.37     M     M 
Sioux Falls     50  14  27.6 -13.6     .02  -.54  3.06   -.51     M     M 
Worthington     46  12  26.8 -11.7     .20  -.40   .88    .36     M     M 
Faribault       56  15  30.6  -8.6     .12  -.47   .87   -.13     M     M 
Mankato         49  15  29.0 -11.8     .18  -.51   .14    .20     M     M 
Waseca          48  14  28.8 -11.1     .03  -.68   .48    .30     M     M 
Winnebago       49  14  29.0 -11.3     .05  -.57   .74   -.29     M     M 
La Crosse       52  19  33.4 -10.3     .13  -.60   .66   -.64     M     M 
Preston         50  16  31.0  -9.6     .40  -.27   .41    .79     M     M 
Red Wing        51  13  30.5 -10.3     .34  -.23   .57   -.26     M     M 
Rochester       48  15  28.5 -11.5     .02  -.62   .34   -.70     M     M 
Rosemount       50  14  29.8 -10.6     .30  -.32  1.11    .59     M     M 
Winona          51  18  34.3  -8.6     .88   .20   .69    .61     M     M 
m=some data missing

                          District Averages
                          -----------------
                      Avg.   Dept.  Avg.   Dept.
                      Temp.  from   Prec.  from
                             Norm.         Norm.
1 (NorthWest)         19.5  -15.6    .54    .29
2 (North Central)     19.6  -14.5    .52    .17
3 (NorthEast)         21.9  -12.5    .57    .23
4 (West Central)      22.0  -16.6    .50    .06
5 (Central)           25.1  -13.7    .32   -.16
6 (East Central)      27.5  -12.5    .24   -.26
7 (SouthWest)         26.0  -14.3    .16   -.40
8 (South Central)     29.4  -10.7    .10   -.56
9 (SouthEast)         31.3  -10.2    .35   -.31
  Statewide Average   24.7  -13.4    .37   -.10

Some of the departures from normal are derived through estimates.
Data in this summary are courtesy of National Weather Service Offices and
Cooperators, and the Unversity of Minnesota Agricultural Experiment Station.

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URL: http://climate.umn.edu/doc/journal/coldapril2007.htm
Last modified: December 21, 2007