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July - September 1999 Weather Data
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Swan Lake Research Farm, Stevens County, MN

(Terms are described on the Weather Page)

Soil Temperatures ( oF)

Air Temp.
( oF) 		Relative Humidity
(%) 		Growing Degree Days 2 Inches 4 Inches
Date Max Min Max Min 50/86 50 40 Precip.
(Inches)
 Max Min Max Min
09/30/99 56.6 39.8 77 48 2414 2281 3948 .00 60.5 47.8 58.2 50.8
09/29/99 63.3 34.9 84 38 2411 2281 3940 .00 63.1 43.5 59.1 47.8
09/28/99 58.4 39.3 88 43 2404 2281 3931 .00 62.5 46.6 59.6 50.4
09/27/99 61.5 42.0 89 49 2400 2281 3922 .00 64.3 47.0 61.2 50.9
09/26/99 61.4 47.8 89 55 2394 2279 3910 .65 62.1 53.5 61.2 56.8
09/25/99 66.2 54.7 87 56 2388 2274 3895 .18 68.4 57.4 64.9 58.8
09/24/99 70.7 44.4 89 41 2378 2264 3875 .00 69.3 51.5 65.6 55.0
09/23/99 68.3 47.1 85 43 2368 2256 3857 .00 70.5 55.1 66.9 57.6
09/22/99 80.9 45.2 88 38 2359 2248 3839 .00 73.7 50.8 68.3 53.9
09/21/99 73.2 36.2 89 42 2344 2235 3816 .00 68.0 45.7 63.8 50.1
09/20/99 55.2 36.1 88 45 2332 2230 3801 .00 64.8 46.8 62.0 51.5
09/19/99 60.2 44.8 88 54 2329 2230 3795 .04 66.7 55.6 66.0 59.1
09/18/99 74.4 53.0 78 60 2324 2228 3783 .00 75.8 56.6 70.5 58.7
09/17/99 76.9 51.9 82 43 2310 2214 3759 .00 72.0 55.3 67.9 57.5
09/16/99 72.2 46.0 86 46 2296 2200 3735 .00 69.2 49.8 65.1 53.0
09/15/99 65.0 46.0 88 46 2285 2191 3716 .00 67.3 50.2 63.7 52.3
09/14/99 59.3 42.4 87 60 2278 2186 3701 .00 57.5 47.8 56.8 51.1
09/13/99 59.0 44.0 87 52 2273 2185 3690 .07 58.9 51.5 58.6 55.1
09/12/99 62.1 50.8 88 53 2268 2184 3679 .08 63.5 54.5 61.7 56.7
09/11/99 66.4 46.5 87 55 2262 2178 3663 .61 65.4 53.0 63.1 56.3
09/10/99 68.2 46.5 87 47 2254 2172 3647 .00 71.3 52.3 67.4 55.9
09/09/99 63.2 47.2 86 47 2245 2165 3630 .06 64.4 52.5 62.5 55.9
09/08/99 63.1 50.8 86 56 2238 2160 3615 .15 66.8 57.2 68.8 60.5
09/07/99 75.4 59.1 83 57 2231 2153 3598 .00 76.1 62.8 72.9 64.5
09/06/99 77.0 51.7 86 51 2214 2136 3571 .00 75.9 55.8 71.9 59.2
09/05/99 65.6 53.7 86 56 2200 2122 3547 .00 69.3 60.2 67.7 62.8
09/04/99 75.2 56.8 87 67 2190 2112 3527 .34 74.6 64.8 72.4 67.5
09/03/99 79.4 57.4 87 67 2174 2096 3501 1.02 81.2 66.8 77.0 68.1
09/02/99 73.0 59.7 87 75 2156 2078 3473 .00 78.1 69.1 74.8 69.9
09/01/99 79.3 64.0 87 69 2140 2062 3447 .00 81.3 65.4 76.7 67.0
08/31/99 81.9 62.3 82 62 2118 2040 3415 .00 78.6 62.2 74.5 63.6
08/30/99 66.3 55.2 88 63 2096 2018 3383 .85 68.4 62.0 70.3 63.8
08/29/99 70.0 58.2 74 54 2085 2007 3362 .00 73.5 65.2 75.8 68.3
08/28/99 79.3 64.3 88 49 2071 1993 3338 .14 82.1 72.1 82.5 74.0
08/27/99 89.7 61.4 88 47 2049 1971 3306 .00 94.9 71.3 88.0 73.4
08/26/99 88.5 64.7 87 58 2026 1945 3270 .00 91.3 69.8 85.2 71.2
08/25/99 78.0 55.9 88 60 2001 1918 3233 .00 86.0 67.5 80.9 69.4
08/24/99 81.0 55.6 87 51 1984 1901 3206 .00 85.6 65.4 79.9 67.2
08/23/99 73.5 58.6 87 65 1966 1883 3178 .04 77.0 66.9 77.6 69.2
08/22/99 81.0 62.7 86 62 1950 1867 3152 .04 86.4 69.3 81.0 70.0
08/21/99 74.2 64.5 86 70 1928 1845 3120 .01 76.8 69.3 75.4 70.6
08/20/99 77.6 59.3 86 57 1909 1826 3091 .00 84.8 65.6 79.5 67.9
08/19/99 75.3 53.3 88 60 1891 1808 3063 .00 82.6 64.2 78.0 67.4
08/18/99 76.6 59.0 86 52 1877 1794 3039 .00 84.7 70.0 80.6 71.6
08/17/99 81.6 55.1 88 47 1859 1776 3011 .00 90.4 64.0 83.4 66.9
08/16/99 79.4 58.6 86 46 1841 1758 2983 .00 83.9 64.7 78.8 67.0
08/15/99 77.4 61.2 83 66 1822 1739 2954 .01 77.5 65.0 74.2 66.8
08/14/99 73.2 51.7 89 55 1803 1720 2925 .00 82.4 60.0 77.1 63.3
08/13/99 71.5 54.9 86 48 1791 1708 2903 .05 76.9 61.1 73.8 64.1
08/12/99 69.2 58.5 86 82 1778 1695 2880 .79 76.6 65.6 78.1 68.3
08/11/99 83.7 63.4 86 56 1764 1681 2856 .00 87.5 69.4 81.9 71.1
08/10/99 78.9 59.9 87 58 1740 1657 2822 .00 87.0 66.1 81.5 68.5
08/09/99 81.2 57.2 89 61 1721 1638 2793 2.72 80.1 68.3 78.9 70.2
08/08/99 73.4 53.0 87 54 1702 1619 2764 .00 90.2 65.2 84.2 68.7
08/07/99 77.1 56.0 87 59 1689 1606 2741 .00 86.3 72.4 82.5 74.4
08/06/99 83.1 59.8 87 55 1672 1589 2714 .00 94.4 71.3 87.6 73.5
08/05/99 84.6 57.2 88 50 1651 1568 2683 .00 90.6 67.7 84.6 70.4
08/04/99 80.5 55.4 87 47 1630 1547 2652 .00 88.1 64.0 82.2 67.6
08/03/99 77.8 59.5 87 51 1612 1529 2624 .15 83.7 69.1 79.9 71.0
08/02/99 77.6 52.9 89 51 1593 1510 2595 .00 90.8 64.1 84.8 67.6
08/01/99 74.6 56.0 87 48 1578 1495 2570 .00 85.0 65.8 80.6 68.5
07/31/99 73.8 57.7 87 49 1563 1480 2545 .01 85.6 67.2 81.8 70.5
07/30/99 91.0 67.0 87 48 1547 1464 2519 .02 92.9 74.6 88.0 77.6
07/29/99 91.8 66.3 87 51 1521 1435 2480 .00 97.3 73.7 90.5 75.4
07/28/99 86.2 57.6 87 46 1495 1406 2441 .10 89.7 67.3 84.5 70.3
07/27/99 85.0 61.4 86 52 1474 1384 2409 .39 92.7 68.4 85.5 71.5
07/26/99 78.6 60.0 87 47 1451 1361 2376 .00 87.9 69.3 83.6 73.0
07/25/99 89.3 66.7 87 63 1432 1342 2347 .78 91.5 78.1 88.3 80.3
07/24/99 90.6 62.8 87 43 1406 1314 2309 .00 100.7 74.3 93.4 76.6
07/23/99 89.2 62.1 87 57 1382 1287 2272 .06 94.5 73.7 88.9 76.2
07/22/99 87.2 62.0 87 64 1358 1261 2236 .22 96.6 73.4 90.0 75.4
07/21/99 81.5 59.1 87 59 1334 1236 2201 .00 96.0 71.2 88.8 73.4
07/20/99 81.2 66.9 86 54 1314 1216 2171 .00 92.6 72.5 85.8 73.8
07/19/99 84.1 62.0 87 57 1290 1192 2137 .00 90.1 68.6 84.1 69.7
07/18/99 73.3 63.7 84 72 1267 1169 2104 .04 76.3 68.9 75.9 70.7
07/17/99 74.0 55.5 88 56 1248 1150 2075 .00 86.9 65.1 80.8 68.6
07/16/99 76.6 59.5 88 51 1233 1135 2050 .50 83.1 71.9 80.4 73.8
07/15/99 89.2 61.3 89 58 1215 1117 2022 2.88 92.7 77.2 87.4 78.4
07/14/99 88.4 64.0 87 54 1192 1092 1987 .00 97.0 72.4 90.1 74.2
07/13/99 82.6 63.3 87 57 1167 1066 1951 .00 92.2 70.7 85.5 72.1
07/12/99 81.3 58.7 85 52 1144 1043 1918 .00 91.5 67.9 84.7 70.6
07/11/99 78.6 54.5 89 46 1124 1023 1888 .00 92.8 64.5 85.3 67.5
07/10/99 75.6 52.6 87 48 1107 1006 1861 .00 87.7 59.8 81.1 63.1
07/09/99 70.2 55.1 86 64 1093 992 1837 .00 75.5 63.0 72.8 66.2
07/08/99 82.9 60.9 90 71 1080 979 1814 .97 82.1 68.9 83.8 72.5
07/07/99 84.7 60.9 77 47 1058 957 1782 .00 97.4 67.4 89.3 70.3
07/06/99 79.5 56.8 82 39 1035 934 1749 .00 91.0 65.4 84.5 68.9
07/05/99 82.9 61.2 86 47 1017 916 1721 .00 88.0 74.4 83.5 76.2
07/04/99 89.7 69.3 87 63 995 894 1689 .00 90.9 74.3 84.6 74.0
07/03/99 89.0 65.8 88 65 968 864 1649 .50 84.3 68.8 79.4 69.2
07/02/99 77.4 54.9 88 58 943 837 1612 .01 81.1 62.2 75.3 64.1
07/01/99 73.2 56.8 88 59 927 821 1586 .03 77.6 62.5 73.3 64.5

   
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Last Modified: 01/14/2009
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