Table
Sumnary
of
climatic
data
by
months
for
the
1987-88
crop
year
(September
to
August)
and
averajj.es
for
the
period
1949-88
at
the
Eastern
Agricultural
Research
Center,
Sidney,
Montana.
Month
and
Year
Sept.
Oct.
Nov.
Dec.
Jan.
Feb.
Mar.
Apr.
May
June
July
Aug.
1987
1987 1987
1987
1988 1988 1988
1988 1988
1988 1988
1988
Precipitation
(Inches)
Current
year
0.92
0.10
0.21
0.05
0.36
0.49
0.58
0.17
0.79
1.27
0.92
0.12
Avg.
1949
to
1987-88
1.33
0.83
0.45
0.42
0.37
0.35
0.52
1.11
2.00
2.79
1.82
1.54
Mean
Temperature
(F®)
Current
year
60.2
45.7
37.2
26.2
12.0
19.3
37.1
48.1
64.2
78.1
73.7
70.6
Avg.
1949
to
1987-88)
56.4
45.6
29.5
17.2
10.8
18.9
28.9
43.5
55.5
64.2
69.5
67.7
Last
killing
frost
In
spring*
1988
May
4,
1988
(27®)
Avg.
1949
to
1988
----------------
May
16
First
killing
frost
In
fall
1988
October
3,
1988
(22®)
Avg.
1949
to
1988
----------------
September
20
Frost-free
period
151
jayg
Avg.
1949
to
1988
-1^26
Maximum
summer
temperature
^
106"
on
July
27,
1988
Minimum
winter
temperature
29®
below
zero
on
February
1,
1988
Total
or
Average
6.18
13.53
47.7
42.3
*
In
this
summary
32®
Is
considered
a
killing
frost
