San Jacinto Weather in 1978

Historical record of San Jacinto, California weather for the year 1978 based on NOAA data.
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1978 San Jacinto Weather Extremes
Highest temperature 108 °F August 6
Lowest temperature 18 °F December 8
Highest daily low 66 °F August 7
Lowest daily high 45 °F December 19
Most daily precipitation 1.8 inches March 1
Highest Temperatures in San Jacinto in 1978
Rank Temperature Date
1 108 °F Aug 6
1 108 °F Aug 5
3 106 °F Oct 13
3 106 °F Aug 7
5 105 °F Aug 29
5 105 °F Aug 4
5 105 °F Jun 8
8 104 °F Oct 14
8 104 °F Aug 31
8 104 °F Jun 22
8 104 °F May 29
Lowest Temperatures in San Jacinto in 1978
Rank Temperature Date
1 18 °F December 8
2 20 °F December 7
3 25 °F December 9
4 26 °F January 24
5 28 °F December 6
6 29 °F December 21
6 29 °F December 20
6 29 °F December 10
6 29 °F January 25
10 30 °F November 29
10 30 °F November 11
January 1978 San Jacinto Weather
Day High (°F) Low (°F) Precip. (inches)
66 37 0.00
63 38 0.00
58 38 0.02
59 46 1.06
58 47 1.16
57 46 0.50
68 47 0.00
71 38 0.00
66 43 0.41
57 48 1.51
62 46 0.09
64 38 0.00
70 41 0.00
61 47 0.49
58 50 1.43
58 43 0.22
n/a 48 0.55
66 37 0.00
59 47 0.60
62 38 0.00
65 35 0.00
63 36 0.00
63 38 0.00
61 26 0.00
67 29 0.00
72 32 0.00
71 38 0.00
76 39 0.00
76 39 0.00
67 49 0.16
57 47 0.21
February 1978 San Jacinto Weather
Day High (°F) Low (°F) Precip. (inches)
63 42 0.00
67 34 0.00
78 35 0.00
78 41 0.00
68 50 0.31
61 51 0.35
60 48 0.25
63 47 0.36
58 48 0.57
55 45 0.92
50 38 0.14
54 38 0.05
53 42 0.94
60 36 0.07
58 33 0.00
62 36 0.00
65 32 0.00
69 34 0.00
70 35 0.00
73 34 0.00
80 37 0.00
81 36 0.00
77 37 0.00
73 37 0.00
66 34 0.00
66 41 0.00
63 38 0.07
67 51 0.65
March 1978 San Jacinto Weather
Day High (°F) Low (°F) Precip. (inches)
62 50 1.82
56 50 0.82
63 46 0.15
58 45 0.45
58 48 1.64
61 42 0.49
73 39 0.00
72 46 0.00
64 43 0.00
58 44 0.00
59 47 0.06
60 45 0.42
65 38 0.00
74 41 0.00
80 38 0.00
84 43 0.00
91 43 0.00
85 50 0.00
70 42 0.00
68 50 0.00
63 54 0.12
61 49 0.52
66 46 0.04
78 n/a 0.00
86 43 0.00
85 47 0.00
77 45 0.00
80 50 0.00
69 53 0.00
65 52 0.06
64 51 0.73
April 1978 San Jacinto Weather
Day High (°F) Low (°F) Precip. (inches)
63 48 0.14
64 48 0.07
67 45 0.00
59 47 0.05
69 39 0.00
65 47 0.00
58 42 0.46
67 40 0.00
69 38 0.16
79 43 0.00
79 45 0.00
72 49 0.00
68 48 0.00
66 50 0.00
67 51 0.07
62 49 0.49
74 38 0.00
81 42 0.00
75 45 0.00
72 42 0.00
67 48 0.00
76 38 0.00
82 41 0.00
78 49 0.00
79 52 0.06
67 47 0.00
76 44 0.00
78 47 0.00
79 45 0.00
62 53 0.00
May 1978 San Jacinto Weather
Day High (°F) Low (°F) Precip. (inches)
59 49 0.00
77 42 0.00
81 45 0.00
76 52 0.03
68 53 0.00
79 43 0.00
85 40 0.00
89 44 0.00
87 48 0.00
85 47 0.00
84 44 0.00
100 48 0.00
101 56 0.00
96 51 0.00
86 50 0.00
85 50 0.00
90 45 0.00
94 46 0.00
96 49 0.00
92 50 0.00
87 48 0.00
84 51 0.00
75 53 0.00
77 50 0.00
77 45 0.00
77 44 0.00
92 45 0.00
103 49 0.00
104 54 0.00
97 54 0.00
June 1978 San Jacinto Weather
Day High (°F) Low (°F) Precip. (inches)
n/a 51 0.00
83 43 0.00
87 n/a 0.00
n/a n/a 0.00
93 49 0.00
103 48 0.00
103 42 0.00
105 46 0.00
102 46 0.00
96 45 0.00
88 51 0.00
98 55 0.00
102 55 0.00
96 56 0.00
93 52 0.00
96 46 0.00
102 n/a 0.00
n/a n/a 0.00
n/a 47 0.00
101 42 0.00
102 48 0.00
104 48 0.00
99 48 0.00
102 49 0.00
95 49 0.00
85 51 0.00
80 51 0.00
86 50 0.00
87 50 0.00
90 50 0.00
July 1978 San Jacinto Weather
Day High (°F) Low (°F) Precip. (inches)
n/a n/a n/a
n/a n/a n/a
n/a n/a n/a
n/a n/a n/a
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n/a n/a n/a
August 1978 San Jacinto Weather
Day High (°F) Low (°F) Precip. (inches)
98 58 0.00
98 57 0.00
99 57 0.00
105 65 0.00
108 64 0.00
108 55 0.00
106 66 0.00
101 65 0.05
100 62 0.00
101 61 0.00
98 61 0.00
96 60 0.00
94 61 0.00
n/a n/a 0.00
n/a n/a 0.00
99 51 0.00
93 50 0.00
96 50 0.00
n/a n/a 0.00
98 51 0.00
94 52 0.00
94 46 0.00
91 46 0.00
93 44 0.00
91 47 0.00
91 47 0.00
97 54 0.00
103 56 0.00
105 55 0.00
98 58 0.00
104 54 0.00
September 1978 San Jacinto Weather
Day High (°F) Low (°F) Precip. (inches)
n/a n/a n/a
n/a n/a n/a
n/a n/a n/a
n/a n/a n/a
n/a n/a n/a
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n/a n/a n/a
n/a n/a n/a
n/a n/a n/a
n/a n/a n/a
October 1978 San Jacinto Weather
Day High (°F) Low (°F) Precip. (inches)
100 55 0.00
94 54 0.00
98 55 0.00
96 56 0.00
95 55 0.00
98 55 0.00
95 55 0.00
93 55 0.00
92 56 0.00
92 54 0.00
97 56 0.00
100 54 0.00
106 56 0.00
104 54 0.00
94 55 0.00
90 55 0.00
81 49 0.00
87 46 0.00
88 49 0.00
80 49 0.00
74 57 0.00
83 55 0.00
83 52 0.00
78 60 0.00
n/a n/a 0.00
88 45 0.00
88 48 0.00
91 47 0.00
83 45 0.00
72 48 0.00
67 48 0.00
November 1978 San Jacinto Weather
Day High (°F) Low (°F) Precip. (inches)
70 45 0.00
69 39 0.00
81 39 0.00
90 45 0.00
78 45 0.00
88 45 0.00
91 45 0.00
90 46 0.00
89 45 0.00
60 45 0.01
55 30 0.55
55 35 0.90
55 37 0.00
67 43 0.22
62 35 0.00
66 33 0.00
66 35 0.00
70 35 0.00
71 37 0.00
62 34 0.00
55 44 0.00
60 38 0.64
67 57 0.01
59 47 0.10
60 42 0.59
58 37 0.00
62 35 0.00
63 32 0.00
66 30 0.00
72 n/a 0.00
December 1978 San Jacinto Weather
Day High (°F) Low (°F) Precip. (inches)
69 40 0.08
59 38 0.00
60 49 0.00
65 33 0.00
56 34 0.00
51 28 0.00
46 20 0.00
50 18 0.00
58 25 0.00
70 29 0.00
70 36 0.00
70 36 0.00
72 35 0.00
72 33 0.00
67 36 0.00
68 34 0.00
57 45 0.82
52 44 0.58
45 40 0.86
54 29 0.06
62 29 0.00
66 35 0.00
65 32 0.00
68 35 0.00
67 35 0.00
68 33 0.00
62 34 0.00
55 43 0.00
56 40 0.00
64 33 0.00
62 31 0.00
Weather Station Details
Years Station Coordinates
1978–2024 San Jacinto location
1893–1978 San Jacinto location