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Half Moon Bay Weather in 1978

Historical record of Half Moon Bay, California weather for the year 1978 based on NOAA data.
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1978 Half Moon Bay Weather Extremes
Highest temperature 91 °F September 23
Lowest temperature 29 °F December 8
Highest daily low 60 °F August 26
Lowest daily high 50 °F December 7
Most daily precipitation 3.1 inches January 15
Most daily snow none -
Total annual precipitation 28.6 inches -
Total annual snow none -
January 1978 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
January 1
57 50 0.03
January 2
59 49 0.17
January 3
59 51 0.15
January 4
59 47 0.57
January 5
58 52 0.54
January 6
62 50 0.14
January 7
66 41 0.00
January 8
65 51 0.10
January 9
62 55 0.95
January 10
64 50 0.00
January 11
62 46 0.00
January 12
59 50 0.20
January 13
62 55 0.21
January 14
60 51 0.30
January 15
59 49 3.08
January 16
61 51 1.20
January 17
60 52 0.50
January 18
59 46 0.20
January 19
60 50 0.60
January 20
61 53 0.00
January 21
61 46 0.02
January 22
60 40 0.05
January 23
60 41 0.00
January 24
61 44 0.00
January 25
64 39 0.00
January 26
64 41 0.00
January 27
62 44 0.00
January 28
66 43 0.00
January 29
65 42 0.00
January 30
64 42 0.00
January 31
60 41 0.00
February 1978 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
February 1
59 45 0.03
February 2
62 50 0.00
February 3
65 48 0.00
February 4
61 51 0.00
February 5
62 49 0.87
February 6
61 54 1.06
February 7
61 53 1.50
February 8
60 46 0.17
February 9
59 46 0.32
February 10
54 46 0.00
February 11
55 38 0.00
February 12
56 46 1.40
February 13
55 48 0.05
February 14
58 42 0.04
February 15
55 40 0.00
February 16
55 40 0.14
February 17
63 48 0.00
February 18
66 47 0.00
February 19
67 45 0.00
February 20
64 48 0.00
February 21
65 47 0.00
February 22
62 46 0.04
February 23
61 47 0.00
February 24
56 50 0.00
February 25
59 46 0.00
February 26
58 45 0.00
February 27
63 40 0.00
February 28
62 43 0.00
March 1978 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
March 1
62 52 0.24
March 2
59 53 0.40
March 3
62 54 0.61
March 4
62 53 0.30
March 5
62 53 0.10
March 6
61 46 0.00
March 7
61 46 0.00
March 8
62 54 1.28
March 9
64 48 0.68
March 10
58 53 0.00
March 11
61 46 0.02
March 12
58 47 0.00
March 13
61 47 0.00
March 14
64 43 0.00
March 15
71 40 0.00
March 16
75 47 0.00
March 17
76 45 0.00
March 18
75 52 0.00
March 19
71 51 0.00
March 20
67 49 0.00
March 21
66 51 0.71
March 22
65 50 0.43
March 23
64 53 0.04
March 24
63 45 0.00
March 25
65 50 0.00
March 26
62 45 0.00
March 27
70 45 0.00
March 28
59 52 0.00
March 29
59 51 0.00
March 30
64 51 0.03
March 31
60 53 0.74
April 1978 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
April 1
61 50 0.27
April 2
64 48 0.00
April 3
61 42 0.02
April 4
61 41 0.65
April 5
59 40 0.00
April 6
57 46 0.77
April 7
58 41 0.15
April 8
66 40 0.00
April 9
76 40 0.00
April 10
70 43 0.00
April 11
64 51 0.00
April 12
60 51 0.00
April 13
60 53 0.00
April 14
60 52 0.00
April 15
58 46 1.88
April 16
62 42 0.02
April 17
65 40 0.00
April 18
62 42 0.00
April 19
62 45 0.00
April 20
61 50 0.03
April 21
61 41 0.05
April 22
65 39 0.00
April 23
64 40 0.00
April 24
n/a 42 0.07
April 25
62 49 0.52
April 26
65 49 0.05
April 27
62 53 0.00
April 28
63 53 0.00
April 29
60 51 0.00
April 30
60 50 0.02
May 1978 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
May 1
61 48 0.00
May 2
61 43 0.00
May 3
60 47 0.00
May 4
59 42 0.00
May 5
59 47 0.00
May 6
72 48 0.00
May 7
74 46 0.00
May 8
70 41 0.00
May 9
65 48 0.00
May 10
59 50 0.00
May 11
64 46 0.00
May 12
66 43 0.00
May 13
68 46 0.00
May 14
66 42 0.00
May 15
65 46 0.00
May 16
66 42 0.00
May 17
68 45 0.00
May 18
68 43 0.00
May 19
71 46 0.00
May 20
66 51 0.00
May 21
66 56 0.00
May 22
62 50 0.00
May 23
59 48 0.00
May 24
60 47 0.00
May 25
62 46 0.00
May 26
66 46 0.00
May 27
63 45 0.00
May 28
62 45 0.00
May 29
64 46 0.00
May 30
67 44 0.00
May 31
69 46 0.00
June 1978 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
June 1
64 54 0.00
June 2
65 49 0.00
June 3
64 58 0.00
June 4
62 57 0.00
June 5
61 50 0.00
June 6
62 50 0.00
June 7
64 45 0.00
June 8
61 50 0.00
June 9
64 50 0.00
June 10
61 50 0.00
June 11
63 51 0.00
June 12
63 44 0.00
June 13
64 51 0.00
June 14
62 52 0.00
June 15
63 43 0.00
June 16
64 48 0.00
June 17
63 46 0.00
June 18
66 46 0.00
June 19
67 50 0.00
June 20
61 51 0.00
June 21
64 53 0.00
June 22
63 53 0.00
June 23
66 53 0.00
June 24
67 52 0.00
June 25
65 52 0.00
June 26
65 48 0.00
June 27
60 52 0.00
June 28
62 53 0.00
June 29
67 55 0.00
June 30
69 53 0.00
July 1978 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
July 1
68 54 0.00
July 2
66 53 0.00
July 3
67 53 0.00
July 4
66 53 0.00
July 5
65 53 0.00
July 6
63 52 0.00
July 7
61 51 0.00
July 8
64 52 0.00
July 9
62 52 0.00
July 10
60 51 0.00
July 11
58 51 0.00
July 12
63 52 0.00
July 13
64 51 0.00
July 14
65 50 0.00
July 15
62 50 0.00
July 16
64 53 0.00
July 17
67 50 0.00
July 18
64 48 0.00
July 19
64 52 0.00
July 20
64 53 0.00
July 21
68 49 0.00
July 22
64 51 0.00
July 23
62 50 0.00
July 24
66 51 0.00
July 25
68 53 0.00
July 26
69 53 0.00
July 27
66 53 0.00
July 28
64 52 0.00
July 29
63 49 0.00
July 30
62 50 0.00
July 31
64 52 0.00
August 1978 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
August 1
61 46 0.00
August 2
60 51 0.00
August 3
61 50 0.00
August 4
63 52 0.00
August 5
65 51 0.00
August 6
71 52 0.00
August 7
70 51 0.00
August 8
67 53 0.00
August 9
65 54 0.00
August 10
64 52 0.00
August 11
63 49 0.00
August 12
66 52 0.00
August 13
67 51 0.00
August 14
67 51 0.00
August 15
63 50 0.00
August 16
65 50 0.00
August 17
69 53 0.00
August 18
69 47 0.00
August 19
68 46 0.00
August 20
69 48 0.00
August 21
68 49 0.00
August 22
66 50 0.00
August 23
67 51 0.00
August 24
71 47 0.00
August 25
72 59 0.00
August 26
74 60 0.00
August 27
n/a 54 0.00
August 28
72 53 0.00
August 29
65 55 0.00
August 30
64 54 0.00
August 31
65 55 0.00
September 1978 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
September 1
71 50 0.00
September 2
70 50 0.00
September 3
73 52 0.00
September 4
n/a 48 0.00
September 5
70 55 0.00
September 6
68 53 0.00
September 7
68 56 0.00
September 8
68 48 0.00
September 9
68 52 0.00
September 10
67 54 0.00
September 11
68 49 0.00
September 12
67 47 0.00
September 13
66 48 0.00
September 14
68 50 0.00
September 15
65 49 0.00
September 16
66 50 0.00
September 17
63 43 0.00
September 18
63 43 0.00
September 19
68 45 0.00
September 20
72 43 0.00
September 21
68 42 0.00
September 22
69 45 0.00
September 23
91 52 0.00
September 24
89 54 0.00
September 25
72 52 0.00
September 26
67 53 0.00
September 27
64 55 0.00
September 28
n/a 46 0.00
September 29
85 50 0.00
September 30
65 55 0.00
October 1978 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
October 1
66 50 0.00
October 2
68 45 0.00
October 3
66 45 0.00
October 4
58 45 0.00
October 5
60 50 0.00
October 6
61 55 0.00
October 7
63 51 0.00
October 8
58 41 0.00
October 9
65 46 0.00
October 10
65 45 0.00
October 11
66 42 0.00
October 12
72 48 0.00
October 13
81 52 0.00
October 14
71 51 0.00
October 15
66 52 0.00
October 16
59 54 0.05
October 17
58 52 0.00
October 18
59 50 0.00
October 19
60 51 0.00
October 20
63 53 0.00
October 21
61 52 0.00
October 22
62 49 0.00
October 23
82 44 0.00
October 24
69 43 0.00
October 25
64 53 0.00
October 26
64 45 0.00
October 27
63 42 0.00
October 28
62 40 0.00
October 29
61 41 0.00
October 30
68 40 0.00
October 31
63 45 0.00
November 1978 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
November 1
66 45 0.00
November 2
64 40 0.00
November 3
62 40 0.00
November 4
60 39 0.00
November 5
64 42 0.00
November 6
71 44 0.00
November 7
68 47 0.00
November 8
67 46 0.00
November 9
59 45 0.00
November 10
62 35 0.00
November 11
61 38 0.00
November 12
59 34 0.00
November 13
51 42 0.47
November 14
57 34 0.00
November 15
58 35 0.00
November 16
56 42 0.00
November 17
59 40 0.00
November 18
61 39 0.00
November 19
63 41 0.00
November 20
58 50 0.79
November 21
57 46 0.75
November 22
57 45 0.99
November 23
58 42 0.04
November 24
59 40 0.00
November 25
56 45 0.00
November 26
58 39 0.00
November 27
62 39 0.00
November 28
61 40 0.00
November 29
57 46 0.00
November 30
55 48 0.00
December 1978 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
December 1
56 50 0.44
December 2
56 42 0.00
December 3
62 37 0.00
December 4
60 38 0.00
December 5
57 47 0.00
December 6
52 38 0.00
December 7
50 36 0.00
December 8
55 29 0.00
December 9
n/a 31 0.00
December 10
59 38 0.00
December 11
64 36 0.00
December 12
58 45 0.00
December 13
62 50 0.00
December 14
63 48 0.00
December 15
61 36 0.00
December 16
59 35 0.00
December 17
53 43 0.39
December 18
51 35 0.00
December 19
52 33 0.00
December 20
53 34 0.00
December 21
55 38 0.00
December 22
54 39 0.00
December 23
55 40 0.00
December 24
58 35 0.00
December 25
54 38 0.00
December 26
53 37 0.00
December 27
54 43 0.00
December 28
54 45 0.00
December 29
52 40 0.00
Weather Station Details
Years Station Coordinates
1939–2022 Half Moon Bay location