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Half Moon Bay Weather in 1984

Historical record of Half Moon Bay, California weather for the year 1984 based on NOAA data.
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1984 Half Moon Bay Weather Extremes
Highest temperature 85 °F September 26
Lowest temperature 30 °F January 13
Highest daily low 59 °F September 19
Lowest daily high 50 °F January 12
Most daily precipitation 2.3 inches November 11
Most daily snow none -
Total annual precipitation 23.7 inches -
Total annual snow none -
January 1984 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
January 1
65 44 0.00
January 2
63 46 0.00
January 3
66 44 0.00
January 4
66 44 0.00
January 5
62 45 0.00
January 6
58 41 0.00
January 7
59 50 0.00
January 8
60 44 0.00
January 9
51 44 0.00
January 10
51 43 0.00
January 11
61 42 0.00
January 12
50 40 0.00
January 13
56 30 0.00
January 14
62 42 0.00
January 15
55 48 0.00
January 16
59 41 0.11
January 17
54 36 0.00
January 18
57 n/a 0.00
January 19
57 41 0.00
January 20
52 44 0.15
January 21
57 43 0.00
January 22
57 43 0.00
January 23
57 45 0.00
January 24
61 43 0.00
January 25
63 43 0.00
January 26
69 58 0.00
January 27
71 52 0.00
January 28
71 52 0.00
January 29
71 52 0.00
January 30
63 47 0.00
January 31
60 44 0.00
February 1984 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
February 1
57 40 0.00
February 2
62 43 0.00
February 3
71 48 0.00
February 5
66 44 0.00
February 6
67 47 0.00
February 7
61 45 0.00
February 8
59 48 0.26
February 9
57 40 0.08
February 10
56 39 0.00
February 11
57 n/a 0.00
February 12
57 51 0.06
February 13
58 37 0.93
February 14
58 44 0.03
February 15
56 47 0.33
February 16
55 39 0.00
February 17
57 39 0.00
February 18
58 44 0.00
February 19
61 51 0.01
February 20
62 46 0.29
February 21
54 37 0.00
February 22
n/a 37 0.00
February 23
58 49 0.08
February 24
58 44 0.00
February 25
58 40 0.00
February 26
65 40 0.00
February 27
61 40 0.00
February 28
59 41 0.08
February 29
59 45 0.00
March 1984 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
March 1
62 48 0.00
March 2
61 41 0.00
March 4
76 42 0.00
March 5
65 41 0.00
March 6
63 44 0.00
March 7
63 42 0.00
March 8
59 49 0.00
March 9
61 52 0.00
March 11
63 45 n/a
March 12
60 53 0.19
March 13
59 53 0.80
March 14
59 49 0.24
March 15
60 n/a 0.54
March 16
54 41 0.00
March 17
60 42 0.00
March 18
60 45 0.01
March 19
73 43 0.00
March 20
60 48 0.00
March 21
59 41 0.00
March 22
61 42 0.00
March 23
63 50 0.00
March 24
60 41 0.00
March 25
61 44 0.02
March 26
59 41 0.00
March 27
61 43 0.00
March 28
59 45 0.00
March 29
58 41 0.00
March 30
54 44 0.25
March 31
58 42 0.02
April 1984 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
April 1
58 39 0.00
April 2
56 48 0.00
April 3
58 44 0.00
April 4
57 48 0.00
April 5
61 40 0.00
April 6
60 39 0.00
April 7
59 40 0.07
April 8
60 38 0.03
April 9
59 49 0.41
April 10
61 41 0.00
April 11
58 43 0.00
April 12
59 41 0.00
April 13
68 44 0.00
April 14
74 48 0.00
April 15
69 44 0.00
April 16
59 48 0.00
April 17
58 43 0.35
April 18
59 45 0.23
April 19
59 43 0.00
April 20
58 41 0.00
April 21
69 46 0.00
April 22
72 43 0.00
April 23
58 47 0.00
April 24
57 45 0.00
April 25
55 43 0.00
April 26
56 37 0.00
April 27
58 39 0.00
April 28
59 39 0.00
April 29
61 38 0.00
April 30
63 48 0.00
May 1984 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
May 1
63 49 0.02
May 2
58 42 0.17
May 3
64 50 0.00
May 4
61 41 0.00
May 6
61 39 0.00
May 7
67 45 0.00
May 8
64 47 0.01
May 9
61 48 0.00
May 10
61 50 0.00
May 11
63 52 0.00
May 12
64 50 0.00
May 13
63 49 0.00
May 14
58 47 0.00
May 15
59 40 0.00
May 16
59 48 0.00
May 17
59 42 0.00
May 18
61 48 0.00
May 20
61 43 0.00
May 21
60 44 0.00
May 22
65 49 0.00
May 23
61 48 0.00
May 24
58 45 0.00
May 25
57 51 0.00
May 26
73 n/a 0.00
May 27
70 47 0.00
May 28
65 49 0.00
May 29
61 50 0.00
May 30
64 43 0.00
May 31
65 43 0.00
June 1984 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
June 1
66 44 0.00
June 2
59 46 0.00
June 3
65 47 0.00
June 4
59 50 0.23
June 5
61 50 0.13
June 6
60 52 0.01
June 7
63 44 0.00
June 8
62 48 0.00
June 9
63 41 0.00
June 10
66 48 0.00
June 11
60 51 0.00
June 12
51 50 0.00
June 13
56 50 0.04
June 14
59 50 0.00
June 15
62 51 0.00
June 16
65 45 0.00
June 17
65 51 0.00
June 18
63 52 0.00
June 19
56 52 0.00
June 20
62 44 0.00
June 21
62 44 0.00
June 22
64 50 0.00
June 23
63 49 0.00
June 24
63 50 0.00
June 25
62 51 0.00
June 26
65 54 0.00
June 27
65 52 0.05
June 28
62 54 0.00
June 29
63 45 0.00
June 30
66 46 0.00
July 1984 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
July 1
70 54 0.00
July 2
65 53 0.00
July 3
66 53 0.00
July 4
65 54 0.02
July 5
62 55 0.02
July 6
65 48 0.00
July 7
67 53 0.00
July 8
67 42 0.00
July 9
65 53 0.00
July 10
65 52 0.00
July 11
66 43 0.00
July 12
68 50 0.00
July 13
70 56 0.00
July 14
71 57 0.00
July 15
70 54 0.00
July 16
69 58 0.00
July 17
66 58 0.00
July 18
68 58 0.00
July 19
72 59 0.00
July 20
65 55 0.00
July 21
68 56 0.00
July 22
70 48 0.00
July 23
69 56 0.00
July 24
69 49 0.00
July 25
68 48 0.00
July 26
66 56 0.00
July 27
69 n/a 0.00
July 28
62 51 0.00
July 29
66 52 0.02
July 30
65 53 0.00
July 31
64 54 0.00
August 1984 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
August 1
63 55 0.00
August 2
62 54 0.00
August 3
65 49 0.00
August 4
69 51 0.00
August 5
67 54 0.00
August 6
69 49 0.00
August 7
71 50 0.00
August 8
68 52 0.00
August 9
66 53 0.00
August 10
64 54 0.16
August 11
65 55 0.02
August 12
65 54 0.00
August 13
68 55 0.00
August 14
67 56 0.00
August 15
71 55 0.00
August 16
67 53 0.00
August 17
62 51 0.00
August 18
67 52 0.00
August 19
65 52 0.00
August 20
65 53 0.00
August 21
66 52 0.00
August 22
62 56 0.00
August 23
65 56 0.00
August 24
67 58 0.00
August 25
62 58 0.00
August 26
66 55 0.00
August 27
66 56 0.00
August 28
69 55 0.00
August 29
68 58 0.00
August 30
69 49 0.15
August 31
70 n/a 0.00
September 1984 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
September 1
69 42 0.00
September 2
68 55 0.00
September 3
76 47 0.00
September 4
69 54 0.00
September 5
65 56 0.00
September 6
67 50 0.00
September 7
64 54 0.00
September 8
75 55 0.00
September 9
73 53 0.00
September 10
67 49 0.00
September 11
67 48 0.00
September 12
69 47 0.00
September 13
71 51 0.00
September 14
71 50 0.00
September 15
69 51 0.00
September 16
71 54 0.00
September 17
72 56 0.00
September 18
71 59 0.10
September 19
70 59 0.04
September 20
64 n/a 0.00
September 21
68 42 0.00
September 22
69 46 0.00
September 23
69 44 0.00
September 24
77 46 0.00
September 25
82 50 0.00
September 26
85 51 0.00
September 27
74 51 0.00
September 28
74 51 0.00
September 29
77 56 0.04
September 30
67 50 0.00
October 1984 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
October 1
67 49 0.14
October 2
60 44 0.00
October 3
66 45 0.00
October 4
60 54 0.00
October 5
69 57 0.02
October 7
70 n/a 0.00
October 8
71 52 0.05
October 9
65 51 0.00
October 10
67 55 0.97
October 11
67 49 0.00
October 12
70 54 0.05
October 14
66 46 0.00
October 15
61 43 0.00
October 16
60 50 1.91
October 17
61 43 0.00
October 18
59 46 0.00
October 19
61 43 0.10
October 20
64 42 0.04
October 21
62 44 0.00
October 22
61 44 0.00
October 23
74 46 0.00
October 24
68 48 0.00
October 25
74 50 0.00
October 26
59 40 0.11
October 27
59 43 0.00
October 28
66 53 0.40
October 29
60 50 0.02
October 30
56 42 0.00
October 31
58 39 0.00
November 1984 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
November 1
60 39 0.00
November 2
60 45 0.43
November 3
63 44 0.00
November 4
69 52 0.00
November 5
60 55 0.39
November 6
60 45 0.02
November 7
56 50 1.34
November 8
59 42 0.14
November 9
61 48 0.02
November 10
60 53 0.84
November 11
62 50 2.26
November 12
60 47 0.00
November 13
61 52 0.00
November 14
61 49 0.05
November 15
61 54 0.33
November 16
63 46 0.03
November 17
63 45 0.32
November 18
60 43 0.00
November 19
60 44 0.21
November 20
56 40 0.19
November 21
60 40 0.00
November 22
60 41 0.00
November 23
58 51 1.31
November 24
58 42 0.11
November 25
58 40 0.00
November 26
56 45 0.00
November 27
58 51 1.76
November 28
59 40 0.05
November 29
57 n/a 0.00
November 30
59 42 0.06
December 1984 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
December 1
59 44 0.00
December 2
62 43 0.40
December 3
57 39 0.00
December 4
54 43 0.31
December 5
57 48 0.20
December 6
65 53 0.00
December 7
66 47 0.00
December 8
63 53 0.00
December 9
66 51 0.68
December 10
59 41 0.06
December 11
57 49 0.11
December 12
55 44 0.00
December 13
58 41 0.00
December 14
58 44 0.00
December 15
59 38 1.27
December 16
55 36 0.00
December 17
54 40 0.00
December 18
55 40 0.00
December 19
53 36 0.00
December 20
54 41 0.00
December 21
56 40 0.00
December 22
57 41 0.00
December 23
58 38 0.00
December 24
54 37 0.14
December 25
58 38 0.03
December 26
57 40 0.00
December 27
56 40 0.00
December 28
55 37 0.00
December 29
54 40 0.00
December 30
58 40 0.00
December 31
55 44 0.00
Weather Station Details
Years Station Coordinates
1939–2022 Half Moon Bay location