Half Moon Bay Weather in 2023

Historical record of Half Moon Bay, California weather for the year 2023 based on NOAA data.
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2023 Half Moon Bay Weather Extremes
Highest temperature 90 °F October 5
Lowest temperature 30 °F February 18
Highest daily low 61 °F August 25
Lowest daily high 50 °F February 27
Most daily precipitation 1.9 inches January 5
Total annual precipitation 29.8 inches -
Highest Temperatures in Half Moon Bay in 2023
Rank Temperature Date
1 90 °F Oct 5
2 85 °F Oct 6
3 81 °F Oct 4
4 74 °F Nov 1
4 74 °F Oct 31
4 74 °F Oct 30
4 74 °F Sep 26
4 74 °F Sep 25
9 72 °F Nov 14
9 72 °F Nov 3
9 72 °F Oct 29
9 72 °F Aug 24
Lowest Temperatures in Half Moon Bay in 2023
Rank Temperature Date
1 30 °F February 18
1 30 °F February 16
3 31 °F March 27
3 31 °F February 7
3 31 °F February 1
3 31 °F January 31
7 32 °F February 15
7 32 °F February 2
9 33 °F March 2
10 34 °F April 13
10 34 °F February 25
10 34 °F February 23
10 34 °F February 10
10 34 °F January 22
January 2023 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
January 1
56 43 0.19
January 2
53 41 0.05
January 3
55 47 0.61
January 4
60 46 0.25
January 5
60 50 1.93
January 6
60 49 0.01
January 7
60 53 0.01
January 8
60 50 0.61
January 9
58 54 1.04
January 10
57 46 0.41
January 11
57 51 0.31
January 12
65 52 0.02
January 13
60 54 0.62
January 14
57 53 1.07
January 15
55 50 0.39
January 16
54 45 0.90
January 17
54 38 0.04
January 18
57 40 0.00
January 19
56 39 0.07
January 20
55 36 0.00
January 21
n/a n/a n/a
January 22
60 34 0.00
January 23
61 49 0.00
January 24
65 36 0.00
January 25
67 37 0.00
January 26
67 42 0.00
January 27
67 36 0.00
January 28
54 38 0.00
January 29
53 48 0.02
January 30
54 40 0.00
January 31
60 31 0.00
February 2023 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
February 1
60 31 0.00
February 2
60 32 0.00
February 3
59 50 0.79
February 4
58 50 0.23
February 5
58 48 0.57
February 6
56 35 0.03
February 7
56 31 0.00
February 8
57 37 0.00
February 9
60 40 0.00
February 10
60 34 0.00
February 11
55 41 0.17
February 12
56 36 0.01
February 13
56 45 0.00
February 14
50 44 0.00
February 15
57 32 0.00
February 16
57 30 0.00
February 17
61 37 0.00
February 18
60 30 0.00
February 19
59 35 0.00
February 20
58 36 0.00
February 21
57 40 0.00
February 22
51 43 0.00
February 23
50 34 0.12
February 24
50 40 0.78
February 25
50 34 0.00
February 26
50 38 0.17
February 27
50 36 0.90
February 28
53 36 0.51
March 2023 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
March 1
52 40 0.10
March 2
52 33 0.01
March 3
55 43 0.00
March 4
53 43 0.11
March 5
52 42 0.25
March 6
54 35 0.19
March 7
53 35 0.17
March 8
53 38 0.12
March 9
52 37 0.19
March 10
56 49 0.82
March 11
57 41 0.04
March 12
57 52 1.37
March 13
60 50 0.07
March 14
58 53 0.51
March 15
54 38 0.03
March 16
54 38 0.00
March 17
60 39 0.00
March 18
62 48 0.00
March 19
64 42 0.65
March 20
56 47 0.04
March 21
56 45 0.55
March 22
55 46 1.26
March 23
54 49 0.00
March 24
54 44 0.08
March 25
54 35 0.00
March 26
54 36 0.00
March 27
53 31 0.00
March 28
53 46 1.56
March 29
52 44 0.29
March 30
54 40 0.03
March 31
56 38 0.00
April 2023 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
April 1
56 36 0.00
April 2
56 48 0.00
April 3
54 44 0.00
April 4
54 37 0.00
April 5
54 39 0.00
April 6
57 38 0.00
April 7
58 48 0.19
April 8
58 45 0.01
April 9
62 40 0.00
April 10
64 44 0.00
April 11
57 52 0.10
April 12
56 47 0.01
April 13
55 34 0.00
April 14
55 48 0.00
April 15
54 48 0.00
April 16
55 48 0.00
April 17
55 49 0.00
April 18
55 40 0.05
April 19
56 38 0.01
April 20
58 37 0.00
April 21
62 42 0.00
April 22
60 47 0.00
April 23
56 50 0.02
April 24
56 43 0.00
April 25
56 45 0.00
April 26
56 44 0.00
April 27
56 42 0.00
April 28
57 48 0.00
April 29
56 48 0.01
April 30
57 50 0.00
May 2023 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
May 1
57 50 0.00
May 2
58 46 0.36
May 3
58 47 0.82
May 4
57 45 0.35
May 5
58 49 0.00
May 6
59 51 0.19
May 7
58 45 0.00
May 8
60 45 0.03
May 9
59 48 0.00
May 10
59 50 0.00
May 11
58 53 0.00
May 12
58 52 0.00
May 13
59 51 0.00
May 14
61 49 0.00
May 15
62 53 0.00
May 16
60 51 0.00
May 17
60 51 0.00
May 18
59 52 0.00
May 19
58 53 0.00
May 20
58 52 0.05
May 21
57 52 0.07
May 22
59 51 0.00
May 23
62 50 0.00
May 24
61 50 0.00
May 25
60 51 0.00
May 26
59 52 0.02
May 27
58 52 0.01
May 28
58 53 0.01
May 29
63 52 0.00
May 30
62 47 0.01
May 31
59 52 0.00
June 2023 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
June 1
58 52 0.00
June 2
59 52 0.00
June 3
59 52 0.00
June 4
59 47 0.00
June 5
63 51 0.00
June 6
62 54 0.01
June 7
63 52 0.00
June 8
64 48 0.00
June 9
61 48 0.00
June 10
59 50 0.00
June 11
60 53 0.00
June 12
63 53 0.05
June 13
63 55 0.01
June 14
60 54 0.00
June 15
64 53 0.01
June 16
62 56 0.00
June 17
62 54 0.00
June 18
61 55 0.00
June 19
61 54 0.00
June 20
61 42 0.00
June 21
61 50 0.00
June 22
63 53 0.00
June 23
63 54 0.02
June 24
62 55 0.00
June 25
61 54 0.00
June 26
59 53 0.00
June 27
56 52 0.05
June 28
56 51 0.03
June 29
57 52 0.02
June 30
57 51 0.00
July 2023 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
July 1
59 50 0.00
July 2
62 50 0.00
July 3
63 52 0.00
July 4
63 54 0.00
July 5
62 54 0.00
July 6
63 55 0.00
July 7
60 53 0.04
July 8
59 54 0.00
July 9
59 53 0.02
July 10
59 52 0.03
July 11
58 51 0.00
July 12
58 53 0.02
July 13
59 52 0.01
July 14
61 53 0.00
July 15
59 54 0.01
July 16
59 52 0.00
July 17
62 55 0.00
July 18
63 53 0.00
July 19
59 54 0.00
July 20
58 53 0.01
July 21
60 52 0.00
July 22
60 49 0.00
July 23
60 50 0.00
July 24
n/a n/a n/a
July 25
62 54 n/a
July 26
60 52 0.00
July 27
61 56 0.00
July 28
61 54 0.00
July 29
62 54 0.00
July 30
62 54 0.00
July 31
63 56 0.00
August 2023 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
August 1
61 56 0.00
August 2
60 53 0.04
August 3
61 56 0.00
August 4
59 55 0.10
August 5
61 55 0.01
August 6
61 54 0.01
August 7
63 48 0.00
August 8
67 54 0.00
August 9
66 55 0.03
August 10
64 54 0.01
August 11
64 56 0.01
August 12
64 58 0.00
August 13
63 56 0.01
August 14
64 56 0.00
August 15
64 57 0.00
August 16
62 56 0.00
August 17
64 57 0.00
August 18
69 61 0.00
August 19
70 59 0.00
August 20
66 58 0.01
August 21
67 60 0.03
August 22
68 60 0.00
August 23
69 57 0.00
August 24
72 57 0.00
August 25
71 61 0.00
August 26
65 57 0.00
August 27
64 56 0.00
August 28
64 47 0.00
August 29
66 50 0.00
August 30
68 47 0.00
August 31
69 48 0.00
September 2023 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
September 1
64 58 0.08
September 2
65 54 0.00
September 3
66 54 0.00
September 4
69 59 0.00
September 5
62 54 0.00
September 6
67 56 0.00
September 7
67 57 0.00
September 8
62 47 0.00
September 9
63 54 0.00
September 10
61 54 0.00
September 11
63 45 0.00
September 12
62 58 0.00
September 13
63 56 0.00
September 14
65 56 0.01
September 15
65 59 0.02
September 16
67 59 0.00
September 17
66 55 0.00
September 18
66 52 0.00
September 19
66 56 0.00
September 20
67 58 0.00
September 21
67 49 0.00
September 22
66 54 0.00
September 23
64 52 0.00
September 24
65 51 0.00
September 25
74 49 0.00
September 26
74 58 0.12
September 27
68 49 0.00
September 28
69 54 0.00
September 29
64 49 0.01
September 30
62 56 0.00
October 2023 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
October 1
62 47 0.01
October 2
62 48 0.00
October 3
61 46 0.00
October 4
81 50 0.00
October 5
90 53 0.00
October 6
85 53 0.00
October 7
71 51 0.00
October 8
58 53 0.00
October 9
65 56 0.01
October 10
65 57 0.09
October 11
66 56 0.02
October 12
67 43 0.00
October 13
63 44 0.00
October 14
65 55 0.00
October 15
63 53 0.00
October 16
65 45 0.00
October 17
67 55 0.03
October 18
67 48 0.00
October 19
68 47 0.00
October 20
67 56 0.01
October 21
63 47 0.00
October 22
67 52 0.08
October 23
63 56 0.07
October 24
59 55 0.00
October 25
61 55 0.00
October 26
64 40 0.02
October 27
61 39 0.00
October 28
65 40 0.00
October 29
72 39 0.00
October 30
74 39 0.00
October 31
74 44 0.00
November 2023 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
November 1
74 48 0.00
November 2
68 44 0.00
November 3
72 48 0.00
November 4
n/a 51 0.00
November 5
67 50 0.00
November 6
63 58 0.29
November 7
61 48 0.00
November 8
68 40 0.00
November 9
62 37 0.00
November 10
66 39 0.00
November 11
66 44 0.00
November 12
63 44 0.00
November 13
62 46 0.00
November 14
72 46 0.01
November 15
69 50 0.00
November 16
67 54 0.30
November 17
67 54 0.15
November 18
62 58 0.72
November 19
61 43 0.05
November 20
66 46 0.00
November 21
66 46 0.00
November 22
66 47 0.00
November 23
68 43 0.00
November 24
60 40 0.00
November 25
60 41 0.00
November 26
63 41 0.00
November 27
65 50 0.00
November 28
64 43 0.00
November 29
61 50 0.26
November 30
59 43 0.00
December 2023 Half Moon Bay Weather
Day High (°F) Low (°F) Precip. (inches)
December 1
58 41 0.00
December 2
58 50 0.51
December 3
60 53 0.01
December 4
64 45 0.00
December 5
65 46 0.00
December 6
60 43 0.21
December 7
60 43 0.14
December 8
57 38 0.01
December 9
60 39 0.00
December 10
61 44 0.00
December 11
60 38 0.00
December 12
58 48 0.00
December 13
63 38 0.00
December 14
62 41 0.00
December 15
65 49 0.00
December 16
68 52 0.00
December 17
69 50 0.01
December 18
63 51 0.70
December 19
61 57 0.27
December 20
59 51 1.25
December 21
60 53 0.00
December 22
60 48 0.00
December 23
60 41 0.01
December 24
59 37 0.00
December 25
57 42 0.00
December 26
58 45 0.00
December 27
60 46 0.00
December 28
62 54 0.06
December 29
n/a n/a n/a
December 30
63 53 n/a
December 31
58 45 0.02
Weather Station Details
Years Station Coordinates
1939–2024 Half Moon Bay location