Napa Weather in 2017

Historical record of Napa, California weather for the year 2017 based on NOAA data.
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Year:
2017 Napa Weather Extremes
Highest temperature 107 °F September 2
Lowest temperature 25 °F December 22
Highest daily low 66 °F September 5
Lowest daily high 51 °F January 6
Most daily precipitation 2.2 inches January 8
Total annual precipitation 31.2 inches -
Highest Temperatures in Napa in 2017
Rank Temperature Date
1 107 °F Sep 2
2 106 °F Sep 1
3 103 °F Jul 16
3 103 °F Jun 18
5 100 °F Jul 7
6 98 °F Sep 11
6 98 °F Aug 26
8 97 °F Aug 31
8 97 °F Jun 16
10 96 °F Sep 10
Lowest Temperatures in Napa in 2017
Rank Temperature Date
1 25 °F December 22
2 27 °F December 14
2 27 °F January 6
4 28 °F December 13
4 28 °F December 12
6 29 °F December 26
7 30 °F December 28
7 30 °F December 27
7 30 °F December 21
7 30 °F December 16
7 30 °F December 8
January 2017 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
56 34 0.00
54 40 0.30
57 47 1.04
57 47 0.43
52 31 0.00
51 27 0.01
60 44 0.63
64 57 2.20
59 49 0.36
59 52 2.13
56 44 0.32
53 39 0.32
57 35 0.00
58 33 0.00
53 36 0.00
54 33 0.00
53 33 0.00
54 46 1.43
58 47 0.46
56 47 0.79
57 47 0.46
58 46 1.14
53 39 0.09
59 38 0.00
55 33 0.00
57 35 0.00
61 36 0.00
63 34 0.00
62 34 0.00
63 35 0.00
63 36 0.00
February 2017 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
56 42 0.00
62 49 0.33
61 55 1.06
62 47 0.17
61 47 0.52
60 56 0.80
63 57 0.86
64 57 0.62
62 57 0.95
63 48 0.00
65 39 0.00
67 40 0.00
65 40 0.00
69 41 0.00
64 49 0.00
66 50 0.34
58 52 0.77
61 50 0.04
58 49 0.18
60 54 2.07
61 46 0.22
58 37 0.00
55 32 0.00
55 32 0.00
58 36 0.00
59 31 0.00
57 34 0.00
60 32 0.00
March 2017 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
64 35 0.00
68 35 0.00
67 38 0.00
62 44 0.72
55 37 0.15
56 39 0.27
61 38 0.00
69 39 0.00
73 43 0.00
71 50 0.00
74 44 0.00
76 41 0.00
80 41 0.00
80 45 0.00
65 49 0.00
72 49 0.00
75 43 0.00
67 48 0.00
66 54 0.00
62 53 0.79
67 53 0.95
63 47 0.28
63 39 0.00
60 52 0.48
66 44 0.01
63 50 0.10
67 44 0.00
78 41 0.00
77 45 0.00
70 45 0.00
76 45 0.00
April 2017 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
77 45 0.00
78 49 0.00
76 40 0.00
69 45 0.00
71 46 0.00
65 50 1.07
63 49 0.78
59 41 0.07
63 38 0.00
67 39 0.00
66 52 0.05
66 55 0.17
62 45 0.09
66 36 0.00
68 38 0.00
57 45 0.48
63 55 0.15
69 50 0.06
68 42 0.18
71 48 0.00
77 44 0.00
69 43 0.00
70 50 0.00
65 52 0.00
70 51 0.00
69 55 0.01
73 43 0.00
78 42 0.00
81 52 0.00
81 46 0.00
May 2017 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
91 47 0.00
93 53 0.00
91 56 0.00
75 54 0.00
74 52 0.00
68 48 0.00
76 46 0.00
75 49 0.00
79 49 0.00
67 53 0.00
68 51 0.00
69 48 0.00
70 38 0.00
69 39 0.00
73 40 0.00
68 49 0.00
74 44 0.00
83 42 0.00
88 46 0.00
87 49 0.00
87 49 0.00
80 51 0.00
76 51 0.00
68 54 0.00
67 55 0.00
69 54 0.00
73 50 0.00
72 53 0.00
71 53 0.00
73 53 0.00
79 54 0.00
June 2017 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
81 48 0.00
83 49 0.00
78 55 0.00
81 51 0.00
81 47 0.00
76 56 0.00
74 55 0.00
67 59 0.22
76 55 0.00
75 50 0.00
73 46 0.04
74 43 0.00
81 46 0.00
86 50 0.00
91 51 0.00
97 60 0.00
94 61 0.00
103 63 0.00
88 62 0.00
84 60 0.00
86 58 0.00
91 61 0.00
81 60 0.00
81 58 0.00
80 59 0.00
81 59 0.00
80 56 0.00
75 54 0.00
77 55 0.00
79 56 0.00
July 2017 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
77 49 0.00
74 57 0.00
77 52 0.00
80 54 0.00
81 55 0.00
88 51 0.00
100 53 0.00
93 59 0.00
79 56 0.00
78 58 0.00
76 57 0.00
77 53 0.00
77 57 0.00
80 58 0.00
92 54 0.00
103 55 0.00
86 58 0.00
78 51 0.00
83 51 0.00
82 54 0.00
83 50 0.00
89 56 0.00
82 57 0.00
75 57 0.00
80 56 0.00
83 57 0.00
84 55 0.00
76 51 0.00
71 54 0.00
77 46 0.00
n/a n/a 0.00
August 2017 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
84 58 0.00
90 52 0.00
86 61 0.00
81 61 0.00
80 58 0.00
79 57 0.00
77 58 0.00
75 58 0.00
74 59 0.00
75 56 0.00
77 60 0.00
76 59 0.00
75 57 0.00
71 58 0.00
71 55 0.00
76 56 0.00
79 57 0.00
78 57 0.00
76 56 0.00
76 60 0.00
77 58 0.00
81 56 0.00
76 56 0.00
76 57 0.00
79 56 0.00
98 48 0.00
93 55 0.00
89 58 0.00
76 58 0.00
79 51 0.00
97 48 0.00
September 2017 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
106 57 0.00
107 61 0.00
94 62 0.00
82 60 0.00
87 66 0.00
80 60 0.00
74 59 0.00
78 59 0.00
80 n/a 0.00
96 56 0.00
98 62 0.02
86 58 0.00
75 63 0.00
77 52 0.00
78 46 0.00
76 45 0.00
75 48 0.00
80 53 0.00
79 45 0.00
78 51 0.00
74 41 0.00
73 39 0.00
84 43 0.00
88 40 0.00
87 43 0.00
95 47 0.00
93 50 0.00
86 47 0.00
74 46 0.00
78 50 0.00
October 2017 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
82 43 0.00
80 43 0.00
77 40 0.00
78 42 0.00
81 39 0.00
86 40 0.00
85 43 0.00
85 43 0.00
83 49 0.00
79 45 0.00
70 43 0.00
71 38 0.00
74 35 0.00
82 41 0.00
85 40 0.00
81 44 0.00
81 44 0.00
69 37 0.00
63 53 0.19
64 43 0.00
73 38 0.00
74 41 0.00
83 45 0.00
92 53 0.00
89 46 0.00
90 46 0.00
87 45 0.00
75 44 0.00
63 52 0.00
66 43 0.00
66 41 0.00
November 2017 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
69 39 0.00
67 40 0.00
66 49 0.00
63 38 0.55
63 34 0.00
63 39 0.00
67 34 0.00
65 43 0.21
66 57 0.10
64 45 0.00
63 41 0.00
63 47 0.00
67 53 0.01
64 43 0.00
61 49 0.00
59 53 1.40
64 34 0.00
61 32 0.00
63 34 0.00
62 53 0.00
70 51 0.00
69 44 0.00
65 45 0.00
69 47 0.00
66 51 0.00
63 52 0.35
59 39 0.16
60 35 0.00
62 32 0.00
63 33 0.00
December 2017 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
60 33 0.00
60 35 0.01
60 41 0.00
64 42 0.00
65 34 0.00
64 31 0.00
68 35 0.00
63 30 0.00
65 32 0.00
66 34 0.00
66 34 0.00
63 28 0.00
60 28 0.00
63 27 0.00
60 33 0.00
65 30 0.00
66 37 0.00
63 34 0.00
56 32 0.00
57 32 0.05
61 30 0.00
55 25 0.00
54 35 0.00
56 39 0.00
57 35 0.00
61 29 0.00
59 30 0.00
63 30 0.00
62 34 0.00
63 31 0.00
57 32 0.00
Weather Station Details
Years Station Coordinates
1999–2024 Napa County Airport location
1901–1998 Napa State Hospital location