Napa Weather in 2021

Historical record of Napa, California weather for the year 2021 based on NOAA data.
Jump to Month:
Year:
2021 Napa Weather Extremes
Highest temperature 100 °F June 17
Lowest temperature 25 °F January 26
Highest daily low 60 °F June 13
Lowest daily high 45 °F December 28
Most daily precipitation 4.8 inches October 24
Total annual precipitation 20.5 inches -
Highest Temperatures in Napa in 2021
Rank Temperature Date
1 100 °F Jun 17
2 99 °F Aug 28
3 96 °F Sep 21
4 94 °F Aug 27
4 94 °F Jun 16
4 94 °F May 10
7 93 °F Sep 6
7 93 °F May 3
9 92 °F Oct 3
9 92 °F May 8
Lowest Temperatures in Napa in 2021
Rank Temperature Date
1 25 °F January 26
2 29 °F March 16
3 30 °F December 31
3 30 °F January 24
3 30 °F January 21
6 31 °F December 11
6 31 °F December 10
6 31 °F March 12
6 31 °F March 7
6 31 °F February 17
6 31 °F February 3
January 2021 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
59 33 0.00
53 49 0.23
54 47 0.01
61 39 0.18
57 34 0.00
57 36 0.06
61 42 0.00
62 36 0.05
60 36 0.00
57 35 0.00
62 33 0.00
60 42 0.00
64 44 0.00
67 41 0.00
67 39 0.00
74 39 0.00
73 37 0.00
80 44 0.00
69 53 0.00
67 34 0.00
60 30 0.00
56 43 0.21
60 35 0.00
52 30 0.10
56 32 0.00
51 25 0.66
51 46 0.65
57 44 0.41
55 41 0.23
59 41 0.00
65 44 0.01
February 2021 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
62 38 0.22
63 43 0.10
59 31 0.00
62 34 0.00
67 32 0.00
68 33 0.00
66 35 0.00
61 33 0.00
59 46 0.00
63 38 0.00
56 43 0.39
63 44 0.00
66 42 0.01
57 37 0.05
64 47 0.16
61 34 0.00
66 31 0.00
65 32 0.00
61 47 0.12
64 41 0.04
66 33 0.00
71 36 0.00
81 39 0.00
72 35 0.00
67 39 0.00
67 32 0.00
67 32 0.00
71 40 0.00
March 2021 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
65 34 0.00
67 33 0.00
63 36 0.00
62 36 0.00
65 37 0.17
61 39 0.02
64 31 0.00
59 43 0.00
59 39 0.20
56 39 0.31
59 38 0.02
72 31 0.00
61 33 0.00
57 42 0.20
56 33 0.02
58 29 0.00
56 40 0.00
55 47 0.46
63 46 0.00
62 32 0.00
69 32 0.00
68 36 0.00
68 37 0.00
70 41 0.00
66 40 0.00
76 37 0.00
75 38 0.00
76 40 0.00
69 36 0.00
80 38 0.00
82 45 0.00
April 2021 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
84 43 0.00
71 38 0.00
65 46 0.00
65 46 0.00
63 44 0.00
66 42 0.00
66 45 0.00
70 34 0.00
67 37 0.00
74 34 0.00
74 37 0.00
72 40 0.00
71 39 0.00
70 40 0.00
69 40 0.00
71 37 0.00
82 38 0.00
86 37 0.00
71 47 0.00
70 42 0.00
64 48 0.00
61 49 0.00
64 49 0.00
65 48 0.00
62 47 0.00
65 33 0.00
77 34 0.00
84 38 0.00
75 42 0.00
70 41 0.00
May 2021 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
76 47 0.00
82 41 0.00
93 42 0.00
85 49 0.00
81 46 0.00
75 48 0.00
77 45 0.00
92 44 0.00
86 52 0.00
94 47 0.00
78 45 0.00
73 43 0.00
67 48 0.00
66 50 0.00
63 51 0.00
65 51 0.00
68 50 0.00
80 40 0.00
72 48 0.00
71 38 0.03
74 37 0.00
75 48 0.00
69 45 0.00
77 44 0.00
77 54 0.00
74 44 0.00
80 44 0.00
70 50 0.00
69 50 0.00
80 53 0.00
84 49 0.00
June 2021 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
73 51 0.00
74 49 0.00
75 53 0.00
74 55 0.00
76 52 0.00
78 54 0.00
75 46 0.00
71 50 0.00
69 47 0.00
73 42 0.00
77 47 0.00
85 58 0.00
83 60 0.00
81 55 0.02
85 51 0.00
94 49 0.00
100 53 0.00
91 55 0.00
76 57 0.00
75 50 0.00
72 55 0.00
76 58 0.00
77 56 0.00
76 55 0.00
76 54 0.00
78 55 0.00
77 55 0.00
80 57 0.00
78 52 0.00
73 58 0.00
July 2021 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
72 56 0.00
74 55 0.00
75 54 0.00
75 56 0.00
76 56 0.00
79 54 0.00
74 52 0.00
85 56 0.00
87 54 0.00
81 56 0.00
73 54 0.00
71 53 0.00
69 52 0.00
71 52 0.00
70 54 0.00
73 54 0.00
80 56 0.00
79 51 0.00
79 54 0.00
76 57 0.00
75 53 0.00
72 56 0.00
78 49 0.00
75 54 0.00
75 53 0.00
70 54 0.00
89 54 0.00
82 53 0.00
79 57 0.00
78 54 0.00
77 55 0.00
August 2021 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
77 55 0.00
81 48 0.00
79 51 0.00
75 53 0.00
73 56 0.00
80 52 0.00
75 57 0.00
74 56 0.00
76 57 0.00
85 51 0.00
81 53 0.00
82 56 0.00
82 56 0.00
79 56 0.00
77 55 0.00
84 57 0.00
73 58 0.00
74 53 0.00
75 52 0.00
72 54 0.00
70 56 0.00
73 56 0.00
71 53 0.00
71 53 0.00
75 50 0.00
87 50 0.00
94 53 0.00
99 53 0.00
85 52 0.00
77 55 0.00
75 48 0.00
September 2021 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
69 52 0.00
71 54 0.00
76 51 0.00
83 45 0.00
91 45 0.00
93 48 0.00
87 51 0.00
88 57 0.00
77 56 0.00
76 57 0.00
78 53 0.00
83 50 0.00
81 50 0.00
77 49 0.00
72 54 0.00
69 54 0.00
69 56 0.00
70 57 0.00
81 52 0.00
89 45 0.00
96 51 0.00
83 51 0.00
88 45 0.00
78 52 0.00
73 51 0.00
74 55 0.00
77 53 0.00
83 48 0.00
79 42 0.00
88 44 0.00
October 2021 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
89 46 0.00
91 48 0.00
92 50 0.00
88 48 0.00
71 47 0.00
70 45 0.00
68 45 0.00
69 49 0.00
73 44 0.00
78 42 0.00
73 41 0.00
75 44 0.00
68 40 0.00
79 37 0.00
83 39 0.00
85 42 0.00
67 42 0.05
65 41 0.00
68 37 0.03
62 52 0.09
66 57 0.49
65 55 0.58
65 51 0.39
62 56 4.79
64 51 0.29
65 52 0.00
74 52 0.00
76 49 0.00
76 50 0.00
66 53 0.00
64 54 0.02
November 2021 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
62 55 0.11
69 53 0.00
72 47 0.00
68 45 0.09
65 41 0.00
63 47 0.00
63 37 0.00
63 38 0.62
62 50 0.38
66 49 0.00
70 45 0.00
68 46 0.00
67 46 0.00
59 49 0.00
58 46 0.00
62 42 0.00
65 39 0.00
60 41 0.00
59 47 0.00
66 39 0.00
67 36 0.00
66 36 0.00
63 35 0.00
64 35 0.00
63 33 0.00
63 36 0.00
66 38 0.00
67 42 0.00
66 41 0.00
68 39 0.00
December 2021 Napa Weather
Day High (°F) Low (°F) Precip. (inches)
67 42 0.00
66 38 0.00
53 49 0.00
54 48 0.00
56 39 0.00
51 40 0.01
58 43 0.00
54 45 0.01
58 37 0.00
59 31 0.00
55 31 0.00
53 47 0.95
59 43 2.34
52 34 0.09
54 35 0.83
58 40 0.08
51 32 0.00
49 32 0.00
47 36 0.00
48 42 0.00
48 42 0.30
50 43 0.14
57 49 0.76
56 45 0.07
51 42 0.85
49 34 0.25
52 35 0.24
45 35 0.02
47 43 0.27
52 35 0.00
55 30 0.00
Weather Station Details
Years Station Coordinates
1999–2024 Napa County Airport location
1901–1998 Napa State Hospital location