This table compares data from Davis Vantage Pro2 and WeatherFlow Tempest weather stations installed at my home.
The data entries list Davis / WeatherFlow / Difference.

Compare Data From:

Date Time (ET) Temp RH Dewpt Windsp WindDir Barom 5min Rain Total Rain SolRad
2/25/2026 00:05 39.6 / 40.5
-0.9
53 / 50
3
23.9 / 23.3
0.6
8.0 / 7.6
0.4
SSW / W
29.646 / 29.692
-0.046
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 00:10 39.8 / 40.6
-0.8
53 / 50
3
24.0 / 23.4
0.6
8.0 / 5.6
2.4
SSW / WSW
29.648 / 29.689
-0.041
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 00:15 39.8 / 40.6
-0.8
53 / 50
3
24.0 / 23.4
0.6
7.0 / 6.9
0.1
SSW / WSW
29.647 / 29.689
-0.042
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 00:20 39.8 / 40.6
-0.8
53 / 50
3
24.0 / 23.4
0.6
7.0 / 6.5
0.5
SSW / WSW
29.645 / 29.689
-0.044
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 00:25 39.9 / 40.8
-0.9
53 / 50
3
24.1 / 23.6
0.5
7.0 / 4.7
2.3
SSW / SW
29.644 / 29.689
-0.045
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 00:30 40.0 / 41.0
-1.0
53 / 50
3
24.2 / 23.8
0.4
7.0 / 4.9
2.1
S / WSW
29.645 / 29.689
-0.044
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 00:35 40.2 / 41.0
-0.8
53 / 51
2
24.4 / 24.2
0.2
7.0 / 3.8
3.2
SSW / SW
29.644 / 29.689
-0.045
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 00:40 40.3 / 41.2
-0.9
53 / 50
3
24.5 / 23.9
0.6
5.0 / 2.7
2.3
SSW / WSW
29.645 / 29.695
-0.050
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 00:45 40.4 / 41.4
-1.0
53 / 50
3
24.6 / 24.1
0.5
5.0 / 4.7
0.3
S / WSW
29.647 / 29.695
-0.048
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 00:50 40.4 / 41.4
-1.0
53 / 50
3
24.6 / 24.1
0.5
6.0 / 4.9
1.1
SSW / WSW
29.648 / 29.692
-0.044
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 00:55 40.6 / 41.5
-0.9
53 / 50
3
24.8 / 24.3
0.5
5.0 / 5.8
-0.8
SSW / WSW
29.650 / 29.695
-0.045
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 01:00 40.7 / 41.7
-1.0
53 / 50
3
24.9 / 24.4
0.5
5.0 / 5.8
-0.8
SSW / W
29.647 / 29.692
-0.045
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 01:05 40.8 / 41.7
-0.9
53 / 50
3
25.0 / 24.4
0.6
4.0 / 2.5
1.5
S / SW
29.646 / 29.689
-0.043
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 01:10 40.9 / 41.9
-1.0
53 / 50
3
25.1 / 24.6
0.5
4.0 / 3.8
0.2
SSW / SSW
29.647 / 29.692
-0.045
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 01:15 41.0 / 41.9
-0.9
53 / 50
3
25.2 / 24.6
0.6
5.0 / 4.5
0.5
SSW / SW
29.640 / 29.689
-0.049
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 01:20 41.3 / 42.3
-1.0
53 / 49
4
25.4 / 24.4
1.0
6.0 / 6.7
-0.7
SSW / SW
29.644 / 29.687
-0.043
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 01:25 41.6 / 42.4
-0.8
52 / 49
3
25.3 / 24.6
0.7
8.0 / 5.6
2.4
SSW / SSW
29.640 / 29.684
-0.044
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 01:30 41.8 / 42.6
-0.8
52 / 49
3
25.4 / 24.8
0.6
8.0 / 7.6
0.4
S / SSW
29.632 / 29.678
-0.046
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 01:35 42.1 / 43.0
-0.9
51 / 48
3
25.3 / 24.4
0.9
9.0 / 5.8
3.2
S / SSW
29.629 / 29.678
-0.049
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 01:40 42.4 / 43.2
-0.8
50 / 48
2
25.1 / 24.8
0.3
9.0 / 8.5
0.5
SSW / SW
29.625 / 29.675
-0.050
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 01:45 42.5 / 43.3
-0.8
50 / 48
2
25.1 / 24.9
0.2
10.0 / 6.7
3.3
S / SW
29.628 / 29.675
-0.047
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 01:50 42.8 / 43.7
-0.9
50 / 47
3
25.4 / 24.8
0.6
10.0 / 7.2
2.8
S / SW
29.626 / 29.672
-0.046
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 01:55 43.0 / 43.9
-0.9
49 / 47
2
25.1 / 24.8
0.3
11.0 / 6.7
4.3
S / SSW
29.627 / 29.675
-0.048
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 02:00 43.1 / 44.1
-1.0
49 / 47
2
25.2 / 25.1
0.1
9.0 / 6.7
2.3
SSW / SSW
29.629 / 29.678
-0.049
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 02:05 43.1 / 44.1
-1.0
49 / 47
2
25.2 / 25.1
0.1
7.0 / 4.7
2.3
S / SSW
29.633 / 29.684
-0.051
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 02:10 43.2 / 44.1
-0.9
49 / 47
2
25.3 / 25.1
0.2
8.0 / 7.2
0.8
S / WSW
29.634 / 29.684
-0.050
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 02:15 43.2 / 44.1
-0.9
49 / 46
3
25.3 / 24.6
0.7
7.0 / 3.6
3.4
SSW / WSW
29.635 / 29.684
-0.049
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 02:20 43.2 / 44.2
-1.0
49 / 47
2
25.3 / 25.3
0.0
5.0 / 6.0
-1.0
SSW / WSW
29.636 / 29.687
-0.051
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 02:25 43.2 / 44.2
-1.0
49 / 46
3
25.3 / 24.7
0.6
5.0 / 4.2
0.8
S / W
29.639 / 29.689
-0.050
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 02:30 43.3 / 44.2
-0.9
49 / 46
3
25.4 / 24.7
0.7
5.0 / 4.0
1.0
S / SSW
29.642 / 29.689
-0.047
0.00 / 0.00
0.00
0.00 / 0.00
0.00
0 / 0
0
2/25/2026 02:35 43.3 / no data 49 / no data 25.4 / no data 4.0 / no data SSW / no data 29.642 / no data 0.00 / no data 0.00 / no data 0 / no data
2/25/2026 02:40 43.4 / no data 49 / no data 25.5 / no data 4.0 / no data S / no data 29.642 / no data 0.00 / no data 0.00 / no data 0 / no data
2/25/2026 02:45 43.4 / no data 49 / no data 25.5 / no data 4.0 / no data SSW / no data 29.643 / no data 0.00 / no data 0.00 / no data 0 / no data
Average Diff --:-- -0.9 2.8 0.5 1.4 --- -0.047 0.00 --- 0

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