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

Date Time Temp RH Dewpt Windsp WindDir Barom Rain SolRad
10/22/2020 00:00 62.9 / 61.5
1.4
86 / 94
-8
58.6 / 59.8
-1.2
0.0 / 2.7
-2.7
NNW / SSE
30.170 / 30.194
-0.024
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 00:05 62.9 / 61.3
1.6
86 / 94
-8
58.6 / 59.6
-1.0
0.0 / 2.0
-2.0
NNW / SE
30.171 / 30.194
-0.023
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 00:10 62.9 / 61.2
1.7
86 / 94
-8
58.6 / 59.4
-0.8
0.0 / 2.5
-2.5
NNW / SE
30.167 / 30.191
-0.024
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 00:15 62.9 / 61.5
1.4
86 / 94
-8
58.6 / 59.8
-1.2
1.0 / 2.2
-1.2
NNW / NW
30.167 / 30.191
-0.024
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 00:20 62.8 / 61.5
1.3
86 / 94
-8
58.5 / 59.8
-1.3
1.0 / 2.5
-1.5
NNW / SE
30.165 / 30.189
-0.024
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 00:25 62.7 / 61.5
1.2
86 / 94
-8
58.5 / 59.8
-1.3
0.0 / 2.5
-2.5
NNW / SE
30.164 / 30.189
-0.025
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 00:30 62.6 / 61.5
1.1
86 / 94
-8
58.4 / 59.8
-1.4
0.0 / 2.9
-2.9
NNW / SE
30.162 / 30.186
-0.024
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 00:35 62.5 / 61.5
1.0
86 / 94
-8
58.3 / 59.8
-1.5
0.0 / 2.7
-2.7
NNW / SE
30.161 / 30.186
-0.025
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 00:40 62.5 / 61.3
1.2
86 / 94
-8
58.3 / 59.6
-1.3
0.0 / 2.9
-2.9
--- / SE
30.161 / 30.186
-0.025
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 00:45 62.5 / 61.5
1.0
86 / 94
-8
58.3 / 59.8
-1.5
1.0 / 2.5
-1.5
NNW / SSE
30.160 / 30.186
-0.026
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 00:50 62.4 / 61.3
1.1
86 / 94
-8
58.2 / 59.6
-1.4
0.0 / 2.5
-2.5
NNW / SSE
30.158 / 30.183
-0.025
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 00:55 62.3 / 61.2
1.1
86 / 94
-8
58.1 / 59.4
-1.3
0.0 / 2.5
-2.5
NNW / SE
30.157 / 30.180
-0.023
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 01:00 62.3 / 61.2
1.1
86 / 94
-8
58.1 / 59.4
-1.3
0.0 / 2.7
-2.7
--- / SE
30.156 / 30.180
-0.024
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 01:05 62.3 / 61.0
1.3
86 / 94
-8
58.1 / 59.2
-1.1
0.0 / 2.7
-2.7
--- / SSE
30.155 / 30.180
-0.025
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 01:10 62.3 / 60.8
1.5
86 / 94
-8
58.1 / 59.1
-1.0
0.0 / 2.5
-2.5
--- / SSE
30.154 / 30.180
-0.026
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 01:15 62.2 / 60.6
1.6
86 / 94
-8
58.0 / 58.9
-0.9
0.0 / 2.2
-2.2
NNW / SSE
30.152 / 30.177
-0.025
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 01:20 62.1 / 60.4
1.7
86 / 94
-8
57.9 / 58.7
-0.8
0.0 / 1.8
-1.8
NNW / SSE
30.153 / 30.177
-0.024
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 01:25 62.0 / 60.3
1.7
86 / 94
-8
57.8 / 58.5
-0.7
0.0 / 1.6
-1.6
--- / S
30.152 / 30.177
-0.025
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 01:30 61.9 / 60.1
1.8
86 / 94
-8
57.7 / 58.3
-0.6
0.0 / 1.1
-1.1
--- / S
30.151 / 30.177
-0.026
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 01:35 61.8 / 59.9
1.9
86 / 94
-8
57.6 / 58.2
-0.6
0.0 / 0.9
-0.9
--- / S
30.150 / 30.174
-0.024
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 01:40 61.7 / 59.7
2.0
86 / 94
-8
57.5 / 58.0
-0.5
0.0 / 0.4
-0.4
--- / S
30.148 / 30.174
-0.026
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 01:45 61.6 / 59.5
2.1
86 / 94
-8
57.4 / 57.8
-0.4
0.0 / 0.0
0.0
--- / S
30.149 / 30.174
-0.025
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 01:50 61.6 / 59.5
2.1
86 / 94
-8
57.4 / 57.8
-0.4
0.0 / 1.3
-1.3
--- / SSE
30.151 / 30.177
-0.026
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 01:55 61.6 / 59.7
1.9
86 / 94
-8
57.4 / 58.0
-0.6
0.0 / 1.6
-1.6
--- / SSE
30.150 / 30.177
-0.027
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 02:00 61.6 / 59.9
1.7
86 / 94
-8
57.4 / 58.2
-0.8
0.0 / 0.2
-0.2
--- / SSE
30.149 / 30.174
-0.025
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 02:05 61.4 / 59.9
1.5
86 / 94
-8
57.2 / 58.2
-1.0
0.0 / 0.0
0.0
--- / WNW
30.147 / 30.174
-0.027
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 02:10 61.2 / 59.7
1.5
86 / 94
-8
57.0 / 58.0
-1.0
0.0 / 0.4
-0.4
--- / S
30.146 / 30.174
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 02:15 60.9 / 59.5
1.4
86 / 94
-8
56.7 / 57.8
-1.1
0.0 / 0.7
-0.7
--- / SSW
30.145 / 30.174
-0.029
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 02:20 60.6 / 59.2
1.4
86 / 94
-8
56.4 / 57.5
-1.1
0.0 / 0.0
0.0
--- / SSW
30.143 / 30.171
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 02:25 60.4 / 59.0
1.4
86 / 94
-8
56.2 / 57.3
-1.1
0.0 / 0.7
-0.7
--- / NW
30.144 / 30.171
-0.027
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 02:30 60.4 / 59.0
1.4
86 / 94
-8
56.2 / 57.3
-1.1
0.0 / 0.0
0.0
--- / SSW
30.143 / 30.171
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 02:35 60.3 / 58.8
1.5
86 / 94
-8
56.1 / 57.1
-1.0
0.0 / 0.7
-0.7
--- / NW
30.143 / 30.171
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 02:40 60.3 / 58.8
1.5
86 / 94
-8
56.1 / 57.1
-1.0
0.0 / 0.2
-0.2
--- / WNW
30.143 / 30.171
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 02:45 60.3 / 59.0
1.3
87 / 94
-7
56.4 / 57.3
-0.9
0.0 / 0.0
0.0
--- / S
30.143 / 30.171
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 02:50 60.3 / 58.8
1.5
86 / 94
-8
56.1 / 57.1
-1.0
0.0 / 0.0
0.0
--- / S
30.143 / 30.171
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 02:55 60.2 / 58.8
1.4
86 / 94
-8
56.0 / 57.1
-1.1
0.0 / 0.0
0.0
--- / S
30.143 / 30.171
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 03:00 60.0 / 58.8
1.2
86 / 94
-8
55.8 / 57.1
-1.3
0.0 / 0.0
0.0
--- / S
30.142 / 30.171
-0.029
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 03:05 59.9 / 58.6
1.3
86 / 94
-8
55.7 / 56.9
-1.2
0.0 / 0.0
0.0
--- / SSW
30.142 / 30.171
-0.029
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 03:10 59.8 / 58.5
1.3
86 / 94
-8
55.6 / 56.7
-1.1
0.0 / 0.0
0.0
--- / SSE
30.141 / 30.171
-0.030
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 03:15 59.8 / 58.8
1.0
86 / 94
-8
55.6 / 57.1
-1.5
0.0 / 1.6
-1.6
--- / SE
30.141 / 30.171
-0.030
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 03:20 59.9 / 59.0
0.9
87 / 94
-7
56.0 / 57.3
-1.3
0.0 / 1.1
-1.1
--- / S
30.140 / 30.168
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 03:25 59.9 / 59.0
0.9
87 / 94
-7
56.0 / 57.3
-1.3
0.0 / 0.0
0.0
--- / S
30.139 / 30.168
-0.029
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 03:30 59.9 / 59.0
0.9
87 / 94
-7
56.0 / 57.3
-1.3
0.0 / 0.4
-0.4
--- / SSE
30.139 / 30.165
-0.026
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 03:35 59.9 / 58.8
1.1
87 / 94
-7
56.0 / 57.1
-1.1
0.0 / 0.2
-0.2
--- / NW
30.138 / 30.168
-0.030
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 03:40 59.8 / 58.6
1.2
87 / 94
-7
55.9 / 56.9
-1.0
0.0 / 1.3
-1.3
--- / SSE
30.138 / 30.168
-0.030
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 03:45 59.7 / 58.8
0.9
86 / 94
-8
55.5 / 57.1
-1.6
0.0 / 1.3
-1.3
--- / SSE
30.140 / 30.168
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 03:50 59.8 / 58.8
1.0
87 / 94
-7
55.9 / 57.1
-1.2
0.0 / 0.9
-0.9
--- / SSE
30.139 / 30.168
-0.029
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 03:55 59.8 / 59.0
0.8
87 / 94
-7
55.9 / 57.3
-1.4
0.0 / 1.8
-1.8
--- / SSE
30.140 / 30.168
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 04:00 59.9 / 59.2
0.7
87 / 94
-7
56.0 / 57.5
-1.5
0.0 / 1.3
-1.3
--- / SSE
30.139 / 30.168
-0.029
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 04:05 60.0 / 59.2
0.8
87 / 94
-7
56.1 / 57.5
-1.4
0.0 / 0.7
-0.7
--- / SW
30.139 / 30.168
-0.029
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 04:10 60.0 / 58.8
1.2
87 / 94
-7
56.1 / 57.1
-1.0
0.0 / 0.0
0.0
--- / ESE
30.140 / 30.168
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 04:15 60.0 / 58.6
1.4
87 / 94
-7
56.1 / 56.9
-0.8
0.0 / 0.2
-0.2
--- / SSW
30.140 / 30.168
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 04:20 59.9 / 58.5
1.4
87 / 94
-7
56.0 / 56.7
-0.7
0.0 / 0.0
0.0
--- / SSW
30.141 / 30.168
-0.027
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 04:25 59.8 / 58.3
1.5
87 / 94
-7
55.9 / 56.6
-0.7
0.0 / 0.0
0.0
--- / SSW
30.140 / 30.168
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 04:30 59.6 / 58.1
1.5
86 / 94
-8
55.4 / 56.4
-1.0
0.0 / 0.2
-0.2
--- / SSW
30.140 / 30.168
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 04:35 59.5 / 58.1
1.4
86 / 94
-8
55.3 / 56.4
-1.1
0.0 / 0.0
0.0
--- / SSW
30.138 / 30.165
-0.027
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 04:40 59.4 / 57.9
1.5
86 / 94
-8
55.2 / 56.2
-1.0
0.0 / 0.0
0.0
--- / SSW
30.138 / 30.156
-0.018
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 04:45 59.3 / 57.9
1.4
86 / 94
-8
55.1 / 56.2
-1.1
0.0 / 0.0
0.0
--- / SSW
30.138 / 30.162
-0.024
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 04:50 59.3 / 57.7
1.6
86 / 94
-8
55.1 / 56.0
-0.9
0.0 / 0.0
0.0
--- / SSE
30.138 / 30.165
-0.027
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 04:55 59.3 / 57.9
1.4
87 / 94
-7
55.4 / 56.2
-0.8
0.0 / 0.2
-0.2
--- / S
30.138 / 30.168
-0.030
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 05:00 59.3 / 58.1
1.2
87 / 94
-7
55.4 / 56.4
-1.0
0.0 / 0.0
0.0
--- / S
30.138 / 30.168
-0.030
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 05:05 59.2 / 58.1
1.1
87 / 94
-7
55.3 / 56.4
-1.1
0.0 / 0.2
-0.2
--- / SE
30.137 / 30.165
-0.028
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 05:10 59.2 / 58.3
0.9
87 / 94
-7
55.3 / 56.6
-1.3
0.0 / 0.2
-0.2
--- / S
30.139 / 30.165
-0.026
0.00 / 0.00
0.00
0 / 0
0
10/22/2020 05:15 59.2 / 58.5
0.7
87 / 94
-7
55.3 / 56.7
-1.4
0.0 / 0.4
-0.4
--- / SSE
30.138 / 30.168
-0.030
0.00 / 0.00
0.00
0 / 0
0
Average Diff --:-- 1.3 -7.7 -1.1 -1.0 --- -0.027 0.00 0

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