Historical Ranked Monthly Data for Sep - Max 1hr Hum Rise / %
Weather Variable:
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Top monthly mean
Rank
Value
Date
1
11
Sep 2025
2
11
Sep 2017
3
10
Sep 2020
4
10
Sep 2019
5
10
Sep 2018
6
9
Sep 2009
7
9
Sep 2012
8
9
Sep 2023
9
8
Sep 2022
Bottom monthly mean
Rank
Value
Date
1
7
Sep 2014
2
7
Sep 2010
3
7
Sep 2021
4
8
Sep 2024
5
8
Sep 2016
6
8
Sep 2013
7
8
Sep 2015
8
8
Sep 2011
9
8
Sep 2022
Max 1hr Hum Rise monthly extremes: highest and lowest monthly means. There are 17 valid months for the chosen period from 2009 to present for Sep in London, NW3.
Top monthly lowest
Rank
Value
Date
1
5
Sep 2019
2
5
Sep 2012
3
4
Sep 2025
4
4
Sep 2018
5
4
Sep 2015
6
4
Sep 2009
7
3
Sep 2023
8
3
Sep 2022
9
3
Sep 2017
Bottom monthly lowest
Rank
Value
Date
1
1
Sep 2014
2
2
Sep 2020
3
2
Sep 2021
4
2
Sep 2024
5
3
Sep 2010
6
3
Sep 2011
7
3
Sep 2013
8
3
Sep 2016
9
3
Sep 2017
Max 1hr Hum Rise monthly extremes: highest and lowest monthly minima. There are 17 valid months for the chosen period from 2009 to present for Sep in London, NW3.
Top monthly highest
Rank
Value
Date
1
32
Sep 2019
2
24
Sep 2025
3
24
Sep 2022
4
22
Sep 2024
5
21
Sep 2017
6
20
Sep 2015
7
19
Sep 2023
8
19
Sep 2020
9
19
Sep 2012
Bottom monthly highest
Rank
Value
Date
1
11
Sep 2014
2
12
Sep 2010
3
14
Sep 2021
4
15
Sep 2016
5
16
Sep 2013
6
17
Sep 2009
7
17
Sep 2018
8
19
Sep 2011
9
19
Sep 2012
Max 1hr Hum Rise monthly extremes: highest and lowest monthly maxima. There are 17 valid months for the chosen period from 2009 to present for Sep in London, NW3.