Climate


Monthly

Month JanFebMarAprMayJunJulAugSepOctNovDec
Temperature - average 22.3
22.3
22.7
22.7
21.7
21.7
18.7
18.7
16.9
16.9
13.8
13.8
13.5
13.5
16.9
16.9
20.2
20.2
21.4
21.4
22.0
22.0
21.8
21.8
Average max 29
29
29.5
29.5
28.3
28.3
24.7
24.7
23.4
23.4
20.2
20.2
20.4
20.4
23.5
23.5
27.2
27.2
28.6
28.6
29
29
27.8
27.8
Average min 17.3
17.3
17.6
17.6
16.7
16.7
13.9
13.9
11.1
11.1
8
8
7.1
7.1
10.7
10.7
13.8
13.8
15.2
15.2
16.2
16.2
16.9
16.9
Frost days
min < 0°C
0.00.00.00.00.00.00.00.00.00.00.00.0
Ice days
max < 0°C
0.00.00.00.00.00.00.00.00.00.00.00.0
Summer days
max > 25°C
20.022.326.815.57.81.01.711.017.820.325.519.5
Tropical days
max > 30°C
8.812.010.32.00.00.00.00.05.511.014.810.0
Tropical nights
min > 20°C
2.00.80.80.00.00.00.00.00.82.01.82.5
Absolute maximum 35.8
35.8
35.2
35.2
34.4
34.4
32.3
32.3
28.8
28.8
25.8
25.8
27.3
27.3
29.6
29.6
34.2
34.2
35.2
35.2
35.6
35.6
37.5
37.5
Absolute minimum 12.9
12.9
13.9
13.9
12.5
12.5
8.4
8.4
4.2
4.2
1.5
1.5
0.1
0.1
1.2
1.2
6.3
6.3
7.3
7.3
7.7
7.7
11.2
11.2
Average first frost
Average last frost
Average precipitation 124.479.644.9102.54.45.00.10.08.760.8132.7192.5
Wet days 10.89.09.58.51.32.30.70.02.05.512.313.0



Frost days

JanFebMarAprMayJunJulAugSepOctNovDec Total
20180000000000000
20190000000000000
20200000000000000
20210000000000000
20220000000000000
Total 000000000000

Ice days

JanFebMarAprMayJunJulAugSepOctNovDec Total
20180000000000000
20190000000000000
20200000000000000
20210000000000000
20220000000000000
Total 000000000000

Summer days

JanFebMarAprMayJunJulAugSepOctNovDec Total
201800000000926252989
2019282530161624222225306226
202022262415811318122325178
20212102623510822182418157
202228282782000000093
Total 808910762314533718110278

Tropical days

JanFebMarAprMayJunJulAugSepOctNovDec Total
201800000000410152251
201918122110000720192100
202010179000003891167
2021149700008616556
2022615200000000023
Total 3548418000022445940

Tropical nights

JanFebMarAprMayJunJulAugSepOctNovDec Total
20180000000021238
201960200000154119
202022000000011612
20210010000001002
20220100000000001
Total 8330000038710

Wet days

JanFebMarAprMayJunJulAugSepOctNovDec Total
20180000000015101531
201915105121000149663
2020810118032033111069
202115932100310192174
2022191113112500000061
Total 4336383459208224952

First and last frost

First frost Last frost
2018--
2019--
2020--
2021--
2022--


Units

Language



This wiki might help to use the full potential of Groenkloof weather website. The info section explains the hard and software and connections used.(In the menu bar under the sub menus Weather station and Groenkloof Weather) Weather data updates every minute.(for both the mobile and desktop sites) There is a mobile page with current conditions, forecast, forecast map, station history (with drop down menu for today, yesterday, month, year etc. showing all parameters) and lastly a graph with drop down menu for time period and parameter. (Very useful for quick references ) One can switch to the desktop page using the link in bottom right hand corner and vice versa. The desktop version is where very detailed weather info is available. ( Useful for more in depth detail ) It is divided in “blocks” The sunrise/sunset times and day length is shown. Moon with dates of full moon, new moon etc. The current block shows weather values in easy to read numerical format and updates every minute. “Live gauges” updates every minute and when the curser is hovered over a parameter it will show the min and max values and the time when this occurred. In the forecast maps one can use the menu bar top left of block to choose from windy or dark sky maps. Within the map one can choose from different parameters like wind, temperature, rain, thunder, clouds, pressure etc. Then station data is shown with now, max, min values and drop down menu for different time periods. There is also a history block where one can choose different parameters and a trends block with 1,3,6,12,24 hrs etc trends. Next is a forecast meteogram which is dynamic and moving the cursor over it will show all weather parameters at that point. Then easy to read forecast with dropdown the default using the Norwegian institute of meteorology values.(seems to be most accurate) Next is rainfall for today, this month, this year (from January) Drop down gives more options like seasonal(from September) etc. Rain balance is the stations values measured against 100 year rain data for Pretoria obtained from SA weather services. Next is graph with several drop down options and a day pie graph where one can pick dates and parameters. In extremes one can pick a parameter like absolute temperature, precipitation etc. to see max/min value dates and times. There is a air quality block click within block for more info. Map to show location of station. Webcam with view from Solidatus building updates every 5 minutes. For aviation enthusiasts Cloud height time to sunset and density altitude. Then SA weather warnings from SA weather services, lightning detection and fire danger index. Followed by calendar, earthquakes and astronomical events. World weather...shows current conditions in few world cities. Database: data is stored every 5 mins and available data runs from January 2014. The menu at the top is really self explanatory and here there are countless information, statistics etc. Enjoy!! Johan:johan.devilliers@me.com

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