Chch weekly weather summary for WEEK ending 15th of Septem

[Bishopdale Weather]

Bishopdale Chch weekly weather summary for
WEEK ending 15th of September 2023.
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A.v.g night air temp this September so far is 5.71c.
which is 2.21c warmer than avg.
2nd warmest ON RECORD September night temps.
Avg IS 3.5c 1991-2020 avg.

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A.V.G DAY TEMPS this September so far are 15.98c.
which is 0.58c warmer than avg.
11th warmest ON RECORD for September DAY TEMPS.
Avg IS 15.4c. 1991-2020 avg.
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Avg MONTH temps this September =10.85c.
Which is 1.4c warmer than avg.
warmest= on record September avg temps.
Avg IS 9.44c. 1991-2020 avg.
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A.V.G 2023 air temp so far is 11.74c.
Which is 0.06c colder than avg for a year.
9th Coldest on record for week 37.***
avg is 11.8c.
DOWN 0.04c on last week.
RECORD WARM YEAR WAS 1998 = 12.36c.(all years)
This time last year the avg was 11.6c

***This is for the years since 2013.
Before 2013. I did not have a weekly breakdown of avg years temps.
The avg over the last 30 years can
only be done at the end of the year.
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Ground avg temps for THIS September is 12c
UP 0.9c from last week.
3rd Warmest on record for week 37,
And 0.4c warmer Than same week last September.
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RAINFALL we have had 4mm rain this September.
lowest on record.
avg September rainfall is 40mm.
lowest=21.1mm in 2011
most 77.3mm in 2017.
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SUN IS Colder THAN avg.
2.22c Colder than avg.
warmer than last week by 0.03c.
And 2.27c colder than last September 2022.
And 1.43c colder THAN in 2021.
coldest ON RECORD FOR WEEK 37,

Solar Cycle 25 STARTED ON THE 20/4/20.
Solar MAX should be in 2026.
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Air Temp taken in SUNLIGHT (NOT SHADE TEMP).
Warmest DAY this September so far is 38.6c on day 8.
The record WARM September day in sunlight was 48.8c
in 2010.
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Coldest night grass temp this September so far
is -2.9c on day 1.
COLDEST September GRASS TEMP ON RECORD IS -8c IN 2020.
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WE HAD 1 AIR FROSTS this September
WHICH IS less than avg.
avg is 3 AIR frosts.
Lowest number air frost on record is 1 in 2014,2015,
2016,2017.
Most air frost on record is 10 in 2012
WE HAD 4 GRASS FROSTS THIS September.
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.....................WIND-RUN.....................
Chch has had so far 2649KM of wind-run this September
so far lowest on record so far.
Avg For all of September is 5119KM.
Most was in 2018=5980KM.
LOWEST was in 2011=3923KM.
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......SOLAR CYCLE25 A.V.G SUNSPOT NUMBER.....
The A.V.G for the cycle so far 114 spots.per day
UP 0.5 a.v.g spots from last week.
Most A.V.G sunspots in cycle25 is 115.1 per day on the 21/7/23.
LOWEST A.V.G was at the start of cycle25 with 0 on 20/4/20.
Most sunspots are expected in 2025.
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...............SOLAR CYCLE 25............
LAST WEEKS SUNSPOT NUMBER WAS 135 UP 31 FROM 2 WEEKS AGO.
most was in the week 14/07/2023 189 spots
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