September 2015 Summary

[Jakobsli]

September 2015 in Norway
The normal used here is the old 1961-90

September was 2.2C above normal for Norway as a whole.
The warmest station was Færder lghth. (outer Oslofjord) with 24-hr mean 14.4C (+1.5C)
The coldest station was Juvasshøe (1,894 m - mountain) with mean 1.3C (+1.8C)
Absolute high was 25C at Steinkjer (Mære).
Absolute low was -5.2C at Hovden (841 m).

Precipitation was 105 % of normal, but was very uneven across the country (see map).
The wettest station was Lifjell (SE/Telemark) with 577.7 mm!!
The driest station was Skjåk (valley surrounded by mts) with 16.6 mm (49 %)

Source: http://met.no/Klima/Varet_i_Norge/20...2015-09-v2.pdf

Temperature - deviation from normal. Relative warmest in Mid- and Northern Norway.
Image credit: Været i Norge - met.no




Precipitation - deviation from normal. Image credit: Same as above.
Very wet in the S/SE.



Three cities in addition to Trondheim, described earlier in the thread:

Oslo (94 m)
Mean: 12.5C (+1.7C)
Avg high: 16.7C
Avg low: 9.1C
Abs high: 21.1C
Abs low: 3C
Precip: 158.4 mm (176 %)
Precip days >= 1 mm: 13
Avg cloud cover: 5.7/8 = 29 % possible sunshine

Bergen (12 m)
Mean: 13.5C (+2.3C)
Avg high: 17.8C
Avg low: 10.5C
Abs high: 22C
Abs low: 6.3C
Precip: 121.9 mm (43 %) less precip than Oslo!
Precip days >= 1 mm: 14
Avg cloud cover: 5.7/8 = 29 % possible sunshine

Tromsø (20 m):
Mean: 9.5C (+2.5C)
Avg high: 13C
Avg low: 7.2C
Abs high: 17.9C
Abs low: 4.5C
Precip: 47.1 mm (47 %) much less precip than further south
Precip days >= 1 mm: 14
Sunhours: 99, mean cloud cover 6/8 = 25 % possible sunshine - very cloudy month there.

Up at Svalbard, temperature were as always above normal. Svalbard Airport mean 2.8C (+2.5C).
Jan Mayen 5.9C (+3.1C, second warmest on record).

[srfoskey]

September was dry in the beginning and rainy at the end. It was warmer than normal in the beginning and cooler than normal in the middle. There was some extreme humidity on September 29; the dew point reached 79 at RDU. The low of 74 that night set a record high minimum for the date. Other than those few things, the month was fairly ordinary.





Other than a cold February and a hot June, nothing super exciting has happened this year.

[flamingGalah!]

September in Malta was above average & the month started with a heatwave in which I recorded three consecutive nights with minimums above 28.0C. Despite warnings that autumn would start with lots of rain & storms we actually had below average rainfall & just one thunderstorm which accounted for almost the entire months rainfall. It was slightly sunnier than average & temperatures remained hot until the last week of the month...

Statistics from my PWS in St Paul's Bay Malta, against averages from Balzan:

Average High: 30.0C (+1.6C)
Average Low: 24.8C (+3.2C)
Overall Mean: 27.4C (+2.4C)

Highest Max: 36.6C (5th)
Lowest Min: 20.9C (30th)
Lowest Max: 26.0C (25th & 30th)
Highest Min: 28.3C (7th)

Rainfall: 15.0mm (22%)
Days of Rainfall: 4
Max Rain in day: 14.2mm (9th)
Days of Thunder: 1

Sunshine*: 277.0 Hrs (109%)

*Sunshine figures from Luqa

Below my stats in Wiki weather box, alongside those from the Met Office site at Luqa Airport:

[Alkis]

2015 till September in Ioannina from the weather station of our national weather service. It is another proof that this station is less affected by thunderstorms because it has lesser mm than the others of the area. I see it many times.