Gungahlin receives a mixed bag of September weather.

Weather conditions across Gungahlin during September were typical for early spring, with a mix of warm and cold outbreaks, strong winds, sunshine and frost.

Nights were cool to cold, with an average minimum of 3.3°C; down on the average of 4.3°C recorded last September, and below Gungahlin’s longer term September average of 4.4°C.  The warmest night for the month occurred on September 18, when the temperature was a mild 9.5°C, while on September 3, it dropped to a frosty minus 1.2°C.

Days were generally cool to mild and sunny, with an average maximum of 16.5°C; well up on last September’s average of 14.4°C.  Gungahlin’s longer term September average is 16.4°C.  The highest temperature for the month was a warm 25.6°C, recorded on September 19, while on September 13, partly cloudy skies and cold, gusty W winds combined to keep Gungahlin's maximum temperature to just 11.3°C.

Gungahlin received 11 frosts during September and there was 1 fog.  This compares to the 8 frosts and 3 fogs recorded in Gungahlin during September 2010.

Winds at the Weather Centre averaged at 4.1 km/h during September, down on the average of 5.4 km/h last September.  The strongest gust for the month was 49.9 km/h from the W/NW, recorded on September 14.

Despite a damp end to September, with almost 20mm falling in the last 3 days of the month, rainfall totals were well below average.  In all, Gungahlin recorded 34.2mm of rain for the month, over 13 days.  This compares to Gungahlin’s longer term September average of 51.8mm.  Falls in other parts of Canberra were also below normal, with Canberra AP recording 32.6mm for the month, Monash 35.0mm, Tuggeranong 40.4mm and Melba 44.3mm.  Gungahlin’s total rainfall so far in 2011 now stands at 313.2mm, well below the 398.6mm that fell over the same period last year.

Gungahlin's October outlook:  Fairly typical spring weather conditions should continue in Gungahlin during October.  Overall, daytime temperatures should average at around 20°C, and nights at 6°C.  This compares to Gungahlin’s longer term October average of 6.7°C to 19.7°C.  Despite the dry September, rainfall prospects for October look quite positive, with above average falls likely.  With this in mind, Gungahlin should receive around 60mm of rain during the month, a little above the longer term average of 53.7mm.

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