Grass Valley September Weather Averages California, United States of America

September Weather Averages for Grass Valley

High Temp	29°C	85°F
Low Temp	15°C	59°F
Avg Temp	22°C	71°F
Sunshine Hours	329 hours
Rainfall	17.16 mm	0.68 In
Rain days	2 days
Pressure	1013 mb	30 In

Grass Valley September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	30°C / 86°F	15°C / 59°F	22°C / 71°F	358 hours	0.00 mm / 0.00 In	0 days	1013 mb / 30 In
2009	30°C / 86°F	16°C / 61°F	22°C / 72°F	340 hours	2.60 mm / 0.10 In	0 days	1014 mb / 30 In
2010	29°C / 83°F	13°C / 55°F	20°C / 68°F	339 hours	5.70 mm / 0.22 In	1 days	1013 mb / 30 In
2011	30°C / 87°F	15°C / 59°F	22°C / 72°F	345 hours	1.60 mm / 0.06 In	1 days	1014 mb / 30 In
2012	30°C / 87°F	14°C / 58°F	21°C / 71°F	354 hours	0.00 mm / 0.00 In	0 days	1015 mb / 30 In
2013	26°C / 79°F	13°C / 55°F	19°C / 66°F	322 hours	63.12 mm / 2.49 In	3 days	1012 mb / 30 In
2014	28°C / 83°F	14°C / 57°F	20°C / 69°F	321 hours	28.10 mm / 1.11 In	5 days	1012 mb / 30 In
2015	29°C / 84°F	15°C / 60°F	21°C / 71°F	303 hours	12.70 mm / 0.50 In	2 days	1012 mb / 30 In
2016	28°C / 83°F	14°C / 57°F	20°C / 69°F	352 hours	0.30 mm / 0.01 In	0 days	1014 mb / 30 In
2017	29°C / 84°F	16°C / 61°F	22°C / 71°F	314 hours	8.90 mm / 0.35 In	2 days	1013 mb / 30 In
2018	29°C / 85°F	15°C / 59°F	21°C / 70°F	353 hours	0.00 mm / 0.00 In	0 days	1013 mb / 30 In
2019	27°C / 81°F	14°C / 57°F	20°C / 68°F	303 hours	56.41 mm / 2.22 In	5 days	1014 mb / 30 In
2020	33°C / 91°F	18°C / 65°F	26°C / 78°F	356 hours	0.00 mm / 0.00 In	0 days	1014 mb / 30 In
2021	32°C / 89°F	16°C / 61°F	23°C / 74°F	348 hours	28.70 mm / 1.13 In	3 days	1013 mb / 30 In
2022	31°C / 89°F	17°C / 63°F	24°C / 75°F	296 hours	48.90 mm / 1.93 In	3 days	1011 mb / 30 In
2023	28°C / 83°F	14°C / 57°F	20°C / 69°F	297 hours	17.52 mm / 0.69 In	2 days	1013 mb / 30 In
2024	31°C / 88°F	18°C / 64°F	24°C / 75°F	323 hours	0.05 mm / 0.00 In	0 days	1011 mb / 30 In

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