Johnston September Weather Averages Iowa, United States of America

September Weather Averages for Johnston

High Temp	26°C	78°F
Low Temp	14°C	57°F
Avg Temp	19°C	67°F
Sunshine Hours	253 hours
Rainfall	92.21 mm	3.63 In
Rain days	6 days
Pressure	1016 mb	30 In

Johnston September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	23°C / 73°F	13°C / 55°F	18°C / 64°F	247 hours	111.76 mm / 4.40 In	6 days	1018 mb / 31 In
2009	23°C / 74°F	12°C / 54°F	17°C / 63°F	263 hours	68.82 mm / 2.71 In	4 days	1018 mb / 31 In
2010	23°C / 73°F	13°C / 55°F	18°C / 64°F	222 hours	117.38 mm / 4.62 In	6 days	1015 mb / 30 In
2011	21°C / 70°F	11°C / 51°F	16°C / 60°F	250 hours	40.00 mm / 1.57 In	4 days	1017 mb / 31 In
2012	24°C / 75°F	11°C / 52°F	17°C / 63°F	279 hours	46.88 mm / 1.85 In	5 days	1016 mb / 30 In
2013	27°C / 80°F	14°C / 58°F	20°C / 69°F	279 hours	57.44 mm / 2.26 In	6 days	1014 mb / 30 In
2014	22°C / 72°F	12°C / 54°F	17°C / 63°F	209 hours	122.91 mm / 4.84 In	10 days	1017 mb / 31 In
2015	26°C / 79°F	16°C / 60°F	21°C / 69°F	239 hours	95.23 mm / 3.75 In	7 days	1016 mb / 30 In
2016	26°C / 78°F	15°C / 60°F	20°C / 68°F	248 hours	147.44 mm / 5.80 In	8 days	1017 mb / 31 In
2017	28°C / 82°F	15°C / 59°F	21°C / 70°F	295 hours	43.10 mm / 1.70 In	3 days	1016 mb / 30 In
2018	23°C / 74°F	15°C / 58°F	19°C / 66°F	200 hours	228.51 mm / 9.00 In	12 days	1018 mb / 31 In
2019	26°C / 80°F	17°C / 62°F	21°C / 70°F	237 hours	197.34 mm / 7.77 In	10 days	1014 mb / 30 In
2020	24°C / 75°F	13°C / 55°F	18°C / 64°F	240 hours	96.99 mm / 3.82 In	7 days	1017 mb / 31 In
2021	29°C / 85°F	15°C / 60°F	22°C / 72°F	291 hours	44.50 mm / 1.75 In	2 days	1013 mb / 30 In
2022	28°C / 82°F	14°C / 58°F	21°C / 69°F	263 hours	45.99 mm / 1.81 In	4 days	1016 mb / 30 In
2023	31°C / 88°F	14°C / 57°F	22°C / 72°F	242 hours	78.33 mm / 3.08 In	3 days	1015 mb / 30 In
2024	29°C / 84°F	14°C / 57°F	21°C / 70°F	292 hours	44.47 mm / 1.75 In	3 days	1016 mb / 30 In

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