Johnston August Weather Averages Iowa, United States of America

August Weather Averages for Johnston

High Temp	29°C	83°F
Low Temp	18°C	64°F
Avg Temp	23°C	73°F
Sunshine Hours	240 hours
Rainfall	114.44 mm	4.51 In
Rain days	7 days
Pressure	1014 mb	30 In

Johnston August Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	29°C / 84°F	16°C / 61°F	22°C / 72°F	323 hours	18.20 mm / 0.72 In	2 days	1015 mb / 30 In
2009	27°C / 80°F	16°C / 61°F	21°C / 70°F	274 hours	324.58 mm / 12.78 In	8 days	1015 mb / 30 In
2010	29°C / 84°F	19°C / 66°F	24°C / 75°F	267 hours	169.90 mm / 6.69 In	7 days	1013 mb / 30 In
2011	27°C / 81°F	18°C / 64°F	22°C / 72°F	240 hours	108.81 mm / 4.28 In	7 days	1013 mb / 30 In
2012	28°C / 82°F	17°C / 62°F	22°C / 72°F	240 hours	69.34 mm / 2.73 In	6 days	1014 mb / 30 In
2013	29°C / 85°F	18°C / 64°F	23°C / 74°F	281 hours	29.92 mm / 1.18 In	5 days	1016 mb / 30 In
2014	27°C / 81°F	18°C / 64°F	22°C / 72°F	192 hours	142.41 mm / 5.61 In	12 days	1014 mb / 30 In
2015	27°C / 81°F	16°C / 61°F	22°C / 71°F	263 hours	136.69 mm / 5.38 In	5 days	1015 mb / 30 In
2016	29°C / 83°F	18°C / 65°F	23°C / 73°F	225 hours	165.54 mm / 6.52 In	11 days	1016 mb / 30 In
2017	27°C / 81°F	16°C / 61°F	21°C / 70°F	265 hours	74.88 mm / 2.95 In	7 days	1016 mb / 30 In
2018	28°C / 83°F	18°C / 64°F	23°C / 73°F	234 hours	203.44 mm / 8.01 In	9 days	1014 mb / 30 In
2019	26°C / 79°F	17°C / 63°F	22°C / 71°F	205 hours	92.47 mm / 3.64 In	7 days	1015 mb / 30 In
2020	28°C / 83°F	18°C / 64°F	23°C / 74°F	216 hours	18.10 mm / 0.71 In	3 days	1014 mb / 30 In
2021	31°C / 87°F	19°C / 67°F	25°C / 77°F	232 hours	101.28 mm / 3.99 In	8 days	1013 mb / 30 In
2022	32°C / 90°F	19°C / 66°F	25°C / 77°F	213 hours	68.53 mm / 2.70 In	7 days	1013 mb / 30 In
2023	32°C / 90°F	18°C / 65°F	25°C / 77°F	247 hours	84.05 mm / 3.31 In	3 days	1012 mb / 30 In
2024	29°C / 84°F	17°C / 62°F	22°C / 72°F	246 hours	41.17 mm / 1.62 In	0 days	1016 mb / 30 In

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