Nampa September Weather Averages Idaho, United States of America

September Weather Averages for Nampa

High Temp	27°C	81°F
Low Temp	14°C	57°F
Avg Temp	20°C	68°F
Sunshine Hours	303 hours
Rainfall	11.40 mm	0.45 In
Rain days	2 days
Pressure	1014 mb	30 In

Nampa September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	26°C / 79°F	11°C / 51°F	18°C / 65°F	316 hours	9.40 mm / 0.37 In	1 days	1016 mb / 30 In
2009	29°C / 84°F	14°C / 57°F	21°C / 70°F	333 hours	0.10 mm / 0.00 In	0 days	1015 mb / 30 In
2010	27°C / 81°F	12°C / 54°F	19°C / 67°F	315 hours	0.90 mm / 0.04 In	0 days	1014 mb / 30 In
2011	28°C / 83°F	15°C / 58°F	21°C / 71°F	355 hours	0.30 mm / 0.01 In	0 days	1016 mb / 30 In
2012	27°C / 81°F	14°C / 57°F	21°C / 69°F	340 hours	0.30 mm / 0.01 In	0 days	1016 mb / 30 In
2013	25°C / 77°F	14°C / 58°F	19°C / 67°F	272 hours	34.90 mm / 1.37 In	6 days	1012 mb / 30 In
2014	26°C / 79°F	14°C / 58°F	20°C / 68°F	306 hours	34.10 mm / 1.34 In	3 days	1013 mb / 30 In
2015	27°C / 81°F	14°C / 58°F	20°C / 69°F	278 hours	16.60 mm / 0.65 In	1 days	1013 mb / 30 In
2016	25°C / 77°F	13°C / 55°F	18°C / 65°F	282 hours	5.60 mm / 0.22 In	2 days	1015 mb / 30 In
2017	26°C / 79°F	14°C / 58°F	20°C / 68°F	288 hours	10.90 mm / 0.43 In	2 days	1014 mb / 30 In
2018	26°C / 79°F	14°C / 57°F	20°C / 68°F	310 hours	0.80 mm / 0.03 In	0 days	1013 mb / 30 In
2019	25°C / 77°F	13°C / 55°F	19°C / 66°F	291 hours	25.12 mm / 0.99 In	4 days	1013 mb / 30 In
2020	30°C / 86°F	15°C / 58°F	22°C / 71°F	327 hours	1.20 mm / 0.05 In	0 days	1016 mb / 30 In
2021	29°C / 84°F	13°C / 56°F	21°C / 69°F	318 hours	15.43 mm / 0.61 In	3 days	1013 mb / 30 In
2022	30°C / 87°F	15°C / 58°F	22°C / 72°F	285 hours	3.50 mm / 0.14 In	2 days	1012 mb / 30 In
2023	27°C / 81°F	11°C / 52°F	19°C / 66°F	268 hours	10.70 mm / 0.42 In	2 days	1012 mb / 30 In
2024	29°C / 84°F	14°C / 57°F	21°C / 69°F	285 hours	21.87 mm / 0.86 In	0 days	1011 mb / 30 In

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