Confidence Intervals Extrema Summary Warming Trends Day counts To Celsius

Summary statistics of average monthly temperatures in Helena, Montana, collected the last decade. To convert the results in degrees of Celsius, click here.

Monthly Summary Statistics in °F

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Minimum	11.75	18.10	24.62	37.88	47.56	55.17	65.02	63.20	52.69	39.85	22.14	11.29
Lower Bound	20.16	25.97	32.86	42.26	51.55	59.65	69.49	66.84	56.75	43.79	30.57	20.96
Average	23.09	27.92	35.22	43.62	52.96	60.91	71.35	68.32	58.30	45.22	33.06	23.54
Upper Bound	26.03	29.87	37.59	44.99	54.37	62.18	73.20	69.80	59.85	46.65	35.55	26.12
Maximum	35.88	32.57	43.01	48.02	59.30	65.49	79.23	74.65	64.13	51.04	40.52	30.32
Sample Size	19	19	19	19	19	19	19	18	18	18	18	18

Data Description

• Observation period: 1995/1 - 2013/7.
• Total month count: 223.
• Minimum monthly temperature: 11.29 °F.
• Maximum monthly temperature: 79.23 °F.

Plot of the average monthly temperatures in Helena, Montana.