Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The commencement of September indicates a shift in the average high-temperature, receding from August's 83.1°F (28.4°C) to a still moderately hot 73.9°F (23.3°C). Nighttime temperatures in September average to a cool 53.6°F (12°C).Humidity
In September, the average relative humidity in Hammond is 48%.Rainfall
In Hammond, in September, it is raining for 7.9 days, with typically 0.75" (19mm) of accumulated precipitation. In Hammond, during the entire year, the rain falls for 100 days and collects up to 12.83" (326mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Hammond, Montana, there are 52.1 snowfall days, and 23.54" (598mm) of snow is accumulated.Daylight
In September, the average length of the day in Hammond is 12h and 31min.On the first day of September in Hammond, sunrise is at 6:22 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:41 pm MDT.
Sunshine
The average sunshine in September in Hammond, Montana, is 10.5h.UV index
In Hammond, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 4 in September transforms into the following instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. When the Sun is at its strongest around midday, find shade and limit exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Hammond?
What is the average humidity in September in Hammond?
How much does it rain in Hammond in September?
When does it start to snow in Hammond?
What is the average length of the day in September in Hammond?
When is the sunrise / sunset in September in Hammond?
How many hours of sunshine does Hammond have in September?
What is the UV index reading in September in Hammond?
Average temperature in September
Hammond, MT
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (30.4°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is February (17.1°F).
Average pressure in September
Hammond, MT
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Hammond, MT
- Average wind speed in September: 9.1mph
The windiest months (with the highest average wind speed) are January and October (10.4mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in September
Hammond, MT
- Average humidity in September: 48%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
Hammond, MT
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Hammond, MT
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in September
Hammond, MT
- Average snowfall in September: 0.08"
The month with the highest snowfall is April (4.88").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Hammond, MT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Hammond, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 10h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in September
Hammond, MT
- Average sunshine days in September: 19.4 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is April (12.6 days).
Average UV index in September
Hammond, MT
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Hammond, MT
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Hammond, MT
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Hammond, Montana, USA
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