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
A subtle shift in Lisbon's weather is observed as August turns into September, with the average high temperature reducing from a warm 76.5°F (24.7°C) to an agreeable 69.4°F (20.8°C). In September, the nighttime temperature lowers to an average of 51.8°F (11°C).Humidity
In September, the average relative humidity is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 9.1 days and typically collects 1.42" (36mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Lisbon, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:04 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:37 am and sunset at 6:22 pm EDT.
Sunshine
In September, the average sunshine in Lisbon is 8.2h.UV index
In September, the average daily maximum UV index in Lisbon is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Heed the precautions - It is counselled to guard against solar damage. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Lisbon in September?
What is the average humidity in September?
What is the driest month in Lisbon?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Lisbon have in September?
What is the UV index reading in September in Lisbon?
Average temperature in September
Lisbon, ME
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in September: 51.8°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in September
Lisbon, ME
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Lisbon, ME
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Lisbon, ME
- Average humidity in September: 79%
The months with the highest relative humidity are January, February and March (82%).
The months with the lowest relative humidity are April and November (76%).
Average rainfall in September
Lisbon, ME
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is October (3.03").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in September
Lisbon, ME
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is April (14.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in September
Lisbon, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lisbon, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lisbon, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Lisbon, ME
- Average sunshine days in September: 18.9 days
The month with the most sunshine days is September (18.9 days).
The month with the least sunshine days is April (12.5 days).
Average UV index in September
Lisbon, ME
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Lisbon, ME
- Average cloud cover in September: 37
The months with the most cloud cover are February, March and April (Cloud cover 53).
The months with the least cloud cover are August and September (Cloud cover 37).
Average visibility in September
Lisbon, ME
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Lisbon, Maine, USA
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