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
In Monrovia, entering September brings a subtle temperature decrement, reducing from August's warm 81.7°F (27.6°C) to a still moderately hot 75.9°F (24.4°C). September's average low-temperature reading settles at a moderate 57.9°F (14.4°C).Humidity
In September, the average relative humidity in Monrovia is 78%.Rainfall
The month with the least rainfall in Monrovia is September, when the rain falls for 13.5 days and typically collects 2.2" (56mm) of precipitation.Snowfall
May through September are months without snowfall in Monrovia.Daylight
In September, the average length of the day in Monrovia is 12h and 26min.On the first day of September in Monrovia, sunrise is at 7:14 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:29 pm EDT.
Sunshine
In Monrovia, Indiana, the average sunshine in September is 8.4h.UV index
In Monrovia, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Undertake precautions - Guarding against sun damage is counselled. To guard against the harmful effects of the Sun, minimize exposure during midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Monrovia in September?
What is the average humidity in September in Monrovia?
What is the driest month in Monrovia?
How much does it rain in Monrovia in September?
When it does not snow in Monrovia?
Does it snow in Monrovia in September?
What is the average length of the day in September in Monrovia?
What time are sunrise and sunset in September in Monrovia?
How many hours of sunshine does Monrovia have in September?
What is the UV index intensity in September in Monrovia?
Average temperature in September
Monrovia, IN
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in September: 57.9°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in September
Monrovia, IN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Monrovia, IN
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Monrovia, IN
- Average humidity in September: 78%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Monrovia, IN
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in September
Monrovia, IN
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (20.7 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in September
Monrovia, IN
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Monrovia, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Monrovia, IN
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Monrovia, IN
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is October (16.6 days).
The month with the least sunshine days is May (8.4 days).
Average UV index in September
Monrovia, IN
- 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, October, November and December (UV index 2).
Average cloud cover in September
Monrovia, IN
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Monrovia, IN
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, July and December (5mi).
Monrovia, Indiana, USA
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