Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
The changeover to October signals a significant decrease in the average high-temperature, dropping from a moderately hot 76.3°F (24.6°C) in September to a comfortable 61.7°F (16.5°C). Merrimac, during the month of October, experiences an average low-temperature of 45.7°F (7.6°C).Humidity
With an average relative humidity of 71%, October is the least humid month.Rainfall
In October, in Merrimac, the rain falls for 11.3 days. Throughout October, 2.4" (61mm) of precipitation is accumulated. In Merrimac, during the entire year, the rain falls for 140.1 days and collects up to 29.92" (760mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.4 snowfall days, it receives 0.51" (13mm) of snow. In Merrimac, during the entire year, snow falls for 30.7 days and aggregates up to 15" (381mm) of snow.Daylight
In October, the average length of the day is 11h and 5min.On the first day of October, sunrise is at 7:04 am and sunset at 6:48 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 6:03 pm CDT.
Sunshine
In Merrimac, Iowa, the average sunshine in October is 5.4h.UV index
In October, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The average daily UV index of 2 in October transforms into the following instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. It's recommended to limit sun exposure when its radiation is at its peak during midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
What is the least humid month?
What is the average humidity in October?
How much does it rain in October?
When does it start to snow?
How many hours of daylight does Merrimac have in October?
When are sunrise and sunset in October?
How long on average sun shines in October?
What is the UV index intensity in October?
Average temperature in October
Merrimac, IA
- Average high temperature in October: 61.7°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in October: 45.7°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure in October
Merrimac, IA
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in October
Merrimac, IA
- Average wind speed in October: 9.6mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity in October
Merrimac, IA
- Average humidity in October: 71%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in October
Merrimac, IA
- Average rainfall in October: 2.4"
The wettest month (with the highest rainfall) is May (4.29").
The driest months (with the least rainfall) are February and December (1.38").
Average rainfall days in October
Merrimac, IA
- Average rainfall days in October: 11.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in October
Merrimac, IA
- Average snowfall in October: 0.51"
The month with the highest snowfall is January (4.76").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Merrimac, IA
- Average snowfall days in October: 0.4 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 October /
Average sunshine in October
Merrimac, IA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in October: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in October
Merrimac, IA
- Average sunshine days in October: 18.4 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is May (10.6 days).
Average UV index in October
Merrimac, IA
- Average UV index in October: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in October
Merrimac, IA
- Average cloud cover in October: 38
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July, August and September (Cloud cover 31).
Average visibility in October
Merrimac, IA
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Merrimac, Iowa, USA
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