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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in Merrimac, Iowa, is another subzero cold winter month, with an average temperature fluctuating between 17.4°F (-8.1°C) and 29.7°F (-1.3°C). In Merrimac, the month of January registers the lowest temperatures, averaging 29.7°F (-1.3°C) at the peak and 17.4°F (-8.1°C) at the lowest. Weather in January »
Weather in February
The last month of the winter, February, is a cold month in Merrimac, Iowa, with an average temperature fluctuating between 34.3°F (1.3°C) and 21°F (-6.1°C). In the transition from January to February, Merrimac reports an average high-temperature of a cold 34.3°F (1.3°C), indicating a close resemblance to the prior month. Weather in February »
Weather in March
March, the first month of the spring in Merrimac, is a frosty month, with an average temperature fluctuating between 33.3°F (0.7°C) and 48.2°F (9°C). The shift into March is marked by a rise in the average high-temperature, moving from February's wintry 34.3°F (1.3°C) to a chilly 48.2°F (9°C). Weather in March »
Weather in April
April is a comfortable spring month in Merrimac, Iowa, with an average temperature varying between 43.3°F (6.3°C) and 60.8°F (16°C). April brings a temperature increase, with average high-temperatures moving from March's chilly 48.2°F (9°C) to an enjoyable 60.8°F (16°C). Weather in April »
Weather in May
May, the last month of the spring in Merrimac, is an agreeable month, with temperature in the range of an average high of 70.9°F (21.6°C) and an average low of 53.8°F (12.1°C). In Merrimac, stepping into May brings a temperature increase, moving up from April's enjoyable 60.8°F (16°C) to a pleasant 70.9°F (21.6°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Merrimac, Iowa, with temperature in the range of an average high of 79.9°F (26.6°C) and an average low of 63.7°F (17.6°C). As June begins, there is an increase in the average high-temperature, moving from an agreeable 70.9°F (21.6°C) in May to a warm 79.9°F (26.6°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Merrimac, Iowa, with an average temperature ranging between min 65.3°F (18.5°C) and max 82.4°F (28°C). The warmest month is July, with an average high-temperature of 82.4°F (28°C) and an average low-temperature of 65.3°F (18.5°C). In July, the heat index is calculated to be a tropical 91.4°F (33°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Merrimac, Iowa, with an average temperature fluctuating between 81.7°F (27.6°C) and 63.3°F (17.4°C). The start of August marks an average high-temperature of a still moderately hot 81.7°F (27.6°C), hardly distinguishable from the conditions in July. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Merrimac, Iowa, with an average temperature varying between 56.7°F (13.7°C) and 76.3°F (24.6°C). The arrival of September suggests a slight decrease in the average high-temperature, moving from 81.7°F (27.6°C) in August to a still moderately hot 76.3°F (24.6°C). Weather in September »
Weather in October
October, like September, in Merrimac, Iowa, is another comfortable autumn month, with an average temperature fluctuating between 45.7°F (7.6°C) and 61.7°F (16.5°C). In Merrimac, stepping into October signifies a significant temperature decrement, moving down from September's moderately hot 76.3°F (24.6°C) to a comfortable 61.7°F (16.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Merrimac, Iowa, with an average temperature varying between 48°F (8.9°C) and 34°F (1.1°C). A subtle decrease in the average high-temperature marks November, falling from October's enjoyable 61.7°F (16.5°C) to a chilly 48°F (8.9°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Merrimac, Iowa, with an average temperature varying between 24.6°F (-4.1°C) and 36°F (2.2°C). Onset of December witnesses a reduction in the average high-temperature, falling from a frosty 48°F (8.9°C) in November to a cold 36°F (2.2°C). Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in Merrimac?
With average high and low temperatures of 29.7°F (-1.3°C) and 17.4°F (-8.1°C) respectively, January is Merrimac's coldest month.
How much does it rain in Merrimac?
In Merrimac, during the entire year, the rain falls for 140.1 days and collects up to 29.92" (760mm) of precipitation.
When does it snow in Merrimac?
January through April, October through December are months with snowfall in Merrimac, Iowa.
When does it snow the most in Merrimac?
January is the month with the most snowfall in Merrimac. Snow falls for 9.6 days and accumulates 4.76" (121mm) of snow.
How many days does it snow in Merrimac?
Throughout the year, there are 30.7 snowfall days, and 15" (381mm) of snow is accumulated.
What is the month with the least sunshine in Merrimac?
The month with the least sunshine in Merrimac is January, with an average of 4h of sunshine.
What is the month with the lowest UV index in Merrimac?
With an average maximum UV index of 1, January is the month with the lowest UV index in Merrimac.
What is the driest month in Merrimac?
February and December are months with the least rain in Merrimac, Iowa, when the rain falls for 4.6 days and typically aggregates up to 1.38" (35mm) of rain.
When is Daylight Saving Time (DST) in Merrimac?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Merrimac, Iowa, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the wettest month in Merrimac?
The month with the most rainfall in Merrimac is May, when the rain falls for 18.3 days and typically aggregates up to 4.29" (109mm) of precipitation.
When it does not snow in Merrimac?
In Merrimac, snow does not fall in May through September.
When are the longest days in Merrimac?
With an average of 15h and 6min of daylight, June has the longest days of the year in Merrimac, Iowa.
What are the months with the highest UV index in Merrimac?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Merrimac, Iowa.
What part of the year is the hottest in Merrimac?
Merrimac's July weather, with an average high temperature of 82.4°F (28°C) and an average low temperature of 65.3°F (18.5°C), tends to be the warmest of the year.
What is the most humid month in Merrimac?
July is the most humid month in Merrimac, with an average relative humidity of 83%.
What month has the most sunshine in Merrimac?
The month with the most sunshine in Merrimac, Iowa, is July, with an average of 10h of sunshine.
What is the least humid month in Merrimac?
The least humid month in Merrimac is October, with an average relative humidity of 71%.
What is the month with the shortest days in Merrimac?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Merrimac, IA
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).
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
Merrimac, IA
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.11"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
Merrimac, IA
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.6mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.9mph
- Average wind speed in July:
6.9mph - Average wind speed in August:
6.9mph - Average wind speed in September:
7.9mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.1mph
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
Merrimac, IA
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Merrimac, IA
- Average rainfall in January:
1.42" - Average rainfall in February:
1.38" - Average rainfall in March:
2.2" - Average rainfall in April:
3.27" - Average rainfall in May:
4.29" - Average rainfall in June:
4.17"
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
Merrimac, IA
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
4.6 days - Average rainfall days in March:
13 days - Average rainfall days in April:
14.6 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
17.1 days
- Average rainfall days in July:
15.5 days - Average rainfall days in August:
13.1 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
7.3 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
Merrimac, IA
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
Merrimac, IA
- Average snowfall days in January:
9.6 days - Average snowfall days in February:
7.9 days - Average snowfall days in March:
4.3 days - Average snowfall days in April:
0.9 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.4 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
6 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 / Average sunshine
Merrimac, IA
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
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 January:
4h - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 3min
The month with the most sunshine is July (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 4h).
Average sunshine days
Merrimac, IA
- Average sunshine days in January:
16.2 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
10.6 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
13 days - Average sunshine days in August:
14.8 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
18.4 days - Average sunshine days in November:
18.3 days - Average sunshine days in December:
18 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
Merrimac, IA
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
Merrimac, IA
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
Merrimac, IA
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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