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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 Monticello, Iowa, is a freezing cold winter month, with an average temperature varying between 25.2°F (-3.8°C) and 13.3°F (-10.4°C). January is the coldest month of the year, registering average temperatures as high as 25.2°F (-3.8°C) and as low as 13.3°F (-10.4°C). Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Monticello, Iowa, with an average temperature ranging between min 16°F (-8.9°C) and max 28.9°F (-1.7°C). Monticello, Iowa, transitions into February recording an average high-temperature of a still freezing cold 28.9°F (-1.7°C), closely aligning with the preceding month's temperature. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Monticello, Iowa, with an average temperature fluctuating between 29.5°F (-1.4°C) and 44.2°F (6.8°C). In Monticello, the average high-temperature in March soars, from a freezing cold 28.9°F (-1.7°C) in February, to a frosty 44.2°F (6.8°C). Weather in March »
Weather in April
April is a refreshing spring month in Monticello, Iowa, with temperature in the range of an average low of 39.9°F (4.4°C) and an average high of 56.1°F (13.4°C). The start of April brings a rise in the average high-temperature, moving from a frosty 44.2°F (6.8°C) in March to a moderate 56.1°F (13.4°C). Weather in April »
Weather in May
May, the last month of the spring in Monticello, is a pleasant month, with temperature in the range of an average low of 51.1°F (10.6°C) and an average high of 68.4°F (20.2°C). Monticello, Iowa, in May sees a temperature change, with average high-temperatures moving from a refreshing 56.1°F (13.4°C) in April to an agreeable 68.4°F (20.2°C). Weather in May »
Weather in June
June, the first month of the summer in Monticello, is a moderately hot month, with an average temperature varying between 77°F (25°C) and 60.4°F (15.8°C). The shift into June brings a slight increase in the average high-temperature, moving from an agreeable 68.4°F (20.2°C) in May to a warm 77°F (25°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Monticello, Iowa, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 80.1°F (26.7°C). July, characterized by an average high temperature of 80.1°F (26.7°C) and a low temperature of 63.3°F (17.4°C), is generally the warmest month. Weather in July »
Weather in August
August, the last month of the summer in Monticello, is another warm month, with an average temperature fluctuating between 60.6°F (15.9°C) and 78.6°F (25.9°C). The advent of August brings an average high-temperature of a still moderately hot 78.6°F (25.9°C), exhibiting minor difference from the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Monticello, is still a pleasant month, with an average temperature fluctuating between 73°F (22.8°C) and 54.3°F (12.4°C). Monticello records a mild change in average high-temperature during September, easing from a moderately hot 78.6°F (25.9°C) in August to an agreeable 73°F (22.8°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Monticello, Iowa, with temperature in the range of an average low of 43.2°F (6.2°C) and an average high of 58.6°F (14.8°C). As October sets, the average high-temperature displays a significant decrease, moving down from an agreeable 73°F (22.8°C) in September to a refreshing 58.6°F (14.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Monticello, Iowa, with an average temperature fluctuating between 44.6°F (7°C) and 31.3°F (-0.4°C). The onset of November introduces a moderate change in Monticello's weather, with average high-temperatures falling from October's mild 58.6°F (14.8°C) to a chilly 44.6°F (7°C). Weather in November »
Weather in December
December, the first month of the winter in Monticello, is still a freezing cold month, with an average temperature fluctuating between 21.4°F (-5.9°C) and 31.8°F (-0.1°C). Monticello's progression into December involves a drop in the average high-temperature, receding from a chilly 44.6°F (7°C) in November to a freezing cold 31.8°F (-0.1°C). Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in Monticello?
January, with an average high of 25.2°F (-3.8°C) and a low of 13.3°F (-10.4°C), signifies the coldest month of the year.
What are the most humid months in Monticello?
The months with the highest humidity are January and February, with an average relative humidity of 86%.
What is the driest month in Monticello?
January and February are months with the least rain in Monticello when the rain falls for 5.2 days and typically aggregates up to 1.26" (32mm) of rain.
How much does it rain in Monticello?
Throughout the year, in Monticello, there are 142.5 rainfall days, and 28.27" (718mm) of precipitation is accumulated.
When does it snow in Monticello?
Months with snowfall are January through April, October through December.
What is the snowiest month in Monticello?
January is the month with the most snowfall. Snow falls for 12.1 days and accumulates 5.04" (128mm) of snow.
How much does it snow in Monticello?
In Monticello, during the entire year, snow falls for 43.2 days and aggregates up to 17.17" (436mm) of snow.
What is the month with the least sunshine in Monticello?
January has the least sunshine of the year, with an average of 3.8h of sunshine.
When is the lowest UV index in Monticello?
The months with the lowest UV index in Monticello, Iowa, are January and December, with an average maximum UV index of 1.
When is Daylight Saving Time (DST) in Monticello?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 rainiest month in Monticello?
May is the month with the most rainfall in Monticello. Rain falls for 18.6 days and accumulates 4.25" (108mm) of precipitation.
When it does not snow in Monticello?
May through September are months without snowfall.
When are the longest days in Monticello?
With an average of 15h and 12min of daylight, June has the longest days of the year.
What is the month with the highest UV index in Monticello?
The months with the highest UV index in Monticello, Iowa, are June and July, with an average maximum UV index of 6.
What is the hottest time of year in Monticello?
July, characterized by an average high temperature of 80.1°F (26.7°C) and a low temperature of 63.3°F (17.4°C), is generally the warmest month.
What is the month with the most sunshine in Monticello?
The months with the most sunshine in Monticello, Iowa, are July and August, with an average of 9.9h of sunshine.
What is the least humid month in Monticello?
The least humid month in Monticello, Iowa, is October, with an average relative humidity of 74%.
What is the month with the shortest days in Monticello?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
Average temperature
Monticello, IA
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.2°F).
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure
Monticello, IA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"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"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Monticello, IA
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.1mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
7mph - Average wind speed in August:
6.9mph - Average wind speed in September:
8mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity
Monticello, IA
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Monticello, IA
- Average rainfall in January:
1.26" - Average rainfall in February:
1.26" - Average rainfall in March:
1.85" - Average rainfall in April:
3.15" - Average rainfall in May:
4.25" - Average rainfall in June:
3.78"
- Average rainfall in July:
2.83" - Average rainfall in August:
1.77" - Average rainfall in September:
2.52" - Average rainfall in October:
2.52" - Average rainfall in November:
1.65" - Average rainfall in December:
1.42"
The wettest month (with the highest rainfall) is May (4.25").
The driest months (with the least rainfall) are January and February (1.26").
Average rainfall days
Monticello, IA
- Average rainfall days in January:
5.2 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
16 days - Average rainfall days in May:
18.6 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
12.5 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
11.9 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
7.7 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall
Monticello, IA
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Monticello, IA
- Average snowfall days in January:
12.1 days - Average snowfall days in February:
9.5 days - Average snowfall days in March:
6 days - Average snowfall days in April:
1.6 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:
0.6 days - Average snowfall days in November:
4 days - Average snowfall days in December:
9.4 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Monticello, IA
- Average daylight in January:
9h and 3min - 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 4min - 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 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Monticello, IA
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
11.1 days - Average sunshine days in May:
10.6 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
16.7 days - Average sunshine days in September:
17 days - Average sunshine days in October:
16.9 days - Average sunshine days in November:
16.8 days - Average sunshine days in December:
16.7 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).
Average UV index
Monticello, IA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Monticello, IA
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Monticello, IA
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Monticello, Iowa, USA
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