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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, is a wintry winter month in Callao, Missouri, with an average temperature ranging between min 20.1°F (-6.6°C) and max 33.3°F (0.7°C). In Callao, January records the lowest average temperatures, peaking at 33.3°F (0.7°C) and reaching a low of 20.1°F (-6.6°C). Weather in January »
Weather in February
The last month of the winter, February, is also a wintry month in Callao, Missouri, with an average temperature fluctuating between 23.5°F (-4.7°C) and 37.9°F (3.3°C). February's arrival brings an average high-temperature of a still cold 37.9°F (3.3°C), demonstrating subtle variation from the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Callao, is a fresh month, with an average temperature ranging between max 51.1°F (10.6°C) and min 35.2°F (1.8°C). The start of March is characterized by an increase in the average high-temperature, transitioning from a wintry 37.9°F (3.3°C) in February to a cool 51.1°F (10.6°C). Weather in March »
Weather in April
April in Callao, Missouri, is an enjoyable spring month, with an average temperature ranging between max 62.4°F (16.9°C) and min 45.1°F (7.3°C). A shift in the average high-temperature is noticeable in April, changing from a cool 51.1°F (10.6°C) in March to a comfortable 62.4°F (16.9°C). Weather in April »
Weather in May
May, the last month of the spring in Callao, is an agreeable month, with an average temperature varying between 54.5°F (12.5°C) and 71.4°F (21.9°C). Callao in May shows a temperature shift, moving from an average high of a refreshing 62.4°F (16.9°C) in April to an agreeable 71.4°F (21.9°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Callao, Missouri, with an average temperature varying between 81.5°F (27.5°C) and 64.4°F (18°C). Callao experiences a temperature shift with the start of June, with average high-temperatures moving from a pleasant 71.4°F (21.9°C) in May to a warm 81.5°F (27.5°C). Weather in June »
Weather in July
July, like June, in Callao, Missouri, is a moderately hot summer month, with an average temperature ranging between max 84°F (28.9°C) and min 66.7°F (19.3°C). The average temperatures reach their apex in July, averaging 84°F (28.9°C) at the high end and 66.7°F (19.3°C) at the low end. Throughout July, the heat index is appraised at a tropical 93.2°F (34°C). Weather in July »
Weather in August
August, the last month of the summer in Callao, is also a moderately hot month, with an average temperature fluctuating between 64.4°F (18°C) and 82.9°F (28.3°C). Callao measures an average high-temperature of a still moderately hot 82.9°F (28.3°C) in August, nearly consistent with the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Callao, is also a moderately hot month, with an average temperature ranging between max 77.2°F (25.1°C) and min 57.7°F (14.3°C). As August transitions into September, Callao sees a gentle drop in the average high-temperature, transitioning from 82.9°F (28.3°C) to a still moderately hot 77.2°F (25.1°C). Weather in September »
Weather in October
October, like September, in Callao, Missouri, is another refreshing autumn month, with an average temperature ranging between min 46.2°F (7.9°C) and max 63.5°F (17.5°C). As September shifts into October, a slight alteration in temperatures is observed, with average highs reducing from a moderately hot 77.2°F (25.1°C) to a comfortable 63.5°F (17.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Callao, Missouri, with an average temperature fluctuating between 50.4°F (10.2°C) and 35.2°F (1.8°C). A shift in the average high-temperature occurs in November, reducing from an enjoyable 63.5°F (17.5°C) in October to a fresh 50.4°F (10.2°C). Weather in November »
Weather in December
December, the first month of the winter in Callao, is still a cold month, with an average temperature ranging between max 38.5°F (3.6°C) and min 26.1°F (-3.3°C). December brings a decrease in the average high-temperature, falling from November's fresh 50.4°F (10.2°C) to a cold 38.5°F (3.6°C). Weather in December »
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
January brings the lowest temperatures, with an average high of 33.3°F (0.7°C) and an average low of 20.1°F (-6.6°C).
What is the driest month?
January is the month with the least rainfall. Rain falls for 5.3 days and accumulates 1.1" (28mm) of precipitation.
How many days does it rain?
Throughout the year, there are 134.7 rainfall days, and 26.38" (670mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, October through December.
What is the snowiest month?
January is the month with the most snowfall. Snow falls for 6.7 days and accumulates 3.86" (98mm) of snow.
How many days does it snow?
Throughout the year, there are 21.8 snowfall days, and 11.14" (283mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 4.4h of sunshine, January has the least sunshine of the year.
What are the months with the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
When is Daylight Saving Time (DST)?
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 most humid month?
May and June, with an average relative humidity of 81%, are most humid months.
What is the rainiest month?
The month with the most rainfall is May, when the rain falls for 17.6 days and typically aggregates up to 3.23" (82mm) of precipitation.
When it does not snow?
In Callao, snow does not fall in May through September.
When are the longest days?
The month with the longest days is June, with an average of 14h and 54min of daylight.
What is the month with the highest UV index?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What part of the year is the hottest?
July temperatures tend to peak at an average high of 84°F (28.9°C) and dip to a low of 66.7°F (19.3°C).
What month has the most sunshine?
July has the most sunshine of the year in Callao, with an average of 10.4h of sunshine.
What is the least humid month?
October is the least humid month, with an average relative humidity of 72%.
What is the month with the shortest days?
December has the shortest days of the year in Callao, with an average of 9h and 24min of daylight.
Average temperature
Callao, MO
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.3°F).
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure
Callao, MO
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.92"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:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Callao, MO
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.2mph - Average wind speed in May:
8.4mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.4mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity
Callao, MO
The months with the highest relative humidity are May and June (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Callao, MO
- Average rainfall in January:
1.1" - Average rainfall in February:
1.34" - Average rainfall in March:
2.28" - Average rainfall in April:
2.72" - Average rainfall in May:
3.23" - Average rainfall in June:
3.19"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days
Callao, MO
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
5.7 days - Average rainfall days in March:
12.4 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
17.6 days - Average rainfall days in June:
16.1 days
- Average rainfall days in July:
13.9 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
10.3 days - Average rainfall days in November:
8.3 days - Average rainfall days in December:
6.2 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (5.3 days).
Average snowfall
Callao, MO
The month with the highest snowfall is January (3.86").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Callao, MO
- Average snowfall days in January:
6.7 days - Average snowfall days in February:
5.8 days - Average snowfall days in March:
2.9 days - Average snowfall days in April:
0.8 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:
1.2 days - Average snowfall days in December:
4 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Callao, MO
- 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 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h 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 January:
4h and 2min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Callao, MO
- Average sunshine days in January:
20.5 days - Average sunshine days in February:
17 days - Average sunshine days in March:
15.4 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
11.9 days
- Average sunshine days in July:
14.4 days - Average sunshine days in August:
15.6 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
19 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
21.3 days
The month with the most sunshine days is December (21.3 days).
The month with the least sunshine days is May (11.8 days).
Average UV index
Callao, MO
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, November and December (UV index 2).
Average cloud cover
Callao, MO
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility
Callao, MO
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Callao, Missouri, USA
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