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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, like December, is another subzero cold winter month in Siam, Iowa, with temperature in the range of an average high of 31.1°F (-0.5°C) and an average low of 17.2°F (-8.2°C). The coldest month is January, with an average high-temperature of 31.1°F (-0.5°C) and an average low-temperature of 17.2°F (-8.2°C). Weather in January »
Weather in February
February, the last month of the winter in Siam, is a wintry month, with an average temperature ranging between min 20.7°F (-6.3°C) and max 35.2°F (1.8°C). Siam's weather, upon February's arrival, documents an average high-temperature of a wintry 35.2°F (1.8°C), nearly identical to the prior month. Weather in February »
Weather in March
March, the first month of the spring in Siam, is a cool month, with an average temperature ranging between max 50°F (10°C) and min 33.8°F (1°C). In Siam, the average high-temperature in March soars, from an icy 35.2°F (1.8°C) in February, to a fresh 50°F (10°C). Weather in March »
Weather in April
April in Siam, Iowa, is a refreshing spring month, with an average temperature varying between 43.3°F (6.3°C) and 61.5°F (16.4°C). Noticing a change, the average high-temperature during April moves from March's cool 50°F (10°C) to a comfortable 61.5°F (16.4°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Siam, Iowa, with an average temperature varying between 54.1°F (12.3°C) and 70.9°F (21.6°C). An increase in the average high-temperature marks May, moving from April's refreshing 61.5°F (16.4°C) to an agreeable 70.9°F (21.6°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Siam, Iowa, with an average temperature fluctuating between 81.3°F (27.4°C) and 64°F (17.8°C). An upsurge in temperatures occurs as May gives way to June, with average highs shifting from an agreeable 70.9°F (21.6°C) to a warm 81.3°F (27.4°C). Weather in June »
Weather in July
July, like June, in Siam, Iowa, is another warm summer month, with an average temperature fluctuating between 66.6°F (19.2°C) and 83.8°F (28.8°C). July, known for its average high temperature of 83.8°F (28.8°C) and an average low temperature of 66.6°F (19.2°C), is the warmest month. The heat index value during July is appraised at a hot 93.2°F (34°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Siam, Iowa, with an average temperature fluctuating between 63.7°F (17.6°C) and 82.2°F (27.9°C). August reports an average high-temperature of a still warm 82.2°F (27.9°C), slightly varied from July's 83.8°F (28.8°C). Weather in August »
Weather in September
September, the first month of the autumn in Siam, is still a warm month, with an average temperature varying between 57°F (13.9°C) and 76.6°F (24.8°C). Siam's transition into September involves a gentle shift in temperature, receding from 82.2°F (27.9°C) in August to a still warm 76.6°F (24.8°C). Weather in September »
Weather in October
October, like September, in Siam, Iowa, is another comfortable autumn month, with temperature in the range of an average low of 45.1°F (7.3°C) and an average high of 61.9°F (16.6°C). In October, the average high-temperature decreases considerably from a warm 76.6°F (24.8°C) in September to a refreshing 61.9°F (16.6°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Siam, Iowa, with temperature in the range of an average high of 49.1°F (9.5°C) and an average low of 33.4°F (0.8°C). November ushers in a slight temperature change, with average high-temperatures reducing from October's comfortable 61.9°F (16.6°C) to a frosty 49.1°F (9.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Siam, Iowa, with an average temperature varying between 22.8°F (-5.1°C) and 35.2°F (1.8°C). The arrival of December indicates a decrease in the average high-temperature, moving from a chilly 49.1°F (9.5°C) in November to a cold 35.2°F (1.8°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Siam?
Siam's coldest month, January, registers temperatures that range from a high of 31.1°F (-0.5°C) to a low of 17.2°F (-8.2°C).
What is the most humid month in Siam?
The most humid month is January, with an average relative humidity of 80%.
How much does it rain in Siam?
Throughout the year, in Siam, there are 114.9 rainfall days, and 18.39" (467mm) of precipitation is accumulated.
When does it snow in Siam?
January through April, October through December are months with snowfall.
What is the snowiest month in Siam?
January is the month with the most snowfall. Snow falls for 7.8 days and accumulates 2.17" (55mm) of snow.
How many days does it snow in Siam?
In Siam, Iowa, during the entire year, snow falls for 25.2 days and aggregates up to 7.4" (188mm) of snow.
What is the month with the least sunshine in Siam?
With an average of 4.6h of sunshine, January has the least sunshine of the year in Siam, Iowa.
What are the months with the lowest UV index in Siam?
The months with the lowest UV index in Siam, Iowa, are January, February, November and December, with an average maximum UV index of 2.
What is the driest month in Siam?
The month with the least rainfall in Siam is February, when the rain falls for 3.4 days and typically collects 0.43" (11mm) of precipitation.
When is Daylight Saving Time (DST) in Siam?
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.
When it does not snow in Siam?
In Siam, snow does not fall in May through September.
What is the rainiest month in Siam?
June is the month with the most rainfall. Rain falls for 14.8 days and accumulates 3.39" (86mm) of precipitation.
When are the longest days in Siam?
June has the longest days of the year, with an average of 15h and 0min of daylight.
What are the months with the highest UV index in Siam?
The months with the highest UV index in Siam are June through August, with an average maximum UV index of 6.
What time of the year is the hottest in Siam?
July is the warmest month of the year in Siam, Iowa, registering average temperatures as high as 83.8°F (28.8°C) and as low as 66.6°F (19.2°C).
What month has the most sunshine in Siam?
The month with the most sunshine in Siam, Iowa, is July, with an average of 10.4h of sunshine.
What is the least humid month in Siam?
With an average relative humidity of 69%, October is the least humid month.
What is the month with the shortest days in Siam?
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Siam, IA
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (31.1°F).
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure
Siam, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed
Siam, IA
- Average wind speed in January:
9.9mph - Average wind speed in February:
10mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.2mph - Average wind speed in May:
8.6mph - Average wind speed in June:
8mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.8mph - Average wind speed in September:
8mph - Average wind speed in October:
9mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity
Siam, IA
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall
Siam, IA
- Average rainfall in January:
0.51" - Average rainfall in February:
0.43" - Average rainfall in March:
1.06" - Average rainfall in April:
1.42" - Average rainfall in May:
3.15" - Average rainfall in June:
3.39"
- Average rainfall in July:
2.17" - Average rainfall in August:
2.13" - Average rainfall in September:
1.34" - Average rainfall in October:
1.38" - Average rainfall in November:
0.83" - Average rainfall in December:
0.59"
The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days
Siam, IA
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
3.4 days - Average rainfall days in March:
9.4 days - Average rainfall days in April:
12.4 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
13.3 days - Average rainfall days in August:
12.6 days - Average rainfall days in September:
10.1 days - Average rainfall days in October:
8.6 days - Average rainfall days in November:
5.5 days - Average rainfall days in December:
4.3 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (3.4 days).
Average snowfall
Siam, IA
The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Siam, IA
- Average snowfall days in January:
7.8 days - Average snowfall days in February:
6.9 days - Average snowfall days in March:
3.3 days - Average snowfall days in April:
1 days - Average snowfall days in May:
0.1 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:
0.5 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
4.5 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Siam, 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 0min
- 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:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
5h and 3min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
8h and 4min - Average sunshine in June:
10h and 0min
- 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 5min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 0min
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 36min).
Average sunshine days
Siam, IA
- Average sunshine days in January:
21.1 days - Average sunshine days in February:
18.8 days - Average sunshine days in March:
17.8 days - Average sunshine days in April:
15 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
14.2 days - Average sunshine days in August:
15 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
20.2 days - Average sunshine days in November:
22.5 days - Average sunshine days in December:
22 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (12.3 days).
Average UV index
Siam, IA
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
Siam, IA
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility
Siam, IA
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).
Siam, Iowa, USA
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