Climate and monthly weather forecastAmboy, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Amboy, Illinois, is a freezing cold winter month, with an average temperature varying between 15.1°F (-9.4°C) and 27.5°F (-2.5°C). Amboy's coldest weather arrives in January, when temperatures average a high of 27.5°F (-2.5°C) and a low of 15.1°F (-9.4°C). Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Amboy, Illinois, with temperature in the range of an average high of 31.6°F (-0.2°C) and an average low of 18.7°F (-7.4°C). During February, Amboy observes a subtle ascent to a still subzero cold 31.6°F (-0.2°C) from January's 27.5°F (-2.5°C) in the average high-temperature. Weather in February »Weather in March
March, the first month of the spring in Amboy, is a chilly month, with an average temperature fluctuating between 45.7°F (7.6°C) and 31.3°F (-0.4°C). Amboy's transition into March brings a rise in the average high-temperature, moving from a freezing cold 31.6°F (-0.2°C) in February to a chilly 45.7°F (7.6°C). Weather in March »Weather in April
April in Amboy, Illinois, is a mild spring month, with an average temperature ranging between min 41°F (5°C) and max 57.6°F (14.2°C). April's onset is marked by a temperature increase, moving from a frosty 45.7°F (7.6°C) in March to a refreshing 57.6°F (14.2°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Amboy, Illinois, with an average temperature ranging between max 69.4°F (20.8°C) and min 52.3°F (11.3°C). The start of May brings a rise in the average high-temperature, moving from a refreshing 57.6°F (14.2°C) in April to a pleasant 69.4°F (20.8°C). Weather in May »Weather in June
June, the first month of the summer in Amboy, is a moderately hot month, with an average temperature varying between 61.2°F (16.2°C) and 77.9°F (25.5°C). Amboy, Illinois, observes a slight ascent in average high-temperatures during June, adjusting from an agreeable 69.4°F (20.8°C) in May to a moderately hot 77.9°F (25.5°C). Weather in June »Weather in July
July, like June, in Amboy, Illinois, is another warm summer month, with an average temperature fluctuating between 64°F (17.8°C) and 80.2°F (26.8°C). July brings the highest temperatures, with an average high of 80.2°F (26.8°C) and an average low of 64°F (17.8°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Amboy, Illinois, with temperature in the range of an average low of 61.7°F (16.5°C) and an average high of 78.6°F (25.9°C). With the onset of August, the average high-temperature stands at a still moderately hot 78.6°F (25.9°C), closely aligned with July's 80.2°F (26.8°C). Weather in August »Weather in September
September, the first month of the autumn in Amboy, is also a moderately hot month, with an average temperature ranging between min 55.2°F (12.9°C) and max 73.8°F (23.2°C). The onset of September brings an average high-temperature of a still moderately hot 73.8°F (23.2°C), nearly matching the August temperature. Weather in September »Weather in October
October, the same as September, in Amboy, Illinois, is a moderate autumn month, with an average temperature varying between 60.3°F (15.7°C) and 44.6°F (7°C). The onset of October entails a temperature shift, as the average high-temperature decreases from a warm 73.8°F (23.2°C) in September to a mild 60.3°F (15.7°C). Weather in October »Weather in November
November, the last month of the autumn in Amboy, is another chilly month, with an average temperature ranging between max 45.5°F (7.5°C) and min 32.7°F (0.4°C). The beginning of November signals a clear reduction in the average high-temperature, falling from a mild 60.3°F (15.7°C) in October to a frosty 45.5°F (7.5°C). Weather in November »Weather in December
December, the first month of the winter in Amboy, is also an icy month, with an average temperature fluctuating between 34°F (1.1°C) and 23.5°F (-4.7°C). The commencement of December indicates a shift in the average high-temperature, receding from November's chilly 45.5°F (7.5°C) to a wintry 34°F (1.1°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Amboy, IL
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.5°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure
Amboy, IL
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Amboy, IL
- Average wind speed in January:
10.1mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Amboy, IL
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Amboy, IL
- Average rainfall in January:
0.71" - Average rainfall in February:
0.67" - Average rainfall in March:
1.02" - Average rainfall in April:
1.77" - Average rainfall in May:
2.68" - Average rainfall in June:
2.05"
- Average rainfall in July:
1.81" - Average rainfall in August:
1.5" - Average rainfall in September:
1.22" - Average rainfall in October:
1.46" - Average rainfall in November:
0.94" - Average rainfall in December:
0.83"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days
Amboy, IL
- Average rainfall days in January:
4.3 days - Average rainfall days in February:
4.4 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
16.6 days - Average rainfall days in June:
16.1 days
- Average rainfall days in July:
14.3 days - Average rainfall days in August:
13 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
11 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
5.9 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (4.3 days).
Average snowfall
Amboy, IL
The month with the highest snowfall is January (2.32").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Amboy, IL
- Average snowfall days in January:
10.4 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
1.2 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:
2.5 days - Average snowfall days in December:
8 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Amboy, IL
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 12min
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 48min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 18min - Average sunshine in April:
7h and 48min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
9h and 42min - Average sunshine in August:
9h and 36min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 6min
The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Amboy, IL
- Average sunshine days in January:
17.4 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
16.5 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
12.2 days - Average sunshine days in August:
15.7 days - Average sunshine days in September:
18.3 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
18.8 days - Average sunshine days in December:
18.8 days
The months with the most sunshine days are November and December (18.8 days).
The month with the least sunshine days is June (11.1 days).
Average UV index
Amboy, IL
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Amboy, IL
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility
Amboy, IL
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).





