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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 Saint John, Indiana, is another subzero cold winter month, with temperature in the range of an average high of 29.8°F (-1.2°C) and an average low of 18.9°F (-7.3°C). In Saint John, January is the coldest month, with temperatures averaging a high of 29.8°F (-1.2°C) and a low of 18.9°F (-7.3°C). Weather in January »
Weather in February
The last month of the winter, February, is a cold month in Saint John, Indiana, with an average temperature fluctuating between 34°F (1.1°C) and 21.4°F (-5.9°C). February observes an average high-temperature of a cold 34°F (1.1°C), marking an insignificant difference from January's 29.8°F (-1.2°C). Weather in February »
Weather in March
March, the first month of the spring in Saint John, is a frosty month, with temperature in the range of an average high of 46°F (7.8°C) and an average low of 32.5°F (0.3°C). Saint John experiences a temperature shift with the start of March, with average high-temperatures moving from a wintry 34°F (1.1°C) in February to a chilly 46°F (7.8°C). Weather in March »
Weather in April
April in Saint John, Indiana, is a mild spring month, with an average temperature fluctuating between 57.4°F (14.1°C) and 42.1°F (5.6°C). April's arrival is marked by an increase in the average high-temperature, moving from a frosty 46°F (7.8°C) in March to a mild 57.4°F (14.1°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Saint John, Indiana, with temperature in the range of an average high of 70°F (21.1°C) and an average low of 53.2°F (11.8°C). May's arrival brings a temperature shift, moving from a moderate 57.4°F (14.1°C) in April to a pleasant 70°F (21.1°C). Weather in May »
Weather in June
June, the first month of the summer in Saint John, is a moderately hot month, with an average temperature fluctuating between 78.6°F (25.9°C) and 61.3°F (16.3°C). The average high-temperature mildly increases in June, edging from a pleasant 70°F (21.1°C) in May to a moderately hot 78.6°F (25.9°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Saint John, Indiana, with an average temperature varying between 65.3°F (18.5°C) and 81.5°F (27.5°C). With its high average temperature of 81.5°F (27.5°C) and a low of 65.3°F (18.5°C), July is regarded as the warmest month. The heat index value for July is evaluated at a tropical 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Saint John, is another warm month, with an average temperature fluctuating between 63.7°F (17.6°C) and 79.7°F (26.5°C). Saint John sees the arrival of August with an average high-temperature of a still moderately hot 79.7°F (26.5°C), indicating a subtle variation from July. Weather in August »
Weather in September
September, the first month of the autumn in Saint John, is also a moderately hot month, with an average temperature varying between 74.3°F (23.5°C) and 57.6°F (14.2°C). Saint John's September weather features a light decline in high-temperatures, reducing from a warm 79.7°F (26.5°C) in August to a still moderately hot 74.3°F (23.5°C). Weather in September »
Weather in October
October, like September, in Saint John, Indiana, is another refreshing autumn month, with an average temperature varying between 61.5°F (16.4°C) and 46.8°F (8.2°C). October's arrival coincides with a drop in the average high-temperature, decreasing from September's warm 74.3°F (23.5°C) to an enjoyable 61.5°F (16.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Saint John, is also a frosty month, with an average temperature varying between 47.1°F (8.4°C) and 35.1°F (1.7°C). The onset of November comes with a shift in the average high-temperature, falling from an enjoyable 61.5°F (16.4°C) in October to a frosty 47.1°F (8.4°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Saint John, Indiana, with an average temperature varying between 26.2°F (-3.2°C) and 36°F (2.2°C). Saint John's December weather shows a moderate shift in high-temperatures, falling from November's chilly 47.1°F (8.4°C) to a wintry 36°F (2.2°C). Weather in December »
Updated: Feb 12, 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 part of the year is the coldest in Saint John?
The coldest time of the year is January, with temperatures averaging a high of 29.8°F (-1.2°C) and a low of 18.9°F (-7.3°C).
How much does it rain in Saint John?
Throughout the year, there are 143.5 rainfall days, and 21.02" (534mm) of precipitation is accumulated.
When does it snow in Saint John?
January through April, November and December are months with snowfall.
What is the snowiest month in Saint John?
January is the month with the most snowfall. Snow falls for 11.7 days and accumulates 2.87" (73mm) of snow.
How many days does it snow in Saint John?
In Saint John, during the entire year, snow falls for 43.3 days and aggregates up to 10.43" (265mm) of snow.
What is the month with the least sunshine in Saint John?
January has the least sunshine of the year, with an average of 3.6h of sunshine.
What is the month with the lowest UV index in Saint John?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
What is the most humid month in Saint John?
With an average relative humidity of 83%, February is the most humid month in Saint John.
What is the driest month in Saint John?
The months with the least rainfall in Saint John are February and November Rain falls for 5.3 days and accumulates 0.98" (25mm) of rain.
When is Daylight Saving Time (DST) in Saint John?
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 wettest month in Saint John?
The month with the most rainfall in Saint John, Indiana, is May, when the rain falls for 16.3 days and typically aggregates up to 2.83" (72mm) of precipitation.
When it does not snow in Saint John?
In Saint John, Indiana, snow does not fall in May through October.
When are the longest days in Saint John?
The month with the longest days is June, with an average of 15h and 6min of daylight.
When is the highest UV index in Saint John?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What is the hottest time of year in Saint John?
Saint John's warmest weather arrives in July, when temperatures average a high of 81.5°F (27.5°C) and a low of 65.3°F (18.5°C).
What is the month with the most sunshine in Saint John?
July and August, with an average of 9.9h of sunshine, are months with the most sunshine in Saint John, Indiana.
What is the least humid month in Saint John?
With an average relative humidity of 73%, October is the least humid month.
What is the month with the shortest days in Saint John?
With an average of 9h and 12min of daylight, December has the shortest days of the year in Saint John, Indiana.
Average temperature
Saint John, IN
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (29.8°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 (18.9°F).
Average pressure
Saint John, IN
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Saint John, IN
- Average wind speed in January:
10.2mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.5mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.7mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
Saint John, IN
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Saint John, IN
- Average rainfall in January:
1.02" - Average rainfall in February:
0.98" - Average rainfall in March:
1.18" - Average rainfall in April:
2.2" - Average rainfall in May:
2.83" - Average rainfall in June:
2.72"
- Average rainfall in July:
2.48" - Average rainfall in August:
2.24" - Average rainfall in September:
1.73" - Average rainfall in October:
1.61" - Average rainfall in November:
0.98" - Average rainfall in December:
1.02"
The wettest month (with the highest rainfall) is May (2.83").
The driest months (with the least rainfall) are February and November (0.98").
Average rainfall days
Saint John, IN
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
11 days - Average rainfall days in April:
14.6 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
15.7 days - Average rainfall days in September:
12.9 days - Average rainfall days in October:
12.3 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
7.4 days
The month with the highest number of rainy days is July (17.6 days).
The months with the least rainy days are January and February (5.3 days).
Average snowfall
Saint John, IN
The month with the highest snowfall is January (2.87").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Saint John, IN
- Average snowfall days in January:
11.7 days - Average snowfall days in February:
10.7 days - Average snowfall days in March:
5.9 days - Average snowfall days in April:
1.9 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:
3.5 days - Average snowfall days in December:
9 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Saint John, IN
- 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 1min
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 12min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 4min - 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:
8h and 3min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 1min - 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 36min).
Average sunshine days
Saint John, IN
- Average sunshine days in January:
15.2 days - Average sunshine days in February:
13.1 days - Average sunshine days in March:
15.5 days - Average sunshine days in April:
12.1 days - Average sunshine days in May:
11.7 days - Average sunshine days in June:
11.5 days
- Average sunshine days in July:
10.5 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
16.4 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
16.1 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is July (10.5 days).
Average UV index
Saint John, IN
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
Saint John, IN
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Saint John, IN
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).
Saint John, Indiana, USA
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