Climate and monthly weather forecastSaint John, UT
Climate and monthly weather forecast
Weather in January
January, like December, in Saint John, Utah, is another cold winter month, with an average temperature varying between 18.9°F (-7.3°C) and 32.4°F (0.2°C). January, known for its average high temperature of 32.4°F (0.2°C) and an average low temperature of 18.9°F (-7.3°C), is the coldest month. Weather in January »Weather in February
February, the last month of the winter in Saint John, is another cold month, with an average temperature ranging between min 23°F (-5°C) and max 36.7°F (2.6°C). Welcoming February, Saint John notes an average high-temperature of a still wintry 36.7°F (2.6°C), nearly consistent with January's 32.4°F (0.2°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Saint John, Utah, with an average temperature varying between 46.9°F (8.3°C) and 32°F (0°C). Saint John's March weather brings a rise in high-temperatures, moving from a cold 36.7°F (2.6°C) in February to a frosty 46.9°F (8.3°C). Weather in March »Weather in April
April is a cool spring month in Saint John, Utah, with an average temperature ranging between max 54.1°F (12.3°C) and min 36.1°F (2.3°C). With the onset of April, Saint John's weather sees a minor temperature rise, transitioning from a chilly 46.9°F (8.3°C) in March to a fresh 54.1°F (12.3°C). Weather in April »Weather in May
May, the last month of the spring in Saint John, is a comfortable month, with an average temperature ranging between max 64.4°F (18°C) and min 43.9°F (6.6°C). May comes with an increase, with the average high-temperature moving from a fresh 54.1°F (12.3°C) in April to an enjoyable 64.4°F (18°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 varying between 77.9°F (25.5°C) and 53.8°F (12.1°C). In June, the average high-temperature increases from a refreshing 64.4°F (18°C) in May to a warm 77.9°F (25.5°C). Weather in June »Weather in July
July is a hot summer month in Saint John, Utah, with an average temperature fluctuating between 86.5°F (30.3°C) and 63°F (17.2°C). The warmest time of the year is July, with temperatures averaging a high of 86.5°F (30.3°C) and a low of 63°F (17.2°C). Weather in July »Weather in August
August, the last month of the summer in Saint John, is also a moderately hot month, with an average temperature varying between 61.9°F (16.6°C) and 84.4°F (29.1°C). The introduction of August notes a subtle temperature variation to a moderately hot 84.4°F (29.1°C) from July's 86.5°F (30.3°C). 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 ranging between max 74.5°F (23.6°C) and min 54.5°F (12.5°C). With September's arrival, Saint John sees a decrease in average high-temperatures, moving from a warm 84.4°F (29.1°C) in August to a still moderately hot 74.5°F (23.6°C). Weather in September »Weather in October
October, the same as September, in Saint John, Utah, is another mild autumn month, with an average temperature fluctuating between 40.6°F (4.8°C) and 57.7°F (14.3°C). A notable decrease in the average high-temperature is observed during October, falling from a warm 74.5°F (23.6°C) in September to a moderate 57.7°F (14.3°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Saint John, Utah, with an average temperature ranging between max 45.5°F (7.5°C) and min 29.8°F (-1.2°C). The start of November comes with a reduction in the average high-temperature, receding from a refreshing 57.7°F (14.3°C) in October to a chilly 45.5°F (7.5°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Saint John, Utah, with temperature in the range of an average high of 32.9°F (0.5°C) and an average low of 19.8°F (-6.8°C). December comes with a drop in the average high-temperature, falling from November's chilly 45.5°F (7.5°C) to a cold 32.9°F (0.5°C). Weather in December »Updated: Jul 15, 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
Saint John's coldest month, January, generally records average temperatures ranging from a high of 32.4°F (0.2°C) to a low of 18.9°F (-7.3°C).
With an average relative humidity of 85%, January is the most humid month.
In Saint John, during the entire year, the rain falls for 120.7 days and collects up to 18.39" (467mm) of precipitation.
Months with snowfall in Saint John are January through May, September through December.
The months with the most snowfall are January and December, with an average 12.99" (330mm) of accumulated snow.
In Saint John, during the entire year, snow falls for 68.4 days and aggregates up to 55.94" (1421mm) of snow.
With an average of 5.2h of sunshine, January has the least sunshine of the year.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
The month with the most rainfall is April, when the rain falls for 13.1 days and typically aggregates up to 2.09" (53mm) of precipitation.
The month with the least rainfall is June, when the rain falls for 8.8 days and typically collects 0.79" (20mm) of precipitation.
In Saint John, snow does not fall in June through August.
The month with the longest days is June, with an average of 15h and 0min of daylight.
June through August, with an average maximum UV index of 6, are months with the highest UV index in Saint John.
July proves to be the warmest month, recording an average peak temperature of 86.5°F (30.3°C) and a minimum temperature of 63°F (17.2°C).
July is the least humid month, with an average relative humidity of 33%.
The month with the most sunshine is August, with an average of 11.9h of sunshine.
December has the shortest days of the year, with an average of 9h and 24min of daylight.
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Saint John, UT
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (32.4°F).
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure
Saint John, UT
- Average pressure in January:
30.27"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.89"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.21"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed
Saint John, UT
- Average wind speed in January:
5.3mph - Average wind speed in February:
6.6mph - Average wind speed in March:
7.6mph - Average wind speed in April:
7.7mph - Average wind speed in May:
6.6mph - Average wind speed in June:
7.2mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.5mph - Average wind speed in September:
6.5mph - Average wind speed in October:
6.4mph - Average wind speed in November:
6.6mph - Average wind speed in December:
6.2mph
The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is January (5.3mph).
Average humidity
Saint John, UT
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (33%).
Average rainfall
Saint John, UT
- Average rainfall in January:
1.73" - Average rainfall in February:
1.65" - Average rainfall in March:
1.81" - Average rainfall in April:
2.09" - Average rainfall in May:
1.69" - Average rainfall in June:
0.79"
The wettest month (with the highest rainfall) is April (2.09").
The driest month (with the least rainfall) is June (0.79").
Average rainfall days
Saint John, UT
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
6.8 days - Average rainfall days in March:
12 days - Average rainfall days in April:
13.1 days - Average rainfall days in May:
13.3 days - Average rainfall days in June:
8.8 days
- Average rainfall days in July:
12 days - Average rainfall days in August:
11.9 days - Average rainfall days in September:
10.7 days - Average rainfall days in October:
9.3 days - Average rainfall days in November:
6.5 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is May (13.3 days).
The month with the least rainy days is November (6.5 days).
Average snowfall
Saint John, UT
- Average snowfall in January:
12.99" - Average snowfall in February:
10.71" - Average snowfall in March:
7.64" - Average snowfall in April:
4.29" - Average snowfall in May:
0.51" - Average snowfall in June:
0"
The months with the highest snowfall are January and December (12.99").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Saint John, UT
- Average snowfall days in January:
14.7 days - Average snowfall days in February:
13.9 days - Average snowfall days in March:
9.6 days - Average snowfall days in April:
5.8 days - Average snowfall days in May:
0.8 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:
0.1 days - Average snowfall days in October:
1.7 days - Average snowfall days in November:
7.3 days - Average snowfall days in December:
14.5 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Saint John, UT
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
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 24min).
- Average sunshine in January:
5h and 12min - Average sunshine in February:
6h and 36min - Average sunshine in March:
8h and 0min - Average sunshine in April:
9h and 54min - Average sunshine in May:
11h and 0min - Average sunshine in June:
11h and 48min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 54min - Average sunshine in September:
9h and 48min - Average sunshine in October:
7h and 36min - Average sunshine in November:
6h and 42min - Average sunshine in December:
5h and 36min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days
Saint John, UT
- Average sunshine days in January:
15.3 days - Average sunshine days in February:
11.6 days - Average sunshine days in March:
13.4 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
14.9 days - Average sunshine days in June:
19.2 days
- Average sunshine days in July:
15.3 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
20.1 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
14.1 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is February (11.6 days).
Average UV index
Saint John, UT
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Saint John, UT
The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility
Saint John, UT
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
