Climate and monthly weather forecastSaint Johns, AZ
Climate and monthly weather forecast
Weather in January
January, the same as December, in Saint Johns, Arizona, is a frosty winter month, with temperature in the range of an average low of 28.2°F (-2.1°C) and an average high of 45.5°F (7.5°C). With an average high-temperature of 45.5°F (7.5°C) and an average low-temperature of 28.2°F (-2.1°C), January is the coldest month. Weather in January »Weather in February
February, the last month of the winter in Saint Johns, is a fresh month, with an average temperature ranging between min 31.5°F (-0.3°C) and max 50.7°F (10.4°C). As Saint Johns transitions into February, the average high-temperature stands at a fresh 50.7°F (10.4°C), offering little variation from the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a mild month in Saint Johns, Arizona, with an average temperature varying between 38.1°F (3.4°C) and 59.5°F (15.3°C). March sees a marginal temperature increase, moving from a fresh 50.7°F (10.4°C) in February to a refreshing 59.5°F (15.3°C). Weather in March »Weather in April
April is a refreshing spring month in Saint Johns, Arizona, with an average temperature varying between 66.2°F (19°C) and 43°F (6.1°C). April witnesses a subtle temperature ascent, adjusting from a refreshing 59.5°F (15.3°C) in March to a comfortable 66.2°F (19°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Saint Johns, Arizona, with an average temperature varying between 74.1°F (23.4°C) and 50.2°F (10.1°C). The embrace of May brings a minor uplift in the average high-temperature, shifting from a comfortable 66.2°F (19°C) in April to a moderately hot 74.1°F (23.4°C). Weather in May »Weather in June
The first month of the summer, June, is a hot month in Saint Johns, Arizona, with an average temperature fluctuating between 86.5°F (30.3°C) and 61.2°F (16.2°C). June and July are characterised by peak temperatures, with an average high of 86.5°F (30.3°C). Weather in June »Weather in July
July, the same as June, in Saint Johns, Arizona, is another hot summer month, with an average temperature varying between 86.5°F (30.3°C) and 66.6°F (19.2°C). June and July represent the warmest period, with an average high-temperature of 86.5°F (30.3°C). Weather in July »Weather in August
August, the last month of the summer in Saint Johns, is also a moderately hot month, with an average temperature varying between 65.1°F (18.4°C) and 84.7°F (29.3°C). The onset of August brings with it an average high-temperature of a warm 84.7°F (29.3°C), showing a negligible variation from the month before. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Saint Johns, Arizona, with temperature in the range of an average low of 59.2°F (15.1°C) and an average high of 79.5°F (26.4°C). September's advent notes a subtle adjustment in average high-temperature to a still warm 79.5°F (26.4°C) from August. Weather in September »Weather in October
October, the same as September, in Saint Johns, Arizona, is another pleasant autumn month, with an average temperature ranging between max 68.2°F (20.1°C) and min 46.9°F (8.3°C). Transition from September to October is accompanied by a temperature drop, with average high-temperatures decreasing from a warm 79.5°F (26.4°C) to a pleasant 68.2°F (20.1°C). Weather in October »Weather in November
November, the last month of the autumn in Saint Johns, is another mild month, with temperature in the range of an average low of 36.3°F (2.4°C) and an average high of 57.4°F (14.1°C). Saint Johns's average high-temperature decreases in November, falling from an agreeable 68.2°F (20.1°C) in October to a moderate 57.4°F (14.1°C). Weather in November »Weather in December
December, the first month of the winter in Saint Johns, is also a frosty month, with an average temperature varying between 29.1°F (-1.6°C) and 46.6°F (8.1°C). During the transition into December, Saint Johns observes a decrease in the average high-temperature, falling from a refreshing 57.4°F (14.1°C) in November to a frosty 46.6°F (8.1°C). Weather in December »Updated: Aug 22, 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 Johns experiences its average lowest temperatures in January, reaching a peak of 45.5°F (7.5°C) and a minimum of 28.2°F (-2.1°C).
January is the most humid month, with an average relative humidity of 61%.
In Saint Johns, during the entire year, the rain falls for 67.8 days and collects up to 6.34" (161mm) of precipitation.
Months with snowfall in Saint Johns are January through April, November and December.
In Saint Johns, during the entire year, snow falls for 14.9 days and aggregates up to 7.87" (200mm) of snow.
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 3.1 days and typically aggregates up to 2.44" (62mm) of snow.
The months with the least rainfall are May and June Rain falls for 4.3 days and accumulates 0.28" (7mm) of rain.
May through October are months without snowfall in Saint Johns, Arizona.
June and July represent the warmest period, with an average high-temperature of 86.5°F (30.3°C).
June is the least humid month, with an average relative humidity of 21%.
June has the longest days of the year, with an average of 14h and 24min of daylight.
With an average maximum UV index of 7, June is the month with the highest UV index.
July is the month with the most rainfall. Rain falls for 10.2 days and accumulates 0.83" (21mm) of precipitation.
With an average of 12.2h of sunshine, August has the most sunshine of the year.
December has the shortest days of the year, with an average of 9h and 54min of daylight.
Saint Johns, Arizona, does not observe Daylight Saving Time (DST). MST timezone is used over the entire year.
December has the least sunshine of the year, with an average of 7h of sunshine.
Average temperature
Saint Johns, AZ
The warmest months (with the highest average high temperature) are June and July (86.5°F).
The month with the lowest average high temperature is January (45.5°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 (28.2°F).
Average pressure
Saint Johns, AZ
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
29.99"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.89"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Saint Johns, AZ
- Average wind speed in January:
6.2mph - Average wind speed in February:
8.3mph - Average wind speed in March:
9.5mph - Average wind speed in April:
10.8mph - Average wind speed in May:
10.4mph - Average wind speed in June:
9.9mph
- Average wind speed in July:
7.6mph - Average wind speed in August:
7.1mph - Average wind speed in September:
7.4mph - Average wind speed in October:
7.8mph - Average wind speed in November:
7.9mph - Average wind speed in December:
7.4mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is January (6.2mph).
Average humidity
Saint Johns, AZ
The month with the highest relative humidity is January (61%).
The month with the lowest relative humidity is June (21%).
Average rainfall
Saint Johns, AZ
- Average rainfall in January:
0.71" - Average rainfall in February:
0.63" - Average rainfall in March:
0.43" - Average rainfall in April:
0.31" - Average rainfall in May:
0.28" - Average rainfall in June:
0.28"
- Average rainfall in July:
0.83" - Average rainfall in August:
0.79" - Average rainfall in September:
0.55" - Average rainfall in October:
0.35" - Average rainfall in November:
0.51" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is July (0.83").
The driest months (with the least rainfall) are May and June (0.28").
Average rainfall days
Saint Johns, AZ
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
4.8 days - Average rainfall days in March:
5.8 days - Average rainfall days in April:
5.1 days - Average rainfall days in May:
4.3 days - Average rainfall days in June:
3 days
- Average rainfall days in July:
10.2 days - Average rainfall days in August:
9.2 days - Average rainfall days in September:
6.4 days - Average rainfall days in October:
4.4 days - Average rainfall days in November:
2.9 days - Average rainfall days in December:
6 days
The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is November (2.9 days).
Average snowfall
Saint Johns, AZ
The month with the highest snowfall is February (2.44").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Saint Johns, AZ
- Average snowfall days in January:
4 days - Average snowfall days in February:
3.1 days - Average snowfall days in March:
1.3 days - Average snowfall days in April:
0.4 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:
0.1 days - Average snowfall days in November:
1.5 days - Average snowfall days in December:
4.5 days
The month with the highest number of snowfall days is December (4.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Saint Johns, AZ
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 24min
- Average daylight in July:
14h and 12min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
7h and 6min - Average sunshine in February:
8h and 6min - Average sunshine in March:
9h and 18min - Average sunshine in April:
11h and 12min - Average sunshine in May:
11h and 48min - Average sunshine in June:
12h and 0min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
12h and 12min - Average sunshine in September:
10h and 42min - Average sunshine in October:
7h and 36min - Average sunshine in November:
7h and 24min - Average sunshine in December:
7h and 0min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days
Saint Johns, AZ
- Average sunshine days in January:
23.1 days - Average sunshine days in February:
20.7 days - Average sunshine days in March:
24.2 days - Average sunshine days in April:
24.3 days - Average sunshine days in May:
25.3 days - Average sunshine days in June:
25.8 days
- Average sunshine days in July:
17.4 days - Average sunshine days in August:
19.7 days - Average sunshine days in September:
22 days - Average sunshine days in October:
25.3 days - Average sunshine days in November:
25.2 days - Average sunshine days in December:
22 days
The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is July (17.4 days).
Average UV index
Saint Johns, AZ
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover
Saint Johns, AZ
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 9).
Average visibility
Saint Johns, AZ
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).
