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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, in Saint John, Washington, is a wintry winter month, with an average temperature varying between 34.5°F (1.4°C) and 24.6°F (-4.1°C). The transition into January notes an average high-temperature of a still wintry 34.5°F (1.4°C), revealing a mild distinction from the 33.1°F (0.6°C) in December. Weather in January »
Weather in February
February, the last month of the winter in Saint John, is also an icy month, with an average temperature fluctuating between 26.8°F (-2.9°C) and 37.9°F (3.3°C). Saint John starts February with an average high-temperature of a still cold 37.9°F (3.3°C), a minor shift from January's 34.5°F (1.4°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Saint John, Washington, with temperature in the range of an average high of 46.9°F (8.3°C) and an average low of 32.7°F (0.4°C). With the beginning of March, Saint John's average high-temperature sees an increase, transitioning from a cold 37.9°F (3.3°C) in February to a frosty 46.9°F (8.3°C). Weather in March »
Weather in April
April is a mild spring month in Saint John, Washington, with temperature in the range of an average low of 37.4°F (3°C) and an average high of 55.9°F (13.3°C). Saint John's weather shows a temperature rise with the arrival of April, moving from a frosty 46.9°F (8.3°C) in March to a mild 55.9°F (13.3°C). Weather in April »
Weather in May
May, the last month of the spring in Saint John, is an enjoyable month, with an average temperature ranging between min 44.2°F (6.8°C) and max 65.7°F (18.7°C). The onset of May marks an increase in the average high-temperature, moving from a mild 55.9°F (13.3°C) in April to a comfortable 65.7°F (18.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a pleasant month in Saint John, Washington, with temperature in the range of an average high of 72.1°F (22.3°C) and an average low of 49.8°F (9.9°C). June's arrival is noted with a slight increase in the average high-temperature, moving from a refreshing 65.7°F (18.7°C) in May to an agreeable 72.1°F (22.3°C). Weather in June »
Weather in July
July in Saint John, Washington, is a moderately hot summer month, with an average temperature fluctuating between 84.4°F (29.1°C) and 58.6°F (14.8°C). July stands out as Saint John's warmest month, with an average high-temperature of 84.4°F (29.1°C) and a low-temperature of 58.6°F (14.8°C). Throughout July, the heat index is estimated at 84.2°F (29°C). Weather in July »
Weather in August
August, the last month of the summer in Saint John, is also a moderately hot month, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 83.8°F (28.8°C). Saint John registers an average high-temperature of a still moderately hot 83.8°F (28.8°C) with the arrival of August, showing minor deviation from the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Saint John, Washington, with an average temperature ranging between max 72.9°F (22.7°C) and min 53.2°F (11.8°C). In Saint John, the average high-temperature in September decreases from a moderately hot 83.8°F (28.8°C) in August to an agreeable 72.9°F (22.7°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Saint John, Washington, with an average temperature ranging between min 41.9°F (5.5°C) and max 56.8°F (13.8°C). The arrival of October brings a distinct temperature shift, with the average high-temperature dropping from an agreeable 72.9°F (22.7°C) in September to a mild 56.8°F (13.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Saint John, is another chilly month, with temperature in the range of an average high of 43°F (6.1°C) and an average low of 31.8°F (-0.1°C). Saint John's progression into November involves a drop in the average high-temperature, receding from a refreshing 56.8°F (13.8°C) in October to a chilly 43°F (6.1°C). Weather in November »
Weather in December
December, the first month of the winter in Saint John, is still a cold month, with temperature in the range of an average low of 23.9°F (-4.5°C) and an average high of 33.1°F (0.6°C). December is the coldest month of the year, registering average temperatures as high as 33.1°F (0.6°C) and as low as 23.9°F (-4.5°C). Weather in December »
[Resources]Frequently asked questions
What is the most humid month in Saint John?
The most humid month in Saint John is January, with an average relative humidity of 87%.
What is the rainiest month in Saint John?
The wettest months in Saint John, Washington, are January and May, with an average 0.91" (23mm) of rainfall.
How many days does it rain in Saint John?
In Saint John, during the entire year, the rain falls for 84.3 days and collects up to 7.24" (184mm) of precipitation.
When does it snow in Saint John?
January through May, September, November and December are months with snowfall.
How much does it snow in Saint John?
In Saint John, Washington, during the entire year, snow falls for 32.5 days and aggregates up to 14.09" (358mm) of snow.
What is the month with the lowest UV index in Saint John?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Saint John.
What is the snowiest month in Saint John?
The month with the most snowfall is February, when snow falls for 7.6 days and typically aggregates up to 3.82" (97mm) of snow.
When is Daylight Saving Time (DST) in Saint John?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Saint John, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
When it does not snow in Saint John?
In Saint John, Washington, snow does not fall in June through August and October.
When are the longest days in Saint John?
With an average of 15h and 48min of daylight, June has the longest days of the year.
What time of the year is the hottest in Saint John?
The highest temperatures in Saint John are recorded in July, with averages reaching a high of 84.4°F (29.1°C) and a low of 58.6°F (14.8°C).
What is the driest month in Saint John?
July is the month with the least rainfall. Rain falls for 3.5 days and accumulates 0.16" (4mm) of precipitation.
What is the month with the highest UV index in Saint John?
The month with the highest UV index in Saint John is July, with an average maximum UV index of 7.
What is the least humid month in Saint John?
The least humid month in Saint John is August, with an average relative humidity of 36%.
What month has the most sunshine in Saint John?
With an average of 12.1h of sunshine, August has the most sunshine of the year in Saint John, Washington.
What are the coldest months in Saint John?
The month of December sees the average lowest temperatures, reaching 33.1°F (0.6°C) at the peak and 23.9°F (-4.5°C) at the low.
What is the month with the shortest days in Saint John?
December has the shortest days of the year in Saint John, Washington, with an average of 8h and 36min of daylight.
What is the month with the least sunshine in Saint John?
The month with the least sunshine is December, with an average of 4.3h of sunshine.
Average temperature
Saint John, WA
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (33.1°F).
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure
Saint John, WA
- Average pressure in January:
30.19"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.17"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed
Saint John, WA
- Average wind speed in January:
7.4mph - Average wind speed in February:
7.8mph - Average wind speed in March:
8.8mph - Average wind speed in April:
8.6mph - Average wind speed in May:
7.5mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7mph - Average wind speed in October:
7.4mph - Average wind speed in November:
7.8mph - Average wind speed in December:
7.1mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity
Saint John, WA
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (36%).
Average rainfall
Saint John, WA
- Average rainfall in January:
0.91" - Average rainfall in February:
0.71" - Average rainfall in March:
0.79" - Average rainfall in April:
0.63" - Average rainfall in May:
0.91" - Average rainfall in June:
0.59"
- Average rainfall in July:
0.16" - Average rainfall in August:
0.24" - Average rainfall in September:
0.24" - Average rainfall in October:
0.67" - Average rainfall in November:
0.63" - Average rainfall in December:
0.79"
The wettest months (with the highest rainfall) are January and May (0.91").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days
Saint John, WA
- Average rainfall days in January:
7.6 days - Average rainfall days in February:
6.2 days - Average rainfall days in March:
10.1 days - Average rainfall days in April:
9.5 days - Average rainfall days in May:
8.6 days - Average rainfall days in June:
7.7 days
- Average rainfall days in July:
3.5 days - Average rainfall days in August:
4 days - Average rainfall days in September:
5.6 days - Average rainfall days in October:
8.5 days - Average rainfall days in November:
6.5 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is March (10.1 days).
The month with the least rainy days is July (3.5 days).
Average snowfall
Saint John, WA
- Average snowfall in January:
3.7" - Average snowfall in February:
3.82" - Average snowfall in March:
1.26" - Average snowfall in April:
0.71" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and October (0").
Average snowfall days
Saint John, WA
- Average snowfall days in January:
7.4 days - Average snowfall days in February:
7.6 days - Average snowfall days in March:
3.3 days - Average snowfall days in April:
1.6 days - Average snowfall days in May:
0.2 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:
0 days - Average snowfall days in November:
3 days - Average snowfall days in December:
9.3 days
The month with the highest number of snowfall days is December (9.3 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight / Average sunshine
Saint John, WA
- Average daylight in January:
9h and 0min - Average daylight in February:
10h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 1min - Average daylight in June:
15h and 5min
- Average daylight in July:
15h and 3min - Average daylight in August:
14h and 1min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 2min - Average daylight in December:
8h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January:
4h and 3min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 5min - Average sunshine in April:
9h and 3min - Average sunshine in May:
10h and 4min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 1min - Average sunshine in September:
10h and 2min - Average sunshine in October:
6h and 4min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 2min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days
Saint John, WA
- Average sunshine days in January:
17.5 days - Average sunshine days in February:
15.9 days - Average sunshine days in March:
17.5 days - Average sunshine days in April:
18.1 days - Average sunshine days in May:
20.5 days - Average sunshine days in June:
21 days
- Average sunshine days in July:
26.6 days - Average sunshine days in August:
24.3 days - Average sunshine days in September:
23.6 days - Average sunshine days in October:
20.8 days - Average sunshine days in November:
20.3 days - Average sunshine days in December:
19.2 days
The month with the most sunshine days is July (26.6 days).
The month with the least sunshine days is February (15.9 days).
Average UV index
Saint John, WA
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Saint John, WA
The months with the most cloud cover are January and December (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility
Saint John, WA
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Saint John, Washington, USA
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