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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 is a frosty winter month in Rochester, Washington, with temperature in the range of an average low of 34.2°F (1.2°C) and an average high of 44.8°F (7.1°C). The high-temperature average in January for Rochester is a chilly 44.8°F (7.1°C), staying closely aligned with December's conditions. Weather in January »
Weather in February
February, the last month of the winter in Rochester, is another chilly month, with an average temperature ranging between min 33.4°F (0.8°C) and max 46.2°F (7.9°C). The commencement of February records an average high-temperature of a still chilly 46.2°F (7.9°C), barely varying from January's 44.8°F (7.1°C). Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Rochester, Washington, with an average temperature varying between 50.5°F (10.3°C) and 35.2°F (1.8°C). Rochester's shift into March is marked by a subtle change to a fresh 50.5°F (10.3°C) from February's 46.2°F (7.9°C) in temperature. Weather in March »
Weather in April
April is a refreshing spring month in Rochester, Washington, with an average temperature ranging between max 56.7°F (13.7°C) and min 37.4°F (3°C). April showcases a minor temperature ascent, adjusting from March's cool 50.5°F (10.3°C) to a mild 56.7°F (13.7°C). Weather in April »
Weather in May
May, the last month of the spring in Rochester, is a comfortable month, with an average temperature fluctuating between 64.9°F (18.3°C) and 41.2°F (5.1°C). Rochester observes a slight uplift in the average high-temperature with the onset of May, adjusting from April's refreshing 56.7°F (13.7°C) to a comfortable 64.9°F (18.3°C). Weather in May »
Weather in June
June, the first month of the summer in Rochester, is a pleasant month, with temperature in the range of an average low of 45°F (7.2°C) and an average high of 69.8°F (21°C). As May turns into June, the average high-temperatures rest at an agreeable 69.8°F (21°C), showing a minor variation from the prior month. Weather in June »
Weather in July
July in Rochester, Washington, is a warm summer month, with an average temperature fluctuating between 48.6°F (9.2°C) and 76.6°F (24.8°C). As Rochester welcomes July, the average high-temperature displays a subtle shift, adjusting from an agreeable 69.8°F (21°C) in June to a moderately hot 76.6°F (24.8°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Rochester, Washington, with an average temperature varying between 77.4°F (25.2°C) and 49.8°F (9.9°C). August is the month when Rochester's temperatures reach their peak, with averages of 77.4°F (25.2°C) and lows of 49.8°F (9.9°C). Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Rochester, Washington, with an average temperature ranging between max 70.2°F (21.2°C) and min 47.3°F (8.5°C). In Rochester, the average high-temperature in September gently drops from a moderately hot 77.4°F (25.2°C) in August to a pleasant 70.2°F (21.2°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Rochester, Washington, with an average temperature ranging between max 58.6°F (14.8°C) and min 42.1°F (5.6°C). Stepping into October, Rochester observes a temperature decline, with the average high falling from September's pleasant 70.2°F (21.2°C) to a refreshing 58.6°F (14.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Rochester, Washington, with an average temperature fluctuating between 37.9°F (3.3°C) and 48.4°F (9.1°C). November's onset brings a reduction in the average high-temperature, from a mild 58.6°F (14.8°C) in October to a chilly 48.4°F (9.1°C). Weather in November »
Weather in December
December, the first month of the winter in Rochester, is also an icy month, with an average temperature varying between 33.1°F (0.6°C) and 42.6°F (5.9°C). Rochester notes the coldest temperatures in December, with a high average of 42.6°F (5.9°C) and a low of 33.1°F (0.6°C). Weather in December »
[Resources]Frequently asked questions
What is the wettest month in Rochester?
The month with the most rainfall in Rochester, Washington, is January, when the rain falls for 17.8 days and typically aggregates up to 3.86" (98mm) of precipitation.
How much does it rain in Rochester?
Throughout the year, in Rochester, Washington, there are 168 rainfall days, and 23.94" (608mm) of precipitation is accumulated.
When does it snow in Rochester?
Months with snowfall in Rochester are January through March, November and December.
How much does it snow in Rochester?
Throughout the year, in Rochester, there are 7.9 snowfall days, and 4.02" (102mm) of snow is accumulated.
What are the months with the lowest UV index in Rochester?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rochester, Washington.
When does it snow the most in Rochester?
February is the month with the most snowfall in Rochester. Snow falls for 2.7 days and accumulates 1.54" (39mm) of snow.
When is Daylight Saving Time (DST) in Rochester?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 Rochester?
April through October are months without snowfall in Rochester, Washington.
When are the longest days in Rochester?
With an average of 15h and 48min of daylight, June has the longest days of the year.
What are the months with the highest UV index in Rochester?
June and July, with an average maximum UV index of 5, are months with the highest UV index in Rochester, Washington.
What is the least humid month in Rochester?
The least humid month in Rochester, Washington, is July, with an average relative humidity of 73%.
What is the driest month in Rochester?
July is the month with the least rainfall in Rochester. Rain falls for 6.3 days and accumulates 0.35" (9mm) of precipitation.
What month is the hottest in Rochester?
The highest temperatures in Rochester, Washington, are recorded in August, with averages reaching a high of 77.4°F (25.2°C) and a low of 49.8°F (9.9°C).
What month has the most sunshine in Rochester?
With an average of 10.1h of sunshine, August has the most sunshine of the year in Rochester.
What is the most humid month in Rochester?
November is the most humid month in Rochester, with an average relative humidity of 90%.
What month is the coldest in Rochester?
The coldest temperatures in Rochester, Washington, occur during December, when averages reach a peak of 42.6°F (5.9°C) and a low of 33.1°F (0.6°C).
What is the month with the shortest days in Rochester?
The month with the shortest days in Rochester, Washington, is December, with an average of 8h and 36min of daylight.
What is the month with the least sunshine in Rochester?
With an average of 3.5h of sunshine, December has the least sunshine of the year.
Average temperature
Rochester, WA
The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is December (42.6°F).
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (33.1°F).
Average pressure
Rochester, WA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
30.06"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.04"Hg
- Average pressure in July:
30.06"Hg - Average pressure in August:
30.02"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.04"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.02"Hg).
Average wind speed
Rochester, WA
- Average wind speed in January:
4.5mph - Average wind speed in February:
4.3mph - Average wind speed in March:
4.5mph - Average wind speed in April:
4.4mph - Average wind speed in May:
4mph - Average wind speed in June:
4.2mph
- Average wind speed in July:
4mph - Average wind speed in August:
3.8mph - Average wind speed in September:
3.6mph - Average wind speed in October:
3.9mph - Average wind speed in November:
4.5mph - Average wind speed in December:
4.2mph
The windiest months (with the highest average wind speed) are January, March and November (4.5mph).
The calmest month (with the lowest average wind speed) is September (3.6mph).
Average humidity
Rochester, WA
The month with the highest relative humidity is November (90%).
The month with the lowest relative humidity is July (73%).
Average rainfall
Rochester, WA
- Average rainfall in January:
3.86" - Average rainfall in February:
2.32" - Average rainfall in March:
2.6" - Average rainfall in April:
1.85" - Average rainfall in May:
1.34" - Average rainfall in June:
1.06"
- Average rainfall in July:
0.35" - Average rainfall in August:
0.39" - Average rainfall in September:
1.14" - Average rainfall in October:
2.76" - Average rainfall in November:
2.52" - Average rainfall in December:
3.74"
The wettest month (with the highest rainfall) is January (3.86").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days
Rochester, WA
- Average rainfall days in January:
17.8 days - Average rainfall days in February:
15.9 days - Average rainfall days in March:
19.8 days - Average rainfall days in April:
17.6 days - Average rainfall days in May:
13.4 days - Average rainfall days in June:
10.9 days
- Average rainfall days in July:
6.3 days - Average rainfall days in August:
5.6 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
14.9 days - Average rainfall days in November:
17.3 days - Average rainfall days in December:
17.9 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (5.6 days).
Average snowfall
Rochester, WA
The month with the highest snowfall is February (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Rochester, WA
- Average snowfall days in January:
1.8 days - Average snowfall days in February:
2.7 days - Average snowfall days in March:
1.5 days - Average snowfall days in April:
0.1 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 days - Average snowfall days in November:
0.6 days - Average snowfall days in December:
1.2 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Rochester, 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 2min - 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:
3h and 4min - Average sunshine in February:
3h and 4min - Average sunshine in March:
4h and 5min - Average sunshine in April:
6h and 5min - Average sunshine in May:
8h and 0min - Average sunshine in June:
8h and 4min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 2min - Average sunshine in October:
4h and 5min - Average sunshine in November:
4h and 0min - Average sunshine in December:
3h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days
Rochester, WA
- Average sunshine days in January:
10.7 days - Average sunshine days in February:
9.3 days - Average sunshine days in March:
9.3 days - Average sunshine days in April:
10.1 days - Average sunshine days in May:
14.8 days - Average sunshine days in June:
15.8 days
- Average sunshine days in July:
20.8 days - Average sunshine days in August:
20.9 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
14.3 days - Average sunshine days in November:
10.5 days - Average sunshine days in December:
10.8 days
The month with the most sunshine days is August (20.9 days).
The months with the least sunshine days are February and March (9.3 days).
Average UV index
Rochester, WA
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Rochester, WA
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility
Rochester, WA
The month with the highest visibility is July (5mi).
The months with the lowest visibility are January, February, March, April, May, June, August, September, October, November and December (4mi).
Rochester, Washington, USA
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