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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
Neat rows of plants in a farm with a view of a red farmhouse up the hill in Healdsburg, California
Weather in January
January is a moderate winter month in Healdsburg, California, with an average temperature varying between 57°F (13.9°C) and 41.2°F (5.1°C). Healdsburg registers an average high-temperature of a refreshing 57°F (13.9°C) at the commencement of January, closely related to the preceding month. Weather in January »
Weather in February
The last month of the winter, February, is another refreshing month in Healdsburg, California, with temperature in the range of an average low of 40.6°F (4.8°C) and an average high of 58.6°F (14.8°C). During February, Healdsburg observes a subtle ascent to a still moderate 58.6°F (14.8°C) from January's 57°F (13.9°C) in the average high-temperature. Weather in February »
Weather in March
The first month of the spring, March, is also a moderate month in Healdsburg, California, with an average temperature ranging between max 60.4°F (15.8°C) and min 41.2°F (5.1°C). Healdsburg's average high-temperature marks a still mild 60.4°F (15.8°C) with the advent of March, closely mirroring that of the preceding month. Weather in March »
Weather in April
April is an enjoyable spring month in Healdsburg, California, with an average temperature varying between 66°F (18.9°C) and 43.5°F (6.4°C). The beginning of April signals a minor rise in the average high-temperature, moving from a moderate 60.4°F (15.8°C) in March to an enjoyable 66°F (18.9°C). Weather in April »
Weather in May
May, the last month of the spring in Healdsburg, is an agreeable month, with temperature in the range of an average high of 71.4°F (21.9°C) and an average low of 47.3°F (8.5°C). The start of May is characterized by a subtle increase in the average high-temperature, transitioning from a comfortable 66°F (18.9°C) in April to an agreeable 71.4°F (21.9°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Healdsburg, California, with an average temperature fluctuating between 52.9°F (11.6°C) and 79.9°F (26.6°C). June introduces a minor temperature shift, with average high-temperatures adjusting from May's agreeable 71.4°F (21.9°C) to a moderately hot 79.9°F (26.6°C). Weather in June »
Weather in July
July, like June, in Healdsburg, California, is a moderately hot summer month, with an average temperature ranging between max 84.7°F (29.3°C) and min 54.7°F (12.6°C). July, on average, is the warmest month, registering a high temperature of 84.7°F (29.3°C) and a low of 54.7°F (12.6°C). July's heat index is evaluated at a hot 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Healdsburg, California, with an average temperature ranging between min 55°F (12.8°C) and max 84.6°F (29.2°C). The introduction of August sees an average high-temperature of a still warm 84.6°F (29.2°C), hardly deviating from July. Weather in August »
Weather in September
September, the first month of the autumn in Healdsburg, is still a warm month, with an average temperature ranging between max 82.6°F (28.1°C) and min 53.6°F (12°C). The ushering in of September brings an average high-temperature of a still moderately hot 82.6°F (28.1°C), closely mirroring the 84.6°F (29.2°C) of August. Weather in September »
Weather in October
October, like September, in Healdsburg, California, is a moderately hot autumn month, with an average temperature fluctuating between 50.4°F (10.2°C) and 73.8°F (23.2°C). The arrival of October corresponds with a minor reduction in the average high-temperature, down from September's moderately hot 82.6°F (28.1°C) to a still warm 73.8°F (23.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Healdsburg, is also an enjoyable month, with an average temperature ranging between max 63.5°F (17.5°C) and min 44.2°F (6.8°C). The start of November signals a decrease in the average high-temperature, transitioning from a moderately hot 73.8°F (23.2°C) in October to a refreshing 63.5°F (17.5°C). Weather in November »
Weather in December
December, the first month of the winter in Healdsburg, is also a fresh month, with temperature in the range of an average low of 40.1°F (4.5°C) and an average high of 55°F (12.8°C). December is the coldest month, with the temperature often reaching an average high of 55°F (12.8°C) and an average low of 40.1°F (4.5°C). Weather in December »
Updated: Aug 20, 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
How many days does it rain?
In Healdsburg, California, during the entire year, the rain falls for 81.2 days and collects up to 19.84" (504mm) of precipitation.
When it does not snow?
January, March through December are months without snowfall.
How much does it snow?
In Healdsburg, during the entire year, snow aggregates up to 0.04" (1mm).
What are the months with the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3.
What is the wettest month?
February is the month with the most rainfall. Rain falls for 9.5 days and accumulates 4.33" (110mm) of precipitation.
When does it snow?
February is the only month when snow falls.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 0.1 days and accumulates 0.04" (1mm) of snow.
What is the most humid month?
With an average relative humidity of 76%, March is the most humid month.
When is Daylight Saving Time (DST)?
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 are the longest days?
With an average of 14h and 48min of daylight, June has the longest days of the year.
What are the months with the highest UV index?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What is the warmest month?
July stands out as Healdsburg's warmest month, with temperatures ranging between an average high of 84.7°F (29.3°C) and a low of 54.7°F (12.6°C).
What is the driest month?
The months with the least rainfall are July and August Rain falls for 1 days and accumulates 0.04" (1mm) of rain.
What month has the most sunshine?
With an average of 12h of sunshine, July has the most sunshine of the year.
What is the least humid month?
With an average relative humidity of 57%, September is the least humid month in Healdsburg.
What are the coldest months?
With average temperatures fluctuating between a high of 55°F (12.8°C) and a low of 40.1°F (4.5°C), December stands out as the coldest month.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 30min of daylight.
What is the month with the least sunshine?
The month with the least sunshine is December, with an average of 5.6h of sunshine.
Average temperature
Healdsburg, CA
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (55°F).
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).
Average pressure
Healdsburg, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed
Healdsburg, CA
- Average wind speed in January:
4.7mph - Average wind speed in February:
5.5mph - Average wind speed in March:
5.7mph - Average wind speed in April:
6.2mph - Average wind speed in May:
6.2mph - Average wind speed in June:
6mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.6mph - Average wind speed in September:
4.7mph - Average wind speed in October:
4.7mph - Average wind speed in November:
4.5mph - Average wind speed in December:
4.7mph
The windiest months (with the highest average wind speed) are April and May (6.2mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).
Average humidity
Healdsburg, CA
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (57%).
Average rainfall
Healdsburg, CA
- Average rainfall in January:
3.5" - Average rainfall in February:
4.33" - Average rainfall in March:
3.31" - Average rainfall in April:
1.06" - Average rainfall in May:
0.98" - Average rainfall in June:
0.16"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.12" - Average rainfall in October:
1.06" - Average rainfall in November:
1.81" - Average rainfall in December:
3.43"
The wettest month (with the highest rainfall) is February (4.33").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days
Healdsburg, CA
- Average rainfall days in January:
10.7 days - Average rainfall days in February:
9.5 days - Average rainfall days in March:
14.2 days - Average rainfall days in April:
9.2 days - Average rainfall days in May:
6.2 days - Average rainfall days in June:
2.3 days
- Average rainfall days in July:
1 days - Average rainfall days in August:
0.8 days - Average rainfall days in September:
2.2 days - Average rainfall days in October:
5.3 days - Average rainfall days in November:
8.3 days - Average rainfall days in December:
11.5 days
The month with the highest number of rainy days is March (14.2 days).
The month with the least rainy days is August (0.8 days).
Average snowfall
Healdsburg, CA
The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days
Healdsburg, CA
- Average snowfall days in January:
0 days - Average snowfall days in February:
0.1 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 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 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
Healdsburg, CA
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 3min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
5h and 4min - Average sunshine in February:
6h and 1min - Average sunshine in March:
7h and 2min - Average sunshine in April:
10h and 0min - Average sunshine in May:
10h and 4min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 5min - Average sunshine in September:
11h and 0min - Average sunshine in October:
6h and 5min - Average sunshine in November:
6h and 3min - Average sunshine in December:
5h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days
Healdsburg, CA
- Average sunshine days in January:
19.1 days - Average sunshine days in February:
17 days - Average sunshine days in March:
14.8 days - Average sunshine days in April:
19.4 days - Average sunshine days in May:
23.4 days - Average sunshine days in June:
27 days
- Average sunshine days in July:
29.8 days - Average sunshine days in August:
29.4 days - Average sunshine days in September:
27 days - Average sunshine days in October:
24.6 days - Average sunshine days in November:
20.9 days - Average sunshine days in December:
18.6 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (14.8 days).
Average UV index
Healdsburg, CA
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
Healdsburg, CA
The month with the most cloud cover is March (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility
Healdsburg, CA
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).
Healdsburg, California, USA
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