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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 daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, the same as December, is another refreshing winter month in Halcyon, California, with temperature in the range of an average low of 47.5°F (8.6°C) and an average high of 63°F (17.2°C). Halcyon's weather in January indicates an average high-temperature of a still refreshing 63°F (17.2°C), nearly consistent with the 61.2°F (16.2°C) of December. Weather in January »
Weather in February
February, the last month of the winter in Halcyon, is also an enjoyable month, with an average temperature fluctuating between 62.2°F (16.8°C) and 46°F (7.8°C). February brings an average high-temperature of a still refreshing 62.2°F (16.8°C), nearly identical to the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is also an enjoyable month in Halcyon, California, with an average temperature varying between 64.9°F (18.3°C) and 46.9°F (8.3°C). Welcoming March, Halcyon notes an average high-temperature of a still enjoyable 64.9°F (18.3°C), nearly consistent with February's 62.2°F (16.8°C). Weather in March »
Weather in April
April, like March, in Halcyon, California, is another enjoyable spring month, with an average temperature varying between 48.6°F (9.2°C) and 67.6°F (19.8°C). As March transitions into April, the average high-temperature rests at a still enjoyable 67.6°F (19.8°C), maintaining a close resemblance to the previous month. Weather in April »
Weather in May
May, the last month of the spring in Halcyon, is an agreeable month, with an average temperature varying between 51.4°F (10.8°C) and 70.5°F (21.4°C). The start of May sees the average high-temperature at an agreeable 70.5°F (21.4°C), showing little difference from April's 67.6°F (19.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Halcyon, California, with an average temperature ranging between max 75.4°F (24.1°C) and min 55°F (12.8°C). During June, Halcyon records an average high-temperature of a moderately hot 75.4°F (24.1°C), marking a slight divergence from May's 70.5°F (21.4°C). Weather in June »
Weather in July
July, like June, in Halcyon, California, is another warm summer month, with an average temperature varying between 78.6°F (25.9°C) and 58.5°F (14.7°C). July's onset records a minor alteration in the average high-temperature to a still warm 78.6°F (25.9°C) from June's 75.4°F (24.1°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Halcyon, California, with an average temperature ranging between max 78.8°F (26°C) and min 59.2°F (15.1°C). With the start of August, Halcyon measures an average high-temperature of a still moderately hot 78.8°F (26°C), not significantly differing from July's 78.6°F (25.9°C). Weather in August »
Weather in September
September, the first month of the autumn in Halcyon, is still a warm month, with an average temperature varying between 59.9°F (15.5°C) and 79.5°F (26.4°C). Halcyon's warmest weather arrives in September, when temperatures average a high of 79.5°F (26.4°C) and a low of 59.9°F (15.5°C). Weather in September »
Weather in October
October, like September, in Halcyon, California, is a moderately hot autumn month, with temperature in the range of an average low of 56.7°F (13.7°C) and an average high of 74.3°F (23.5°C). As October unfolds, the average high-temperature reaches a still warm 74.3°F (23.5°C), hinting at a slight fluctuation from the previous month. Weather in October »
Weather in November
November, the last month of the autumn in Halcyon, is another comfortable month, with an average temperature varying between 51.4°F (10.8°C) and 67.8°F (19.9°C). As November begins, there is a minor decrease in the average high-temperature, softly falling from a moderately hot 74.3°F (23.5°C) in October to a refreshing 67.8°F (19.9°C). Weather in November »
Weather in December
December, the first month of the winter in Halcyon, is still a comfortable month, with an average temperature ranging between min 46.8°F (8.2°C) and max 61.2°F (16.2°C). December is the month when Halcyon experiences its coldest temperatures, averaging a high of 61.2°F (16.2°C) and a low of 46.8°F (8.2°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
How much does it rain?
Throughout the year, there are 47.6 rainfall days, and 6.93" (176mm) of precipitation is accumulated.
What is the month with the lowest UV index?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 4.
What is the month with the least sunshine in Halcyon?
The months with the least sunshine are February and December, with an average of 6.5h of sunshine.
What is the most humid month?
March is the most humid month, with an average relative humidity of 68%.
What is the wettest month?
The month with the most rainfall is March, when the rain falls for 8.4 days and typically aggregates up to 1.61" (41mm) of precipitation.
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.
What is the driest month?
June and August are months with the least rain when the rain falls for 1 days and typically aggregates up to 0.04" (1mm) of rain.
When are the longest days?
The month with the longest days is June, with an average of 14h and 30min of daylight.
What is the month with the most sunshine?
The months with the most sunshine are June through August, with an average of 12h of sunshine.
What are the months with the highest UV index?
June and August, with an average maximum UV index of 6, are months with the highest UV index.
What time of the year is the hottest?
September, known for its average high temperature of 79.5°F (26.4°C) and an average low temperature of 59.9°F (15.5°C), is the warmest month.
What is the least humid month?
October is the least humid month, with an average relative humidity of 58%.
What is the coldest time of year?
In Halcyon, December is the month with the lowest recorded average temperatures, measuring a high of 61.2°F (16.2°C) and a low of 46.8°F (8.2°C).
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 48min of daylight.
Average temperature
Halcyon, CA
The warmest month (with the highest average high temperature) is September (79.5°F).
The month with the lowest average high temperature is December (61.2°F).
The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is February (46°F).
Average pressure
Halcyon, CA
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.91"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed
Halcyon, CA
- Average wind speed in January:
6.2mph - Average wind speed in February:
6.8mph - Average wind speed in March:
6.8mph - Average wind speed in April:
7.3mph - Average wind speed in May:
7.3mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.7mph - Average wind speed in September:
5.8mph - Average wind speed in October:
6.1mph - Average wind speed in November:
6mph - Average wind speed in December:
6.5mph
The windiest months (with the highest average wind speed) are April and May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity
Halcyon, CA
The month with the highest relative humidity is March (68%).
The month with the lowest relative humidity is October (58%).
Average rainfall
Halcyon, CA
- Average rainfall in January:
1.22" - Average rainfall in February:
1.22" - Average rainfall in March:
1.61" - Average rainfall in April:
0.47" - Average rainfall in May:
0.16" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.12" - Average rainfall in August:
0.04" - Average rainfall in September:
0.08" - Average rainfall in October:
0.35" - Average rainfall in November:
0.59" - Average rainfall in December:
1.02"
The wettest month (with the highest rainfall) is March (1.61").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days
Halcyon, CA
- Average rainfall days in January:
5.5 days - Average rainfall days in February:
6.4 days - Average rainfall days in March:
8.4 days - Average rainfall days in April:
5.4 days - Average rainfall days in May:
3 days - Average rainfall days in June:
1 days
- Average rainfall days in July:
2.5 days - Average rainfall days in August:
0.8 days - Average rainfall days in September:
1.8 days - Average rainfall days in October:
2.9 days - Average rainfall days in November:
3.5 days - Average rainfall days in December:
6.4 days
The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is August (0.8 days).
Average daylight / Average sunshine
Halcyon, CA
- Average daylight in January:
10h and 1min - 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 0min - Average daylight in June:
14h and 3min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
6h and 5min - Average sunshine in February:
6h and 3min - Average sunshine in March:
8h and 4min - Average sunshine in April:
10h and 5min - Average sunshine in May:
11h and 2min - Average sunshine in June:
12h and 0min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
11h and 2min - Average sunshine in October:
7h and 4min - Average sunshine in November:
7h and 1min - Average sunshine in December:
6h and 3min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days
Halcyon, CA
- Average sunshine days in January:
24.3 days - Average sunshine days in February:
21 days - Average sunshine days in March:
22.2 days - Average sunshine days in April:
24.3 days - Average sunshine days in May:
27.2 days - Average sunshine days in June:
28.5 days
- Average sunshine days in July:
27.5 days - Average sunshine days in August:
29.6 days - Average sunshine days in September:
28.2 days - Average sunshine days in October:
27.4 days - Average sunshine days in November:
25.5 days - Average sunshine days in December:
24 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is February (21 days).
Average UV index
Halcyon, CA
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover
Halcyon, CA
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility
Halcyon, 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).