Climate and monthly weather forecastSignal Hill, CA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another enjoyable winter month in Signal Hill, California, with temperature in the range of an average high of 65.1°F (18.4°C) and an average low of 52.9°F (11.6°C). As January takes hold, the average high-temperature is a still refreshing 65.1°F (18.4°C), nearly mirroring that of the previous month. Weather in January »Weather in February
February, the last month of the winter in Signal Hill, is another comfortable month, with an average temperature fluctuating between 64°F (17.8°C) and 52°F (11.1°C). February commences with an average high-temperature of a still comfortable 64°F (17.8°C), showing little deviation from January's 65.1°F (18.4°C). Weather in February »Weather in March
March, the first month of the spring in Signal Hill, is still a comfortable month, with an average temperature ranging between max 66.4°F (19.1°C) and min 53.1°F (11.7°C). The shift into March finds Signal Hill at an average high-temperature of a still enjoyable 66.4°F (19.1°C), closely comparable to February's conditions. Weather in March »Weather in April
April is an agreeable spring month in Signal Hill, California, with an average temperature ranging between max 68.5°F (20.3°C) and min 55°F (12.8°C). Signal Hill's weather in April, with an average high-temperature of a pleasant 68.5°F (20.3°C), subtly shifts from March's 66.4°F (19.1°C). Weather in April »Weather in May
The last month of the spring, May, is another pleasant month in Signal Hill, California, with an average temperature varying between 57°F (13.9°C) and 70°F (21.1°C). The average high-temperature during May registers at a still pleasant 70°F (21.1°C), maintaining a close resemblance to the previous month. Weather in May »Weather in June
The first month of the summer, June, is also an agreeable month in Signal Hill, California, with an average temperature fluctuating between 73°F (22.8°C) and 59.2°F (15.1°C). Signal Hill greets June with an average high-temperature of a still pleasant 73°F (22.8°C), marking a slight deviation from the preceding month. Weather in June »Weather in July
July is a moderately hot summer month in Signal Hill, California, with temperature in the range of an average low of 63.5°F (17.5°C) and an average high of 77.5°F (25.3°C). Signal Hill registers an average high-temperature of a moderately hot 77.5°F (25.3°C) at the commencement of July, closely related to the preceding month. Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Signal Hill, California, with an average temperature fluctuating between 79.5°F (26.4°C) and 64.9°F (18.3°C). August stands out as Signal Hill's warmest month, with an average high-temperature of 79.5°F (26.4°C) and a low-temperature of 64.9°F (18.3°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Signal Hill, California, with an average temperature fluctuating between 64.8°F (18.2°C) and 78.8°F (26°C). In Signal Hill, September's average high-temperature stands at a still warm 78.8°F (26°C), closely related to the preceding month. Weather in September »Weather in October
October, the same as September, is a moderately hot autumn month in Signal Hill, California, with an average temperature fluctuating between 75°F (23.9°C) and 62.2°F (16.8°C). The average high-temperature is a still warm 75°F (23.9°C) in October, hardly different from the 78.8°F (26°C) recorded in September. Weather in October »Weather in November
November, the last month of the autumn in Signal Hill, is another pleasant month, with an average temperature fluctuating between 57.4°F (14.1°C) and 70°F (21.1°C). With November's advent, Signal Hill sees an average high-temperature of a pleasant 70°F (21.1°C), subtly shifted from October's 75°F (23.9°C). Weather in November »Weather in December
The first month of the winter, December, is still a refreshing month in Signal Hill, California, with an average temperature fluctuating between 63.5°F (17.5°C) and 52.7°F (11.5°C). December, on average, is the coldest month, registering a high temperature of 63.5°F (17.5°C) and a low of 52.7°F (11.5°C). Weather in December »Updated: Aug 1, 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
In Signal Hill, during the entire year, the rain falls for 47.2 days and collects up to 5.59" (142mm) of precipitation.
January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4.
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.
The most humid month is June, with an average relative humidity of 71%.
June is the month with the least rainfall. Rain falls for 1.8 days and accumulates 0.08" (2mm) of precipitation.
The month with the longest days in Signal Hill is June, with an average of 14h and 24min of daylight.
The months with the highest UV index are June through September, with an average maximum UV index of 6.
The months with the most sunshine are July and August, with an average of 12h of sunshine.
August, with average temperatures reaching a high of 79.5°F (26.4°C) and a low of 64.9°F (18.3°C), is the warmest month.
The least humid month is November, with an average relative humidity of 55%.
In Signal Hill, the average lowest temperatures are observed in December, with a high of 63.5°F (17.5°C) and a low of 52.7°F (11.5°C).
The month with the most rainfall is December, when the rain falls for 5.1 days and typically aggregates up to 1.14" (29mm) of precipitation.
With an average of 10h and 0min of daylight, December has the shortest days of the year.
Average temperature
Signal Hill, CA
The warmest month (with the highest average high temperature) is August (79.5°F).
The month with the lowest average high temperature is December (63.5°F).
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (52°F).
Average pressure
Signal Hill, CA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.89"Hg - Average pressure in October:
29.95"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed
Signal Hill, CA
- Average wind speed in January:
5.5mph - Average wind speed in February:
5.6mph - Average wind speed in March:
5.9mph - Average wind speed in April:
6.5mph - Average wind speed in May:
6.2mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
5.3mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5mph - Average wind speed in October:
5mph - Average wind speed in November:
5.3mph - Average wind speed in December:
5.5mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (5mph).
Average humidity
Signal Hill, CA
The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (55%).
Average rainfall
Signal Hill, CA
- Average rainfall in January:
0.98" - Average rainfall in February:
0.79" - Average rainfall in March:
0.67" - Average rainfall in April:
0.31" - Average rainfall in May:
0.16" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.28" - Average rainfall in August:
0.2" - Average rainfall in September:
0.24" - Average rainfall in October:
0.28" - Average rainfall in November:
0.47" - Average rainfall in December:
1.14"
The wettest month (with the highest rainfall) is December (1.14").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days
Signal Hill, CA
- Average rainfall days in January:
4.1 days - Average rainfall days in February:
4.7 days - Average rainfall days in March:
6 days - Average rainfall days in April:
4.8 days - Average rainfall days in May:
3.4 days - Average rainfall days in June:
1.8 days
- Average rainfall days in July:
3.6 days - Average rainfall days in August:
2.6 days - Average rainfall days in September:
3.3 days - Average rainfall days in October:
3.7 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
5.1 days
The month with the highest number of rainy days is March (6 days).
The month with the least rainy days is June (1.8 days).
Average daylight / Average sunshine
Signal Hill, CA
- 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:
13h and 54min - Average daylight in June:
14h and 24min
- Average daylight in July:
14h and 6min - 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:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
6h and 48min - Average sunshine in February:
6h and 48min - Average sunshine in March:
8h and 48min - Average sunshine in April:
11h and 0min - Average sunshine in May:
11h and 12min - Average sunshine in June:
11h and 42min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 36min - Average sunshine in October:
8h and 24min - Average sunshine in November:
7h and 6min - Average sunshine in December:
6h and 48min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days
Signal Hill, CA
- Average sunshine days in January:
25.7 days - Average sunshine days in February:
22.4 days - Average sunshine days in March:
24.7 days - Average sunshine days in April:
24.4 days - Average sunshine days in May:
23 days - Average sunshine days in June:
20.8 days
- Average sunshine days in July:
24.1 days - Average sunshine days in August:
24.5 days - Average sunshine days in September:
22.7 days - Average sunshine days in October:
24.4 days - Average sunshine days in November:
24.2 days - Average sunshine days in December:
24.5 days
The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is June (20.8 days).
Average UV index
Signal Hill, CA
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover
Signal Hill, CA
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility
Signal Hill, 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).
