Climate and monthly weather forecastNewcastle, CA
Climate and monthly weather forecast
Weather in January
January, like December, in Newcastle, California, is a cool winter month, with an average temperature varying between 39.7°F (4.3°C) and 55°F (12.8°C). The beginning of January records an average high-temperature of a still fresh 55°F (12.8°C), almost echoing the conditions of the previous month. Weather in January »Weather in February
The last month of the winter, February, is a moderate month in Newcastle, California, with temperature in the range of an average high of 56.5°F (13.6°C) and an average low of 39.7°F (4.3°C). Newcastle greets February with an average high-temperature of a mild 56.5°F (13.6°C), marking a slight deviation from the preceding month. Weather in February »Weather in March
March, the first month of the spring in Newcastle, is still a mild month, with an average temperature fluctuating between 41.9°F (5.5°C) and 58.8°F (14.9°C). The transition into March shows a subtle variation to a still refreshing 58.8°F (14.9°C) from February's 56.5°F (13.6°C) in the average high-temperature. Weather in March »Weather in April
April is a comfortable spring month in Newcastle, California, with an average temperature varying between 65.8°F (18.8°C) and 45.1°F (7.3°C). Newcastle's April weather indicates a minor ascent in high-temperatures, adjusting from a refreshing 58.8°F (14.9°C) in March to a comfortable 65.8°F (18.8°C). Weather in April »Weather in May
May, the last month of the spring in Newcastle, is a warm month, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 73.8°F (23.2°C). A slight uplift of average high-temperatures is noted in May, with temperatures adjusting from a refreshing 65.8°F (18.8°C) in April to a moderately hot 73.8°F (23.2°C). Weather in May »Weather in June
June, the first month of the summer in Newcastle, is still a warm month, with an average temperature ranging between max 84.6°F (29.2°C) and min 56.7°F (13.7°C). The average high-temperature increases in June, moving from a moderately hot 73.8°F (23.2°C) in May to a still warm 84.6°F (29.2°C). Weather in June »Weather in July
July in Newcastle, California, is a hot summer month, with an average temperature fluctuating between 91.9°F (33.3°C) and 60.6°F (15.9°C). With average high temperatures of 91.9°F (33.3°C) and lows of 60.6°F (15.9°C), July is the warmest month. Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Newcastle, California, with temperature in the range of an average low of 60.3°F (15.7°C) and an average high of 91°F (32.8°C). August's presence records an average high-temperature of a still tropical 91°F (32.8°C), closely mirroring July's climate. Weather in August »Weather in September
September, the first month of the autumn in Newcastle, is also a moderately hot month, with an average temperature fluctuating between 58.1°F (14.5°C) and 85.8°F (29.9°C). September's presence records an average high-temperature of a warm 85.8°F (29.9°C), closely mirroring August's climate. Weather in September »Weather in October
October, the same as September, is a moderately hot autumn month in Newcastle, California, with an average temperature fluctuating between 73.6°F (23.1°C) and 52.3°F (11.3°C). A subtle decrease in the average high-temperature marks October, falling from September's 85.8°F (29.9°C) to a still warm 73.6°F (23.1°C). Weather in October »Weather in November
The last month of the autumn, November, is another comfortable month in Newcastle, California, with an average temperature ranging between max 61.3°F (16.3°C) and min 44.4°F (6.9°C). In November, the average high-temperature decreases from a warm 73.6°F (23.1°C) in October to an enjoyable 61.3°F (16.3°C). Weather in November »Weather in December
The first month of the winter, December, is also a fresh month in Newcastle, California, with an average temperature varying between 39.2°F (4°C) and 53.4°F (11.9°C). December is the coldest month, with the temperature often reaching an average high of 53.4°F (11.9°C) and an average low of 39.2°F (4°C). Weather in December »Updated: Feb 9, 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
Throughout the year, there are 84.8 rainfall days, and 28.86" (733mm) of precipitation is accumulated.
January, April through November are months without snowfall in Newcastle, California.
In Newcastle, California, during the entire year, snow aggregates up to 2.09" (53mm).
January and December, with an average of 5.8h of sunshine, are months with the least sunshine.
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Newcastle.
Months with snowfall are February, March and December.
February is the month with the most snowfall. Snow falls for 0.6 days and accumulates 1.18" (30mm) of snow.
With an average relative humidity of 75%, March is the most humid month in Newcastle, California.
The month with the most rainfall is March, when the rain falls for 15.4 days and typically aggregates up to 5.63" (143mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Newcastle, California, 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.
June has the longest days of the year, with an average of 14h and 48min of daylight.
The months with the highest UV index in Newcastle, California, are June and July, with an average maximum UV index of 7.
In Newcastle, July is known for its average highest temperatures, reaching a high of 91.9°F (33.3°C) and a low of 60.6°F (15.9°C).
With an average relative humidity of 38%, July is the least humid month in Newcastle.
The months with the least rainfall are July and August Rain falls for 1 days and accumulates 0.04" (1mm) of rain.
July has the most sunshine of the year in Newcastle, California, with an average of 12.1h of sunshine.
Newcastle's coldest month, December, registers temperatures that range from a high of 53.4°F (11.9°C) to a low of 39.2°F (4°C).
With an average of 9h and 30min of daylight, December has the shortest days of the year.
Average temperature
Newcastle, CA
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (53.4°F).
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is December (39.2°F).
Average pressure
Newcastle, CA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Newcastle, CA
- Average wind speed in January:
5mph - Average wind speed in February:
5.7mph - Average wind speed in March:
5.7mph - Average wind speed in April:
5.4mph - Average wind speed in May:
5.2mph - Average wind speed in June:
4.9mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.3mph - Average wind speed in September:
4.6mph - Average wind speed in October:
4.9mph - Average wind speed in November:
4.7mph - Average wind speed in December:
4.9mph
The windiest months (with the highest average wind speed) are February and March (5.7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity
Newcastle, CA
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (38%).
Average rainfall
Newcastle, CA
- Average rainfall in January:
4.45" - Average rainfall in February:
5.16" - Average rainfall in March:
5.63" - Average rainfall in April:
2.2" - Average rainfall in May:
1.57" - Average rainfall in June:
0.24"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.24" - Average rainfall in October:
1.34" - Average rainfall in November:
3.27" - Average rainfall in December:
4.69"
The wettest month (with the highest rainfall) is March (5.63").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days
Newcastle, CA
- Average rainfall days in January:
10.6 days - Average rainfall days in February:
10.4 days - Average rainfall days in March:
15.4 days - Average rainfall days in April:
10.8 days - Average rainfall days in May:
6.8 days - Average rainfall days in June:
2.3 days
- Average rainfall days in July:
1 days - Average rainfall days in August:
1.1 days - Average rainfall days in September:
2.4 days - Average rainfall days in October:
4.1 days - Average rainfall days in November:
8.4 days - Average rainfall days in December:
11.5 days
The month with the highest number of rainy days is March (15.4 days).
The month with the least rainy days is July (1 days).
Average snowfall
Newcastle, CA
The month with the highest snowfall is February (1.18").
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0").
Average snowfall days
Newcastle, CA
- Average snowfall days in January:
0 days - Average snowfall days in February:
0.6 days - Average snowfall days in March:
0.3 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:
0.3 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Newcastle, CA
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
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 48min - Average sunshine in February:
6h and 0min - Average sunshine in March:
7h and 18min - Average sunshine in April:
9h and 54min - Average sunshine in May:
10h and 54min - Average sunshine in June:
11h and 48min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
12h and 0min - Average sunshine in September:
11h and 12min - Average sunshine in October:
7h and 12min - Average sunshine in November:
6h and 30min - Average sunshine in December:
5h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).
Average sunshine days
Newcastle, CA
- Average sunshine days in January:
19.6 days - Average sunshine days in February:
16.6 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
17.6 days - Average sunshine days in May:
23.2 days - Average sunshine days in June:
26.8 days
- Average sunshine days in July:
29.6 days - Average sunshine days in August:
29.3 days - Average sunshine days in September:
27.3 days - Average sunshine days in October:
26.3 days - Average sunshine days in November:
21.1 days - Average sunshine days in December:
18.7 days
The month with the most sunshine days is July (29.6 days).
The month with the least sunshine days is March (14.6 days).
Average UV index
Newcastle, CA
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
Newcastle, CA
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility
Newcastle, 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).
