Acton Weather

81°F

Acton, California, USA

Updated: 22-Sep-2021 6:40pm

Navigation

External Links

Style Options

There are no active watches, warnings or advisories for zone CAZ059.

METRIC | IMPERIAL

Updated: 22-Sep-2021 @ 6:40pm

Temperature

Current Conditions

Forecast / Storm Prediction

Currently Outside: 80.9°F Heat Index: 80.6°F ---
High Today 89.9°F 1:30 PM	Low Today 64.1°F 2:49 AM
Yest High 89.7°F 3:38 PM	Yest Low 62.2°F 6:58 AM


	Dry
	Wind: S 8.8 Gusting to: 7.0 mph
	Rain: 0.00 in

This Afternoon Mostly Sunny	Tonight Mostly Clear	Thursday Sunny
Hi ≈90°F	Lo ≈73°F	Hi ≈87°F

Dew Point

Liquid Precipitation

Wind Speed

Sun/Moon

Current:	53.6°F
Last Hour:	0.8°F
High 2:49 PM:	56.1°F
Low 12:15 AM:	40.9°F
Record High:	73.4°F on 12/15/2008
Record Low:	-28.1°F on 2/1/2006
Wetbulb:	65.0°F

Rain Today
Today:	0.00 in
Yesterday:	0.00 in
Last 7 Days:	0.00 in
Sep Rain:	0.02 in
Sep to Date Avg:¹⁰	0.00 in
Sep to Date Diff from Avg:¹⁰	0.02 in
Sep Avg:	0.09 in
Diff from Avg:	0.07 in
Season:¹	0.04 in
YTD Avg:¹¹	0.00 in
YTD Diff from Avg:¹¹	0.04 in
Last Rain Time/Date:	9/10/2021 at 12:30 AM
14 rain days in 2021
1 day in September 11 days since last rain

Current:	S 8.8 mph
1Hr Average:	11.2 mph
Wind Run:	80.75 miles
Wind Gust
Current:	7.0 mph mph
Today:	23.0 mph 3:12 PM
Month:	25.0 mph Sep-11
Year:	40.3 mph Jan-28
Record Gust:	57.0 mph 12/31/2005

Sunlight:

12 hrs 7 min
of Sunlight Today

50.5% 49.5%
Which is
2 min 08 sec Shorter
Than Yesterday

8%
Illuminated

Humidity

Barometer

Current:	39%
Last Hour:	6%
High 1:25 AM:	44%
Low 1:11 PM:	25%
Record High:	100% 3/6/2006
Record Low:	3% 8/16/2016

Current:	29.930 inHg
Last Hour:	Steady
High 5:19 AM:	30.122 in.
Low 6:15 PM:	29.924 in.
Record High:	30.555 inHg 1/6/2020
Record Low:	28.942 inHg 1/21/2010

Cooling Degree Days

Tide

Heat Index

Air

Today:	4.3
Sep:	209.8
2021 to Date:	1423.6
Heating Degree Days
2021 to Date:	1905.9

0 minutes to tide at
04:00 PM PST

Current:	80.6°F
High 2:26pm:	87.7°F
Yesterday:	85.7°F
Record:	103.5°F 9/5/2018

Quality
Index⁶:
34

Good

Density:
1.17 kg/m³

UV Summary/Forecast

Solar Summary

Sep-22

Sep-23

Sep-24

Sunrise is at: 6:41 am

Solar Noon: 12:44

Sunset is at: 6:48 pm

Almanac

Station All Time Records

Cloud Level

Currently:	Evening
YTD Avg Temp:	63.3°F
Sunrise:	6:41 am
Sunset:	6:48 pm
Moonrise:	8:06 pm
Moonset:	9:08 am
Full Moon:	0/September/2021
New Moon:	11:06 UTC 0/October/2021

HIGHS:	LOWS:
106.5°F 6/16/2021	20.5°F 1/31/2006
Daytime Records
105.4°F 7/04/2007	25.5°F 1/13/2007
Nitetime Records
84.9°F 9/06/2020	20.5°F 1/31/2006
ICN:5 \| S3C2:2 \| Ajax 3.xx ISS:Ok \| CON:4.6 \| RCP:99%

¹ Rain season: July 1st to June 30th. ⁶ . ¹⁰ . ¹¹ .

NWS Short Term Weather Forecast

This Afternoon Mostly Sunny	Tonight Mostly Clear	Thursday Sunny	Thursday Night Mostly Clear	Friday Sunny	Friday Night Partly Cloudy	Saturday Mostly Sunny	Saturday Night Partly Cloudy	Sunday Sunny
Hi ≈90°F	Lo ≈73°F	Hi ≈87°F	Lo ≈68°F	Hi ≈86°F	Lo ≈62°F	Hi ≈84°F	Lo ≈62°F	Hi ≈82°F

This Afternoon	Mostly sunny, with a high near 90. West southwest wind around 20 mph, with gusts as high as 30 mph.
Tonight	Mostly clear, with a low around 73. West southwest wind 5 to 20 mph, with gusts as high as 30 mph.
Thursday	Sunny, with a high near 87. Southwest wind 10 to 25 mph, with gusts as high as 35 mph.
Thursday Night	Mostly clear, with a low around 68. South wind 10 to 25 mph, with gusts as high as 35 mph.
Friday	Sunny, with a high near 86. East southeast wind around 10 mph, with gusts as high as 20 mph.
Friday Night	Partly cloudy, with a low around 62.
Saturday	Mostly sunny, with a high near 84.
Saturday Night	Partly cloudy, with a low around 62.
Sunday	Sunny, with a high near 82.
Sunday Night	Mostly clear, with a low around 60.
Monday	Sunny, with a high near 80.

Version 6.94 - 13-Oct-2015 - Script Mods by: BurnsvilleWeatherLIVE.com

Trends as of 22-Sep-2021 at 6:40pm

TIME	TEMP °F	WIND SPEED mph	WIND GUST mph	WIND DIR	HUMIDITY %	PRESSURE inHg	RAIN in
Current	81.0	8.1	13.8	SW	39	29.929	0.00
5 minutes ago	81.6	12.7	17.3	SSW	38	29.930	0.00
10 minutes ago	82.0	11.5	16.1	SW	38	29.925	0.00
15 minutes ago	82.3	8.1	8.1	SSW	37	29.927	0.00
20 minutes ago	82.7	11.5	17.3	SW	37	29.925	0.00
30 minutes ago	83.4	11.5	17.3	SW	36	29.931	0.00
45 minutes ago	84.3	12.7	19.6	SW	34	29.931	0.00
60 minutes ago	85.2	9.2	13.8	SW	33	29.932	0.00
75 minutes ago	85.9	6.9	11.5	SW	32	29.933	0.00
90 minutes ago	86.1	9.2	13.8	SSW	32	29.937	0.00
105 minutes ago	86.5	11.5	11.5	SSW	33	29.944	0.00
120 minutes ago	87.4	10.4	16.1	SSW	32	29.945	0.00

Records and Stats

RAIN		RAIN HISTORY
Today	0.00 in (0.00 in last hour)	Today	11 days since last rain on 10-Sep-2021 12:30pm
Yest.	0.00 in	Week	0.00 in over last 7 days.
Month	0.02 in (1 rain day this month)	Month	0.00 in last month.
Year	0.04 in ( 14 rain days this year)	Year	0.00 in total last year at this time.
TEMPERATURE HIGHS		HOT DAYS THIS MONTH
Today	89.9 °F at 1:30pm	Max > 86 °F	14 days
Yest.	89.7 °F at 3:38pm	Max > 77 °F	21 days
Month	100.0 °F on 06-Sep-2021	Warmest day	91.9 °F on 06-Sep-2021
Year	106.5 °F on 16-Jun-2021	Warmest night	79.7 °F on 09-Sep-2021
TEMPERATURE LOWS		COLD DAYS THIS MONTH
Today	64.1 °F at 2:49am	Min < 32 °F	0 days
Yest.	62.2 °F at 6:58am	Min < 5 °F	0 days
Month	53.2 °F on 18-Sep-2021	Coldest day	65.8 °F on 01-Sep-2021
Year	25.0 °F on 26-Jan-2021	Coldest night	57.6 °F on 02-Sep-2021
BAROMETER HIGHS		WIND CHILL LOWS
Today	30.122 inHg at 5:19am	Today	64.1 °F at 2:49am
Yest.	30.146 inHg at 9:59am	Yest.	62.2 °F at 6:58am
Month	30.146 inHg on 21-Sep-2021	Month	53.2 °F on 18-Sep-2021
Year	30.513 inHg on 21-Feb-2021	Year	20.8 °F on 25-Jan-2021

Wind Data

CURRENT
Now	8.8 mph S
Gust	7.0 mph S
Gust/hr	20 mph
WIND GUST HIGHS
Today	23.0 mph SW at 3:12pm
Yest.	20 mph at 12:26pm
Month	25.0 mph on 11-Sep-2021
Year	40.3 mph on 28-Jan-2021
WIND GUST AVERAGE HIGHS
Today	15.5 mph SSW at 2:31pm
Yest.	14 mph at 1:07pm
Month	20.0 mph on 01-Sep-2021
Year	28.4 mph on 19-Jan-2021
WIND RUN
Today	80.75 miles
Month	2579.85 miles
Year	36021.16 miles