History for Charleston, SC

Monday, August 20, 2012 — View Current Conditions

Monday, August 20, 2012

	Actual	Average	Record
Temperature
Mean Temperature	81 °F	81 °F
Max Temperature	88 °F	89 °F	97 °F (1954)
Min Temperature	74 °F	72 °F	63 °F (1943)
Degree Days
Heating Degree Days	0	0
Month to date heating degree days	0	0
Since 1 June heating degree days	0	1
Since 1 July heating degree days	0	0
Cooling Degree Days	16	16
Month to date cooling degree days	335	329
Year to date cooling degree days	1826	1641
Since 1 June cooling degree days	1261	1279
Growing Degree Days	30 (Base 50)
Moisture
Dew Point	72 °F
Average Humidity	75
Maximum Humidity	94
Minimum Humidity	55
Precipitation
Precipitation	0.01 in	0.24 in	3.91 in (1940)
Month to date precipitation	3.83	4.40
Year to date precipitation	31.20	32.89
Sea Level Pressure
Sea Level Pressure	29.91 in
Wind
Wind Speed	7 mph (WSW)
Max Wind Speed	15 mph
Max Gust Speed	18 mph
Visibility	10 miles
Events	Rain

T = Trace of Precipitation, MM = Missing Value

Source: NWS Daily Summary

Certify This Report

History Location

Trip Planner

Search our historical database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it will be!

Radar Archive

View Animated Radar Loop

This image may take a moment to generate.

Local Photos

There were no photos found matching this date and location.

Visit WunderPhotos

Astronomy

May. 21, 2013	Rise	Set
Actual Time	6:47 AM EDT	7:59 PM EDT
Civil Twilight	6:21 AM EDT	8:24 PM EDT
Nautical Twilight	5:50 AM EDT	8:55 PM EDT
Astronomical Twilight	5:18 AM EDT	9:27 PM EDT
Moon	9:52 AM EDT (8/20)	9:38 PM EDT (8/20)
Length Of Visible Light	14h 03m
Length of Day	13h 12m

Waxing Crescent, 11% of the Moon is Illuminated
Aug 20 Waxing Crescent	Aug 24 First Quarter	Aug 31 Full	Sep 8 Last Quarter	Sep 15 New

Visit Astronomy

Hourly Observations

Time (EDT)	Temp.	Heat Index	Dew Point	Humidity	Pressure	Visibility	Wind Dir	Wind Speed	Gust Speed	Precip	Events	Conditions
12:56 AM	75.9 °F	-	73.9 °F	94%	29.87 in	10.0 mi	Calm	Calm	-	N/A		Mostly Cloudy
1:56 AM	75.0 °F	-	73.9 °F	96%	29.88 in	10.0 mi	Calm	Calm	-	N/A		Clear
2:56 AM	75.9 °F	-	73.9 °F	94%	29.86 in	10.0 mi	SW	5.8 mph	-	N/A		Partly Cloudy
3:56 AM	75.9 °F	-	73.9 °F	94%	29.86 in	10.0 mi	WSW	8.1 mph	-	N/A		Scattered Clouds
4:56 AM	75.0 °F	-	73.0 °F	94%	29.88 in	10.0 mi	WSW	4.6 mph	-	N/A		Mostly Cloudy
5:56 AM	73.9 °F	-	72.0 °F	93%	29.89 in	10.0 mi	SW	5.8 mph	-	N/A		Mostly Cloudy
6:56 AM	73.9 °F	-	71.1 °F	91%	29.91 in	10.0 mi	WSW	9.2 mph	-	N/A		Mostly Cloudy
7:56 AM	75.0 °F	-	72.0 °F	90%	29.93 in	10.0 mi	WSW	8.1 mph	-	N/A		Mostly Cloudy
8:56 AM	75.0 °F	-	72.0 °F	90%	29.94 in	10.0 mi	West	6.9 mph	-	0.00 in	Rain	Light Rain
9:56 AM	77.0 °F	-	72.0 °F	84%	29.94 in	10.0 mi	West	8.1 mph	-	0.00 in		Mostly Cloudy
10:56 AM	79.0 °F	-	71.1 °F	77%	29.93 in	10.0 mi	WNW	9.2 mph	-	N/A		Mostly Cloudy
11:56 AM	82.0 °F	86.3 °F	71.1 °F	69%	29.92 in	10.0 mi	West	10.4 mph	-	N/A		Mostly Cloudy
12:56 PM	84.0 °F	88.4 °F	70.0 °F	63%	29.90 in	10.0 mi	WNW	9.2 mph	-	N/A		Mostly Cloudy
1:56 PM	84.9 °F	89.4 °F	70.0 °F	61%	29.90 in	10.0 mi	Variable	5.8 mph	-	N/A		Mostly Cloudy
2:56 PM	87.1 °F	91.3 °F	69.1 °F	55%	29.88 in	10.0 mi	West	10.4 mph	-	N/A		Mostly Cloudy
3:56 PM	80.1 °F	83.8 °F	72.0 °F	76%	29.89 in	10.0 mi	West	4.6 mph	-	0.01 in		Mostly Cloudy
4:56 PM	82.0 °F	86.3 °F	71.1 °F	69%	29.90 in	10.0 mi	WSW	8.1 mph	-	0.00 in		Mostly Cloudy
5:56 PM	81.0 °F	84.9 °F	71.1 °F	72%	29.91 in	10.0 mi	SW	9.2 mph	-	N/A		Mostly Cloudy
6:56 PM	80.1 °F	83.8 °F	72.0 °F	76%	29.91 in	10.0 mi	SSW	5.8 mph	-	0.00 in		Mostly Cloudy
7:56 PM	78.1 °F	-	73.0 °F	84%	29.92 in	10.0 mi	South	10.4 mph	-	N/A		Mostly Cloudy
8:56 PM	75.9 °F	-	72.0 °F	87%	29.93 in	10.0 mi	SSW	4.6 mph	-	N/A		Overcast
9:56 PM	75.9 °F	-	72.0 °F	87%	29.94 in	10.0 mi	South	4.6 mph	-	N/A		Mostly Cloudy
10:56 PM	75.9 °F	-	72.0 °F	87%	29.97 in	10.0 mi	SSW	4.6 mph	-	N/A		Overcast
11:56 PM	75.0 °F	-	72.0 °F	90%	29.98 in	10.0 mi	SSW	3.5 mph	-	N/A		Mostly Cloudy
Show full METARS \| METAR FAQ \| Comma Delimited File

Airport: