USGS · 01645844

OLD COURTHOUSE SPRING BRANCH

USGS · 01645844LIVE

OLD COURTHOUSE SPRING BRANCH NEAR VIENNA, VA

RESTON, VA38.9390°N, -77.2576°W

AIR TEMP

84°F

WIND

4mph SW

FISH INDEX

63SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

—cfs

No flow data available

Precipitation History

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Weather Conditions

WEATHER CONDITIONS

TODAY

103°

77°

SUN

96°

71°

MON

82°

69°

TUE

91°

70°

WED

81°

65°

THU

74°

70°

FRI

90°

69°

TIME

SAT

NOW

SUN

MON

TUE

WED

THU

TEMP

hourly forecast

80°

mild

80°

82°

85°

89°

92°

95°

98°

100°

101°

102°

103°

102°

82°

81°

78°

77°

76°

75°

74°

75°

78°

80°

83°

85°

88°

90°

93°

95°

96°

95°

77°

72°

71°

70°

69°

70°

71°

72°

74°

72°

73°

74°

80°

81°

82°

81°

78°

76°

75°

73°

72°

71°

70°

71°

74°

77°

81°

85°

87°

89°

90°

91°

90°

88°

81°

77°

75°

74°

73°

72°

71°

70°

69°

67°

66°

65°

67°

69°

72°

75°

78°

79°

81°

80°

79°

78°

77°

76°

75°

74°

WIND

mph · gust · dir

4mph NW

G 11 mph

G11

G10

G11

G13

WNW

G12

WNW

G12

G17

WSW

G17

G14

G18

WNW

G18

SSE

NNW

G13

SSE

WSW

G10

WNW

G13

G11

NNE

G11

SSE

G11

SSE

ENE

NNE

ENE

G15

G26

NNW

G24

G10

G12

SSE

ESE

G20

G19

SSE

SSW

WSW

NNW

WNW

WSW

SSE

SSW

WSW

ESE

G12

SSE

G10

G13

G12

WSW

SSW

G12

G13

G15

G14

G15

NNE

G15

NNE

G17

G21

ENE

G21

ENE

G22

ENE

G18

ENE

G13

ENE

G16

ENE

G13

G11

G14

G18

NNE

G16

NNE

G14

NNE

G13

G14

ENE

G13

ENE

G11

G10

SSE

G12

SSE

G15

SSE

PRECIP

chance %

11%

16%

24%

18%

16%

29%

16%

23%

24%

22%

16%

15%

68%

64%

44%

46%

73%

75%

30%

17%

48%

34%

15%

11%

19%

26%

CLOUDS

cover %

clear

89%

23%

100%

70%

100%

79%

28%

70%

85%

13%

32%

100%

31%

98%

100%

26%

34%

100%

43%

68%

22%

99%

37%

45%

47%

43%

36%

20%

11%

63%

100%

31%

100%

98%

10%

100%

23%

51%

72%

80%

77%

68%

PRESSURE

hPa · trend

1002

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Too Hot

Wind

Calm

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:49 AM

SUNSET

08:37 PM

14H 48M OF DAYLIGHT14H 52M REMAINING

MOON PHASE

Waning Gibbous

81% illuminated

Station Location

38.9390, -77.2576

Loading map…

DATA · USGS · NOAA · NWSUPDATED 2026-07-04 05:45 UTC

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