USGS · 01645844

OLD COURTHOUSE SPRING BRANCH

USGS · 01645844LIVE

OLD COURTHOUSE SPRING BRANCH NEAR VIENNA, VA

RESTON, VA38.9390°N, -77.2576°W

AIR TEMP

83°F

WIND

3mph W

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

102°

77°

SUN

96°

70°

MON

88°

71°

TUE

86°

71°

WED

86°

66°

THU

96°

71°

FRI

86°

74°

TIME

SAT

NOW

SUN

MON

TUE

WED

THU

TEMP

hourly forecast

82°

mild

82°

85°

88°

92°

95°

97°

99°

101°

102°

91°

88°

81°

78°

77°

76°

75°

74°

75°

78°

80°

83°

85°

88°

90°

93°

95°

96°

95°

93°

77°

72°

70°

71°

72°

71°

72°

73°

75°

78°

81°

84°

87°

88°

86°

77°

76°

74°

72°

71°

72°

73°

74°

79°

82°

85°

86°

79°

78°

79°

80°

79°

77°

75°

73°

72°

71°

72°

71°

69°

67°

66°

67°

70°

73°

75°

78°

80°

83°

85°

86°

85°

84°

80°

78°

77°

75°

74°

73°

WIND

mph · gust · dir

4mph NW

G 11 mph

G11

NNW

WNW

G10

WSW

G13

WSW

G16

WSW

G14

WSW

G13

SSW

SSE

G17

G18

SSE

NNW

G13

SSE

WSW

G10

WNW

G13

G11

NNE

G11

SSE

G11

SSE

ENE

NNE

ENE

G15

G26

NNW

G24

ENE

G10

G12

G20

ESE

G19

ENE

NNW

WNW

WSW

NNW

G12

NNE

ENE

G10

G13

SSW

G12

SSW

WNW

NNW

G12

G13

NNW

G15

NNW

G14

NNW

G15

NNW

G15

G17

NNW

G21

NNW

G21

NNW

G22

NNW

G18

NNW

G13

NNW

G16

NNW

G13

NNW

G11

NNW

G14

NNW

G18

NNW

G16

G14

G13

NNW

G13

NNW

G13

NNW

G14

NNW

G13

NNW

G11

NNW

G11

G10

NNW

ESE

SSE

G12

G15

G18

SSW

PRECIP

chance %

14%

22%

21%

17%

28%

16%

19%

20%

18%

16%

14%

68%

64%

44%

46%

73%

75%

30%

17%

48%

34%

15%

11%

19%

26%

CLOUDS

cover %

clear

27%

100%

70%

100%

79%

28%

70%

85%

13%

32%

100%

31%

98%

73%

100%

99%

100%

84%

25%

100%

76%

100%

96%

100%

92%

100%

56%

17%

55%

100%

91%

100%

83%

10%

14%

17%

30%

82%

100%

PRESSURE

hPa · trend

1004

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 DAYLIGHT13H 42M REMAINING

MOON PHASE

Waning Gibbous

81% illuminated

Station Location

38.9390, -77.2576

Loading map…

DATA · USGS · NOAA · NWSUPDATED 2026-07-04 06:55 UTC

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