USGS · 01645745

LITTLE DIFFICULT RUN

USGS · 01645745LIVE

LITTLE DIFFICULT RUN NEAR VIENNA, VA

RESTON, VA38.9099°N, -77.3377°W

AIR TEMP

96°F

WIND

3mph WNW

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

100°

77°

FRI

105°

78°

SAT

101°

72°

SUN

92°

71°

MON

86°

70°

TUE

90°

67°

WED

87°

70°

TIME

THU

NOW

FRI

SAT

SUN

MON

TUE

TEMP

hourly forecast

100°

mild

100°

99°

95°

90°

88°

86°

85°

83°

81°

80°

79°

78°

81°

86°

90°

94°

97°

99°

101°

102°

104°

105°

104°

103°

99°

95°

92°

89°

87°

85°

83°

81°

80°

79°

80°

84°

87°

91°

94°

96°

98°

100°

101°

100°

73°

72°

73°

74°

73°

72°

73°

72°

71°

73°

74°

78°

81°

83°

86°

89°

91°

92°

89°

85°

77°

72°

73°

72°

71°

70°

71°

72°

73°

75°

76°

75°

78°

84°

86°

84°

78°

75°

74°

73°

70°

69°

68°

67°

68°

69°

71°

74°

79°

82°

86°

WIND

mph · gust · dir

6mph WSW

G 9 mph

WSW

G10

SSW

G10

G12

SSW

G10

WNW

G11

WNW

G10

WNW

G11

G10

G11

WNW

G12

WNW

G11

G15

WSW

G11

G12

WSW

G12

WSW

G15

WSW

G15

WSW

G14

G25

WSW

G10

G12

WNW

G10

WNW

G10

WNW

WSW

G10

WNW

G11

WNW

G11

WNW

G12

G10

G11

G13

G15

NNW

G13

G26

G21

SSW

G17

G12

WSW

G11

WSW

NNE

G12

NNE

G13

G10

ENE

NNE

G13

WNW

NNE

ESE

NNE

ESE

NNE

G12

G13

ESE

G12

ESE

SSE

G10

SSE

G10

SSE

G12

SSE

G11

G20

SSE

G23

G22

SSW

SSE

G10

SSE

SSW

WSW

WNW

PRECIP

chance %

57%

49%

74%

67%

25%

21%

68%

56%

30%

16%

CLOUDS

cover %

clear

96%

100%

39%

19%

12%

96%

100%

30%

55%

59%

76%

83%

100%

79%

53%

91%

70%

74%

10%

100%

19%

18%

100%

95%

100%

20%

100%

96%

47%

60%

95%

100%

83%

60%

39%

23%

PRESSURE

hPa · trend

1002

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Too Hot

Wind

Calm

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:48 AM

SUNSET

08:38 PM

14H 50M OF DAYLIGHT3H 9M REMAINING

MOON PHASE

Waning Gibbous

92% illuminated

Station Location

38.9099, -77.3377

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DATA · USGS · NOAA · NWSUPDATED 2026-07-02 17:29 UTC

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