USGS · 06200000

BOULDER RIVER

USGS · 06200000LIVE

Boulder River at Big Timber MT

SWEET GRASS COUNTY, MT45.8338°N, -109.9387°W Updated 15 hr ago

FLOW RATE

607cfs

GAUGE HT

2.43ft

AIR TEMP

79°F

WIND

2mph ESE

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 7 DAY

607cfs 40.5% vs avg

Optimal band: 713–965 cfs

PERIOD HIGH

878cfs

PERIOD LOW

607cfs

RUNNABLE

75%

last 7 day in band

Gauge Height

2.43ft

Precipitation History

Your History · Boulder River at Big Timber MT

Track your history

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Weather Conditions

WEATHER CONDITIONS

TODAY

107°

58°

MON

97°

67°

TUE

95°

66°

WED

95°

64°

THU

94°

66°

FRI

95°

66°

SAT

98°

67°

TIME

SUN

NOW

MON

TUE

WED

THU

FRI

TEMP

hourly forecast

107°

mild

107°

105°

104°

98°

92°

86°

81°

78°

76°

74°

72°

70°

68°

67°

69°

75°

81°

85°

88°

90°

92°

94°

96°

97°

96°

95°

93°

87°

83°

80°

78°

76°

74°

72°

68°

66°

71°

75°

79°

83°

86°

89°

91°

93°

94°

95°

94°

92°

84°

78°

75°

72°

69°

68°

65°

64°

68°

70°

73°

77°

81°

84°

88°

90°

93°

95°

86°

67°

70°

69°

70°

67°

68°

69°

68°

67°

66°

68°

70°

73°

77°

80°

83°

86°

89°

91°

94°

75°

77°

72°

68°

69°

70°

69°

68°

67°

66°

69°

73°

WIND

mph · gust · dir

21mph SSW

G 27 mph

G27

SSW

G26

G27

WSW

G25

G21

SSW

G13

SSE

G28

WSW

NNW

NNE

G12

G14

ESE

G14

ESE

G15

ESE

G15

G17

G15

ESE

G16

G14

ESE

G12

ENE

G13

NNE

G13

NNE

G13

G15

G21

NNE

G21

NNE

G15

WSW

SSW

ENE

G12

ENE

G15

ENE

G18

ENE

G15

ENE

G25

G17

NNE

G10

NNE

ENE

ESE

SSW

ENE

ESE

ENE

G17

WNW

NNW

G10

WSW

ESE

NNW

WSW

ESE

G11

SSE

G32

SSE

G16

NNE

G24

ENE

G11

WSW

G11

WSW

G12

WSW

G11

G10

G11

WSW

G16

WSW

PRECIP

chance %

13%

21%

65%

61%

41%

47%

CLOUDS

cover %

clear

87%

100%

60%

10%

65%

48%

92%

100%

38%

12%

67%

50%

20%

18%

17%

49%

10%

11%

23%

100%

30%

11%

100%

16%

100%

84%

51%

90%

100%

37%

67%

59%

16%

15%

14%

100%

95%

100%

71%

58%

24%

43%

39%

100%

93%

83%

78%

81%

88%

92%

89%

82%

PRESSURE

hPa · trend

877

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Warm

Wind

Calm

Pressure

Rising — Slow

Moon Phase

Average

DAYLIGHT

SUNRISE

05:42 AM

SUNSET

09:08 PM

15H 26M OF DAYLIGHT

MOON PHASE

Waning Crescent

5% illuminated

Station Location

45.8338, -109.9387

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DATA · USGS · NOAA · NWSUPDATED 2026-07-12 00:00 UTC

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