The closing price for Bitcoin (BTC) in September 2017 was $4,338.71, on September 30, 2017. It was down 7.7% for the month.

bitcoin price september 2017 cst
DATE OPEN HIGH LOW CLOSE VOLUME
September 30 2017 $4,166.11 $4,358.43 $4,160.86 $4,338.71 1,207,450,000
September 29 2017 $4,171.62 $4,214.63 $4,039.29 $4,163.07 1,367,050,000
September 28 2017 $4,197.13 $4,279.31 $4,109.70 $4,174.73 1,712,320,000
September 27 2017 $3,892.94 $4,210.05 $3,884.82 $4,200.67 1,686,880,000
September 26 2017 $3,928.41 $3,969.89 $3,869.90 $3,892.35 1,043,740,000
September 25 2017 $3,681.58 $3,950.25 $3,681.58 $3,926.07 1,374,210,000
September 24 2017 $3,796.15 $3,796.15 $3,666.90 $3,682.84 768,015,000
September 23 2017 $3,629.92 $3,819.21 $3,594.58 $3,792.40 928,114,000
September 22 2017 $3,628.02 $3,758.27 $3,553.53 $3,630.70 1,194,830,000
September 21 2017 $3,901.47 $3,916.42 $3,613.63 $3,631.04 1,411,480,000
September 20 2017 $3,916.36 $4,031.39 $3,857.73 $3,905.95 1,213,830,000
September 19 2017 $4,073.79 $4,094.07 $3,868.87 $3,924.97 1,563,980,000
September 18 2017 $3,591.09 $4,079.23 $3,591.09 $4,065.20 1,943,210,000
September 17 2017 $3,606.28 $3,664.81 $3,445.64 $3,582.88 1,239,150,000
September 16 2017 $3,637.75 $3,808.84 $3,487.79 $3,625.04 1,818,400,000
September 15 2017 $3,166.30 $3,733.45 $2,946.62 $3,637.52 4,148,070,000
September 14 2017 $3,875.37 $3,920.60 $3,153.86 $3,154.95 2,716,310,000
September 13 2017 $4,131.98 $4,131.98 $3,789.92 $3,882.59 2,219,410,000
September 12 2017 $4,168.88 $4,344.65 $4,085.22 $4,130.81 1,864,530,000
September 11 2017 $4,122.47 $4,261.67 $4,099.40 $4,161.27 1,557,330,000
September 10 2017 $4,229.34 $4,245.44 $3,951.04 $4,122.94 1,679,090,000
September 09 2017 $4,229.81 $4,308.82 $4,114.11 $4,226.06 1,386,230,000
September 08 2017 $4,605.16 $4,661.00 $4,075.18 $4,228.75 2,700,890,000
September 07 2017 $4,589.14 $4,655.04 $4,491.33 $4,599.88 1,844,620,000
September 06 2017 $4,376.59 $4,617.25 $4,376.59 $4,597.12 2,172,100,000
Daily pricing data for Bitcoin dates back to 7/17/2010, and may be incomplete.

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