Good question. And the answer is ... Of course God is responsible! Hear the Word of the Lord Himself:
Deut. 32:39 See now that I, I am He, and there is no god besides Me; it is I who puts to death and gives life. I have wounded, and it is I who heals; and there is no one who can deliver from My hand.
God controls all aspects of the weather:
Ps. 148:8 Fire and hail, snow and clouds; stormy wind, fulfilling His word.
God is sovereign over life and death. Even the infirmities in men are by the sovereign rule and decree of God:
Ex. 4:11 And the Lord said to him [Moses], "Who has made man's mouth? Or who makes him dumb or deaf, or seeing or blind? Is it not I, the Lord?"
1 Sam. 2:6-7 The Lord kills and makes alive; He brings down to Sheol and raises up. The Lord makes poor and rich; He brings low, He also exalts.
Ps. 115:3 But our God is in the heavens; He does whatever He pleases.
Even the crucifixion of Christ was under God's sovereignty:
118:22 The stone which the builders rejected [referring to Christ's crucifixion] has become the chief corner stone. This is the Lord’s doing; it is marvelous in our eyes.
Nothing happens unless God ordains it:
127:1 Unless the Lord builds the house, they labor in vain who build it. Unless the Lord guards the city, the watchman keeps awake in vain.
And again, just in case anyone was wondering:
Ps. 135:6 Whatever the Lord pleases, He does, in heaven and in earth, in seas and in all deeps.
God has also sovereignly ordained those who shall be saved, and those who shall inherit damnation:
Pr. 16:4 The Lord has made everything for its own purpose, even the wicked for the day of evil.
The free acts of men are all under God's sovereign rule:
Pr. 16:9 The mind of man plans his way, but the Lord directs his steps.
Seeming "lucky" happenings are all by God's absolute sovereign rule:
Pr. 16:33 The lot is cast into the lap, but its every decision is from the Lord.
Whatever plans are made by men, it is by God's sovereignty that any of them take place, or are thwarted:
Pr. 19:21 Many are the plans in a man's heart, but the counsel of the Lord will be established.
God controls even the free acts of men, including great and small:
Pr. 21:1 The king's heart is like channels of water in the hand of the Lord; He turns it wherever He wishes.
These are only the tip of the iceberg. I've tons and tons more, but this should be sufficient for any honest inquirer.