Cryptic crossword No 3,308

Across

1. Teaching temperature and precipitation at home, good! (8)
2. Music coming from your arse? (8)
3. Picnic appears in Wasp Reader's Digest (6)
4. Ecstatic from experimental micro gas (8)
5. Starts to involve assault lawyer after bit back of leg bone (6)
6. German is hugged by sibling in small restaurant (6)
7. Pure muscle, very large, pick up truck! (8)
8. Mystic returns around America for exploits again (6)
9. In the middle of spiritualist ceremony (6)
10. Vermin is terrorising some member of the clergy (8)
11. Darkness: time for new hope, hard going, legislation backed king and queen once - right, put in someone who can bring balance! (9,6)
12. Having a dangerous bite - very, very large, run away! (8)
13. Take ecstasy: from insane heights to lower parts? (6)

Down

1. Under control at home by script (2,4)
2. Sit on bum hopelessly, give in (6)
3. Torn to pieces - Worf's up and around close to the action! (5,3)
4. Frantically eat gruel to control emotions (8)
5. Sexy hero ticklish, somewhat (6)
6. I pay port pervert as arranged for personal stuff? (7,8)
7. Significant birthday gift - force for good that is thoughtful, 80% off! (8)
8. Add fuel to fire right inside and gently touch (6)
9. Intensify ruby ring with ornate blue (8)
10. Bisexual in outdoor pool reveals horniness (6)
11. At the bar, heard to use tongue but not on 4d (2,6)
12. Dessert is just tea in grand gold container! (6)
13. Bless, Ian is aroused for women loving women (8)