Yes, you can test Snowflake on Devnet at https://devnet.snowflake.so
However, note that Devnet doesn't have the same data as Mainnet so please follow a few tips below.
If you test recurring payments, use USDC (Snowflake) , WSOL or STEP tokens. Many other tokens aren't valid mint in Devnet.
You can get airdrop of USDC (Snowflake Devnet) via Settings > Your Wallet > Airdrop USDC
Contracts like Orca & Saber support a very small number of assets/pools on Devnet and you might need to obtain Devnet versions of these tokens in order to test the integrations.
If you want to test automations without having to obtain Devnet tokens, you can try the Sample time triggered automation or Sample program triggered automation.
Price trigger automations using Pyth oracle should have similar price to Mainnet.