v3.25.1
Cover - shares
 3 Months Ended
Mar. 31, 2025
May 15, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Mar. 31, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Entity Information [Line Items]    
Entity Registrant Name RAIN ENHANCEMENT TECHNOLOGIES HOLDCO, INC.  
Entity Central Index Key 0002028293  
Entity File Number 001-42460  
Entity Tax Identification Number 99-3527155  
Entity Incorporation, State or Country Code MA  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Contact Personnel [Line Items]    
Entity Address, Address Line One 4851 Tamiami Trail N  
Entity Address, Address Line Two Suite 200  
Entity Address, City or Town Naples  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 34103  
Entity Phone Fax Numbers [Line Items]    
City Area Code 339  
Local Phone Number 222-6714  
Class A common stock, par value $0.0001 per share    
Entity Listings [Line Items]    
Title of 12(b) Security Class A common stock, par value $0.0001 per share  
Trading Symbol RAIN  
Security Exchange Name NASDAQ  
Redeemable warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50    
Entity Listings [Line Items]    
Title of 12(b) Security Redeemable warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50  
Trading Symbol RAINW  
Security Exchange Name NASDAQ  
Class A Common Stock    
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   7,528,761
Class B Common Stock    
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   57,752