Rio Grande City, Texas
  ID: USC00417622  Latitude:  26.3769  Longitude:  -98.8117
  Elevation: 171.9 feet (  52.4 meters)
  Source: NOAA Climate Normals 1991-2020
  
  
      
  
  
   
  
      
  
  
    Precipitation Total: 22.47 in., 8.85 cm.
   
  
      
  
  
   
  
      
  Monthly Data Table for Rio Grande City, Texas
  Monthly Data from NOAA Monthly Normals 2006-2020
  
  
    Imperial Units
    
      | Statistic | 
      Units | 
          Jan | 
    Feb | 
    Mar | 
    Apr | 
    May | 
    Jun | 
    Jul | 
    Aug | 
    Sep | 
    Oct | 
    Nov | 
    Dec | 
    
          
      | Maximum Temperature | 
      °F | 
    70.8 | 
    77.0 | 
    83.0 | 
    89.5 | 
    93.9 | 
    98.2 | 
    98.6 | 
    99.4 | 
    94.4 | 
    89.1 | 
    80.2 | 
    72.4 | 
    
          
      | Minimum Temperature | 
      °F | 
    44.5 | 
    49.2 | 
    57.3 | 
    62.9 | 
    70.0 | 
    74.6 | 
    75.3 | 
    75.5 | 
    71.5 | 
    63.8 | 
    54.4 | 
    46.9 | 
    
      
      
          
      | Heating Degree Days | 
      °F | 
    261.7 | 
    141.4 | 
    53.3 | 
    7.0 | 
    0.2 | 
    0.0 | 
    0.0 | 
    0.0 | 
    0.1 | 
    5.3 | 
    78.4 | 
    220.2 | 
    
          
      | Cooling Degree Days | 
      °F | 
    34.2 | 
    88.2 | 
    212.9 | 
    343.0 | 
    525.7 | 
    641.7 | 
    680.6 | 
    695.6 | 
    538.6 | 
    360.0 | 
    147.5 | 
    54.5 | 
    
          
      | Precipitation | 
      I | 
    1.0 | 
    0.8 | 
    1.4 | 
    1.4 | 
    3.5 | 
    2.8 | 
    3.2 | 
    2.5 | 
    5.4 | 
    1.8 | 
    1.6 | 
    1.4 | 
    
  
   
  
  
  
  
    Metric Units
    
      | Statistic | 
      Units | 
          Jan | 
    Feb | 
    Mar | 
    Apr | 
    May | 
    Jun | 
    Jul | 
    Aug | 
    Sep | 
    Oct | 
    Nov | 
    Dec | 
    
          
      | Maximum Temperature | 
      °C | 
    21.6 | 
    25.0 | 
    28.3 | 
    31.9 | 
    34.4 | 
    36.8 | 
    37.0 | 
    37.4 | 
    34.7 | 
    31.7 | 
    26.8 | 
    22.4 | 
    
          
      | Minimum Temperature | 
      °C | 
    6.9 | 
    9.6 | 
    14.1 | 
    17.2 | 
    21.1 | 
    23.7 | 
    24.1 | 
    24.2 | 
    21.9 | 
    17.7 | 
    12.4 | 
    8.3 | 
    
      
      
          
      | Heating Degree Days | 
      °C | 
    127.6 | 
    60.8 | 
    11.8 | 
    -13.9 | 
    -17.7 | 
    -17.8 | 
    -17.8 | 
    -17.8 | 
    -17.7 | 
    -14.8 | 
    25.8 | 
    104.6 | 
    
          
      | Cooling Degree Days | 
      °C | 
    1.2 | 
    31.2 | 
    100.5 | 
    172.8 | 
    274.3 | 
    338.7 | 
    360.3 | 
    368.7 | 
    281.4 | 
    182.2 | 
    64.2 | 
    12.5 | 
    
          
      | Precipitation | 
      M | 
    2.5 | 
    2.0 | 
    3.5 | 
    3.5 | 
    8.8 | 
    7.2 | 
    8.0 | 
    6.5 | 
    13.6 | 
    4.6 | 
    4.0 | 
    3.6 |