diff --git a/src/siphon/simplewebservice/wyoming.py b/src/siphon/simplewebservice/wyoming.py
index 639dc8de7..835a9cb0c 100644
--- a/src/siphon/simplewebservice/wyoming.py
+++ b/src/siphon/simplewebservice/wyoming.py
@@ -28,7 +28,7 @@ def __init__(self):
         super().__init__('http://weather.uwyo.edu/cgi-bin/sounding')
 
     @classmethod
-    def request_data(cls, time, site_id, **kwargs):
+    def request_data(cls, time, site_id, recalc=False, **kwargs):
         r"""Retrieve upper air observations from the Wyoming archive.
 
         Parameters
@@ -40,6 +40,11 @@ def request_data(cls, time, site_id, **kwargs):
             The three letter ICAO identifier of the station for which data should be
             downloaded.
 
+        recalc : bool
+            Whether to request the server recalculate the data (i.e. ignore its cache) before
+            returning it. Defaults to False. NOTE: This should be used sparingly because it
+            will increase the load on the service.
+
         kwargs
             Arbitrary keyword arguments to use to initialize source
 
@@ -50,10 +55,10 @@ def request_data(cls, time, site_id, **kwargs):
 
         """
         endpoint = cls()
-        df = endpoint._get_data(time, site_id)
+        df = endpoint._get_data(time, site_id, recalc=recalc)
         return df
 
-    def _get_data(self, time, site_id):
+    def _get_data(self, time, site_id, recalc=False):
         r"""Download and parse upper air observations from an online archive.
 
         Parameters
@@ -65,12 +70,15 @@ def _get_data(self, time, site_id):
             The three letter ICAO identifier of the station for which data should be
             downloaded.
 
+        recalc : bool
+            Returns recalculated data if True. Defaults to False.
+
         Returns
         -------
         `pandas.DataFrame`
 
         """
-        raw_data = self._get_data_raw(time, site_id)
+        raw_data = self._get_data_raw(time, site_id, recalc=recalc)
         soup = BeautifulSoup(raw_data, 'html.parser')
         tabular_data = StringIO(soup.find_all('pre')[0].contents[0])
         col_names = ['pressure', 'height', 'temperature', 'dewpoint', 'direction', 'speed']
@@ -129,7 +137,7 @@ def _get_data(self, time, site_id):
 
         return df
 
-    def _get_data_raw(self, time, site_id):
+    def _get_data_raw(self, time, site_id, recalc=False):
         """Download data from the University of Wyoming's upper air archive.
 
         Parameters
@@ -138,6 +146,8 @@ def _get_data_raw(self, time, site_id):
             Date and time for which data should be downloaded
         site_id : str
             Site id for which data should be downloaded
+        recalc : bool
+            Returns recalculated data if True. Defaults to False.
 
         Returns
         -------
@@ -148,6 +158,8 @@ def _get_data_raw(self, time, site_id):
         path = ('?region=naconf&TYPE=TEXT%3ALIST'
                 f'&YEAR={time:%Y}&MONTH={time:%m}&FROM={time:%d%H}&TO={time:%d%H}'
                 f'&STNM={site_id}')
+        if recalc:
+            path += '&REPLOT=1'
 
         resp = self.get_path(path)
         # See if the return is valid, but has no data