diff --git a/pvlib/iotools/acis.py b/pvlib/iotools/acis.py
index 9e8cea0104..3be16cfa4c 100644
--- a/pvlib/iotools/acis.py
+++ b/pvlib/iotools/acis.py
@@ -400,8 +400,8 @@ def get_acis_station_data(station, start, end, trace_val=0.001,
         {"name": "avgt", "interval": "dly", "units": "degreeC"},
         {"name": "obst", "interval": "dly", "units": "degreeC"},
         {"name": "pcpn", "interval": "dly", "units": "mm"},
-        {"name": "snow", "interval": "dly", "units": "mm"},
-        {"name": "snwd", "interval": "dly", "units": "mm"},
+        {"name": "snow", "interval": "dly", "units": "cm"},
+        {"name": "snwd", "interval": "dly", "units": "cm"},
         {"name": "cdd", "interval": "dly", "units": "degreeC"},
         {"name": "hdd", "interval": "dly", "units": "degreeC"},
         {"name": "gdd", "interval": "dly", "units": "degreeC"},
diff --git a/pvlib/tests/iotools/test_acis.py b/pvlib/tests/iotools/test_acis.py
index 7b62cdf145..8458e9b930 100644
--- a/pvlib/tests/iotools/test_acis.py
+++ b/pvlib/tests/iotools/test_acis.py
@@ -108,8 +108,8 @@ def test_get_acis_station_data():
                                      trace_val=-99)
     expected = pd.DataFrame(
         [[10., 2., 6., np.nan, 21.34, 0., 0., 0., 59., 0.],
-         [3., -4., -0.5, np.nan, 9.4, 53.3, 0., 0., 65., 0.],
-         [-1., -5., -3., np.nan, -99, -99, 51., 0., 68., 0.]],
+         [3., -4., -0.5, np.nan, 9.4, 5.3, 0., 0., 65., 0.],
+         [-1., -5., -3., np.nan, -99, -99, 5., 0., 68., 0.]],
         columns=['temp_air_max', 'temp_air_min', 'temp_air_average',
                  'temp_air_observation', 'precipitation', 'snowfall',
                  'snowdepth', 'cooling_degree_days',