diff --git a/lib/xmet/skew_t.py b/lib/xmet/skew_t.py
index fc4f723..980f5e4 100644
--- a/lib/xmet/skew_t.py
+++ b/lib/xmet/skew_t.py
@@ -13,8 +13,8 @@ PRESSURE_LOG_MAX   = math.log(PRESSURE_MAX)
 PRESSURE_LOG_MIN   = math.log(PRESSURE_MIN)
 PRESSURE_LOG_RANGE = PRESSURE_LOG_MAX - PRESSURE_LOG_MIN
 
-TEMP_MAX        =  60
-TEMP_MIN        = -40
+TEMP_MAX        =  50
+TEMP_MIN        = -50
 TEMP_RANGE      = TEMP_MAX - TEMP_MIN
 TEMP_CENTER     =   0 # degrees C
 TEMP_STEP       =   5