diff --git a/opm/parser/eclipse/EclipseState/Schedule/Action/ActionValue.hpp b/opm/parser/eclipse/EclipseState/Schedule/Action/ActionValue.hpp
index 84170374a..375281e50 100644
--- a/opm/parser/eclipse/EclipseState/Schedule/Action/ActionValue.hpp
+++ b/opm/parser/eclipse/EclipseState/Schedule/Action/ActionValue.hpp
@@ -23,6 +23,7 @@ enum TokenType {
 enum class FuncType {
   none,
   time,
+  time_month,
   region,
   field,
   group,
diff --git a/src/opm/parser/eclipse/EclipseState/Schedule/Action/ASTNode.cpp b/src/opm/parser/eclipse/EclipseState/Schedule/Action/ASTNode.cpp
index 5d3a237cc..b1641899d 100644
--- a/src/opm/parser/eclipse/EclipseState/Schedule/Action/ASTNode.cpp
+++ b/src/opm/parser/eclipse/EclipseState/Schedule/Action/ASTNode.cpp
@@ -18,6 +18,7 @@
 */
 
 #include <fnmatch.h>
+#include <cmath>
 
 #include <opm/parser/eclipse/EclipseState/Schedule/Action/ActionContext.hpp>
 #include <opm/parser/eclipse/EclipseState/Schedule/Action/ActionValue.hpp>
@@ -161,7 +162,26 @@ Action::Result ASTNode::eval(const Action::Context& context) const {
     }
 
     auto v1 = this->children[0].value(context);
-    auto v2 = this->children[1].value(context);
+    Action::Value v2;
+
+    /*
+      Special casing of MONTH comparisons where in addition symbolic month names
+      we can compare with numeric months, in the case of numeric months the
+      numerical value should be rounded before comparison - i.e.
+
+        MNTH = 4.3
+
+      Should evaluate to true for the month April.
+     */
+    if (this->children[0].func_type == FuncType::time_month) {
+        const auto& rhs = this->children[1];
+        if (rhs.type == TokenType::number) {
+            v2 = Action::Value(std::round(rhs.number));
+        } else
+            v2 = rhs.value(context);
+    } else
+        v2 = this->children[1].value(context);
+
     return v1.eval_cmp(this->type, v2);
 }
 
diff --git a/src/opm/parser/eclipse/EclipseState/Schedule/Action/ActionParser.cpp b/src/opm/parser/eclipse/EclipseState/Schedule/Action/ActionParser.cpp
index d16b79c6e..a36f9b696 100644
--- a/src/opm/parser/eclipse/EclipseState/Schedule/Action/ActionParser.cpp
+++ b/src/opm/parser/eclipse/EclipseState/Schedule/Action/ActionParser.cpp
@@ -88,7 +88,7 @@ TokenType Parser::get_type(const std::string& arg) {
 FuncType Parser::get_func(const std::string& arg) {
 
     if (arg == "YEAR") return FuncType::time;
-    if (arg == "MNTH") return FuncType::time;
+    if (arg == "MNTH") return FuncType::time_month;
     if (arg == "DAY")  return FuncType::time;
 
     using Cat = SummaryConfigNode::Category;
diff --git a/tests/parser/ACTIONX.cpp b/tests/parser/ACTIONX.cpp
index b590ae53a..5fdf9c476 100644
--- a/tests/parser/ACTIONX.cpp
+++ b/tests/parser/ACTIONX.cpp
@@ -355,6 +355,19 @@ BOOST_AUTO_TEST_CASE(DATE) {
     BOOST_CHECK( !ast.eval(context));
 }
 
+BOOST_AUTO_TEST_CASE(MNTH_NUMERIC) {
+    Action::AST ast(std::vector<std::string>{"MNTH", ">=", "6.3"});
+    SummaryState st(TimeService::now());
+    WListManager wlm;
+    Action::Context context(st, wlm);
+
+    context.add("MNTH", 5);
+    BOOST_CHECK( !ast.eval(context));
+
+    context.add("MNTH", 6);
+    BOOST_CHECK( ast.eval(context) );
+}
+
 
 BOOST_AUTO_TEST_CASE(MANUAL1) {
     Action::AST ast({"GGPR", "FIELD", ">", "50000", "AND", "WGOR", "PR", ">" ,"GGOR", "FIELD"});