diff --git a/src/temp.c b/src/temp.c
index addc8ba..8eb2ae4 100644
--- a/src/temp.c
+++ b/src/temp.c
@@ -18,9 +18,18 @@
 #define COLD_THRESHOLD 4.0 /* °C */
 
 static ssize_t format_text(hexagram_text *text, char *buf, size_t len) {
+    const char *formats[2] = {
+        "%.1f°C",
+        "%.1f°F"
+    };
+
     hexagram_temp *temp = (hexagram_temp *)text;
 
-    return snprintf(buf, len, "%.1f°C", temp->value);
+    double value = temp->units == HEXAGRAM_TEMP_CELSIUS?
+        temp->value:
+        temp->value * (9.0 / 5.0) + 32;
+
+    return snprintf(buf, len, formats[temp->units], value);
 }
 
 static int draw_fg(hexagram_gauge *gauge, cairo_t *cr) {