Grantham Weather Forecast
- 54
- 68
Rain Showers
- 51
- 67
Rain Showers Likely
- 50
- 69
Chance Thunderstorms
- 50
- 71
Slight Chance Rain Showers
- 55
- 77
Partly Sunny
- 58
- 79
Slight Chance Thunderstorms
Today 8 Jun Sullivan
Partly sunny. Patchy fog this morning. A slight chance of Showers this Morning, then a chance of Showers with a slight chance of Thunderstorms this afternoon. Highs in the upper 60s. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.
Tonight 8 Jun Sullivan
Partly cloudy. A chance of Showers after midnight. Lows in the mid 50s. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.
Grantham Temperature Statistics
June Temperature
Lebanon Municipal Airport (12.4 miles)
Lowest 1 June, 2024
39.7 °FAverage June
68.9 °FHighest 3 June, 2024
90.6 °F
Climate (2019–Present)
Lebanon Municipal Airport (12.4 miles)
Take a look at our website widgetsAvailable free! Find Out MoreAverage Low 2019–2024
38.1 °FAverage 2019–2024
48.4 °FAverage High 2019–2024
59.4 °F