I-89 weather conditions near Grantham, New Hampshire
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Fair 70°F 2025-06-18T21:53:00-04:00 
Tonight 2025-06-18, Patchy Fog. Patchy fog. Otherwise, mostly cloudy, with a low around 67. Calm wind.Juneteenth 2025-06-19, Severe Thunderstorms and Areas Fog. Showers likely and possibly a thunderstorm, mainly after 2pm. Some of the storms could be severe. Areas of fog before 10am. Otherwise, partly sunny, with a high near 85. Light south wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night 2025-06-19, Severe Thunderstorms then Chance Showers. Showers and thunderstorms likely before 11pm, then a chance of showers. Some of the storms could be severe. Mostly cloudy, with a low around 61. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday 2025-06-20, Mostly Sunny. Mostly sunny, with a high near 76. West wind 10 to 15 mph, with gusts as high as 30 mph.
Friday Night 2025-06-20, Mostly Clear. Mostly clear, with a low around 58. West wind around 5 mph becoming calm after midnight.- Saturday 2025-06-21, Mostly Sunny. Mostly sunny, with a high near 81.
Saturday Night 2025-06-21, Showers Likely. Showers likely, mainly after 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.Sunday 2025-06-22, Showers Likely then Mostly Sunny. Showers likely before 8am. Partly sunny, with a high near 85. Chance of precipitation is 60%.
- Sunday Night 2025-06-22, Partly Cloudy. Partly cloudy, with a low around 67.
Monday 2025-06-23, Hot. Mostly sunny and hot, with a high near 91.- Monday Night 2025-06-23, Partly Cloudy. Partly cloudy, with a low around 71.
- Tuesday 2025-06-24, Hot. Sunny and hot, with a high near 93.
- Tuesday Night 2025-06-24, Partly Cloudy. Partly cloudy, with a low around 70.
Wednesday 2025-06-25, Mostly Sunny then Chance Showers. A 40 percent chance of showers. Mostly sunny, with a high near 86.