<p>Cropland landscapes exert a significant impact on land surface temperature (LST) in built-up areas and croplands interlaced urban areas. However, quantitative research on the interactions and spatial effects of cropland landscape patterns on LST remains limited, especially in terms of seasonal differences and scale effects. Employing geographic detector and spatial Durbin model (SDM), we investigated the interactions and spatial effects of cropland landscape indices on LST across various seasons and grid scales in the main urban area of Weifang City, which is a typical built-up area and cropland interlaced urban area. The results showed that there was a significant cropland heat island effect in autumn and winter seasons, while LST of cropland was lower in summer. Local LST was affected not only by the interactions among cropland landscape characteristics within the space but also by the impact of cropland landscape patterns from adjacent spaces. The percentage of landscape (PLAND) exerted a strong impact on LST, while patch density (PD), mean shape index (ShapeMN), and Euclidean nearest-neighbor distance (ENN) had relatively weak effects on LST. The impact of cropland landscape patterns on LST exhibited significant scale effects and seasonal variations. As the grid unit scale increased, the influence of cropland landscape patterns on local LST generally strengthened, while their impact on LST of neighboring areas tended to weaken. The effects of cropland landscape patterns on LST were more significant in autumn and winter, compared to relatively weaker effects in spring and summer.</p>